Level 87
12 Rings · 9 Board
Rotate Rings
Rotate Rings Level 89 walkthrough
The game has different level schedules, so the board for the same level number may differ. Choose the thumbnail that matches your game.
Ring numbers
12 rings, 14 blocking pins, 6 slide bars, 6 clamps, 1 timed bomb
123456789101112
Default A · Numbers identify the rings on the diagram; they do not specify an operation order.
Choose a matching board
Filters examine every variant; choose a thumbnail to compare a matching board.
Board · A
12 rings, 14 blocking pins, 6 slide bars, 6 clamps, 1 timed bomb
Ring numbers
123456789101112
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 12 · Blocking pins: 14 · Stop pins: 2 · Slide bars: 6 · Clamps: 6 · Bombs: 1
Ring connections and board notes
The complete route is still being worked out. Only the opening moves below passed the current checks; they do not establish a full solution. Bombs are shown at their saved positions; their effects and timers are not included in this candidate. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
6 slide bars are shown. Match their tracks and connected clamps on the diagram.
6 clamps are shown. Locate each clamp and its linked slide bar before moving either object.
Clear the 1 timed bomb first.
Ring 1 is closed and has no gap. Match its number, position and connections to the board in your game.
Ring 2 is closed and has no gap. Match its number, position and connections to the board in your game.
Ring 3 is open. A pin carried by Ring 7 connects to this ring; the opening in Ring 3 provides a release point for that connection. A pin carried by Ring 1 connects to this ring; the opening in Ring 3 provides a release point for that connection.
Ring 4 is open. A pin carried by Ring 9 connects to this ring; the opening in Ring 4 provides a release point for that connection. A pin carried by Ring 6 connects to this ring; the opening in Ring 4 provides a release point for that connection.
Ring 5 is open. A pin carried by Ring 10 connects to this ring; the opening in Ring 5 provides a release point for that connection.
Ring 6 is closed and has no gap. Match its number, position and connections to the board in your game.
Ring 7 is open. This ring carries a pin connected to Ring 3; the pin moves with its owner ring. This ring carries a pin connected to Ring 11; the pin moves with its owner ring.
Ring 8 is open. A pin carried by Ring 12 connects to this ring; the opening in Ring 8 provides a release point for that connection. A pin carried by Ring 6 connects to this ring; the opening in Ring 8 provides a release point for that connection.
Ring 9 is open. A pin carried by Ring 6 connects to this ring; the opening in Ring 9 provides a release point for that connection. This ring carries a pin connected to Ring 12; the pin moves with its owner ring. This ring carries a pin connected to Ring 4; the pin moves with its owner ring.
Ring 10 is open. A pin carried by Ring 11 connects to this ring; the opening in Ring 10 provides a release point for that connection. This ring carries a pin connected to Ring 5; the pin moves with its owner ring.
Ring 11 is open. A pin carried by Ring 7 connects to this ring; the opening in Ring 11 provides a release point for that connection. This ring carries a pin connected to Ring 10; the pin moves with its owner ring.
Ring 12 is open. A pin carried by Ring 9 connects to this ring; the opening in Ring 12 provides a release point for that connection. This ring carries a pin connected to Ring 8; the pin moves with its owner ring.
Rings fly away automatically once their connections and constraints are released. The diagram numbers identify rings; they are not an operation sequence.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Stop pin
- Limits how far a ring can turn, so only part of the ring is reachable.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
- Bomb Ring
- Carries a timed bomb and can clear other rings. Deal with it before the countdown ends.Read the mechanism guide →
- Closed ring
- A closed ring has no opening. Release its blocking connections using the surrounding objects; the ring flies away automatically when it is free.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Middle left | Closed |
| 2 | Middle left | Closed |
| 3 | Lower center | Open |
| 4 | Upper center | Open |
| 5 | Lower center | Open |
| 6 | Center | Closed |
| 7 | Center | Open |
| 8 | Center | Open |
| 9 | Upper center | Open |
| 10 | Lower right | Open |
| 11 | Lower right | Open |
| 12 | Middle right | Open |
- Ring 7 is connected to a blocking relationship with ring 3. Check this pair on the diagram.
- Ring 7 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 12. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 2. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 9. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 1 is connected to a blocking relationship with ring 2. Check this pair on the diagram.
- Ring 1 is connected to a blocking relationship with ring 3. Check this pair on the diagram.
- Ring 11 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 10 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
Board · B
14 rings, 13 blocking pins, 7 slide bars, 6 clamps, 1 timed bomb
Ring numbers
1234567891011121314
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 14 · Blocking pins: 13 · Stop pins: 6 · Slide bars: 7 · Clamps: 6 · Bombs: 1
Step-by-step walkthrough
The complete route is still being worked out. Only the opening moves below passed the current checks; they do not establish a full solution. Bombs are shown at their saved positions; their effects and timers are not included in this candidate. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
Move S3 right along its track about 3.86 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S3. Expected remainder: 14 rings, 6 bars.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Stop pin
- Limits how far a ring can turn, so only part of the ring is reachable.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
- Bomb Ring
- Carries a timed bomb and can clear other rings. Deal with it before the countdown ends.Read the mechanism guide →
- Closed ring
- A closed ring has no opening. Release its blocking connections using the surrounding objects; the ring flies away automatically when it is free.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Lower left | Open |
| 2 | Upper left | Open |
| 3 | Middle left | Closed |
| 4 | Center | Open |
| 5 | Lower center | Open |
| 6 | Upper center | Closed |
| 7 | Upper center | Open |
| 8 | Center | Closed |
| 9 | Lower center | Open |
| 10 | Upper center | Open |
| 11 | Center | Open |
| 12 | Lower right | Open |
| 13 | Middle right | Closed |
| 14 | Upper right | Open |
- Ring 12 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 9. Check this pair on the diagram.
- Ring 13 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 13 is connected to a blocking relationship with ring 14. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 2. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 9. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 1 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
Board · C
15 rings, 13 blocking pins, 5 slide bars, 3 clamps
Ring numbers
123456789101112131415
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 15 · Blocking pins: 13 · Stop pins: 3 · Slide bars: 5 · Clamps: 3 · Bombs: 0
Step-by-step walkthrough
Candidate walkthrough; gameplay confirmation is pending. Release after each move and wait for the expected departures. Stop and report the first mismatch. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
Rotate Ring 4 clockwise about 178°. Target opening direction: 337° (right 0°, up 90°). Release and wait. Expected departure: Ring 4. Expected remainder: 14 rings, 5 bars.
Rotate Ring 1 clockwise about 123°. Target opening direction: 104° (right 0°, up 90°). Release and wait. Expected departure: Ring 1. Expected remainder: 13 rings, 5 bars.
Rotate Ring 6 clockwise about 95°. Target opening direction: 305° (right 0°, up 90°). Release and wait. Expected departure: Ring 6. Expected remainder: 12 rings, 5 bars.
Move S2 left along its track about 6.71 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S2. Expected remainder: 12 rings, 4 bars.
Move S3 down along its track about 1.43 ring radii. Release and wait. Expected departure: Ring 2. Expected remainder: 11 rings, 4 bars.
Move S3 down along its track about 4.57 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S3. Expected remainder: 11 rings, 3 bars.
Rotate Ring 8 counterclockwise about 167°. Target opening direction: 347° (right 0°, up 90°). Release and wait. Expected departure: Ring 8. Expected remainder: 10 rings, 3 bars.
Rotate Ring 12 counterclockwise about 93°. Target opening direction: 43° (right 0°, up 90°). Release and wait. Expected departure: Ring 12. Expected remainder: 9 rings, 3 bars.
Rotate Ring 5 counterclockwise about 92°. Target opening direction: 312° (right 0°, up 90°). Release and wait. Expected departure: Ring 5. Expected remainder: 8 rings, 3 bars.
Rotate Ring 9 counterclockwise about 86°. Target opening direction: 51° (right 0°, up 90°). Release and wait. Expected departure: Ring 9. Expected remainder: 7 rings, 3 bars.
Move S4 up along its track about 4.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S4. Expected remainder: 7 rings, 2 bars.
Rotate Ring 13 clockwise about 3°. Target opening direction: 357° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 7 rings, 2 bars.
Move S5 down along its track about 0.71 ring radii. Release and wait. No departure is expected yet. Expected remainder: 7 rings, 2 bars.
Rotate Ring 14 counterclockwise about 140°. Target opening direction: 155° (right 0°, up 90°). Release and wait. Expected departure: Ring 10, Ring 14. Expected remainder: 5 rings, 2 bars.
Move S1 right along its track about 1.57 ring radii. Release and wait. Expected departure: Ring 11. Expected remainder: 4 rings, 2 bars.
Move S1 left along its track about 13.57 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S1. Expected remainder: 4 rings, 1 bars.
Rotate Ring 7 clockwise about 149°. Target opening direction: 195° (right 0°, up 90°). Release and wait. Expected departure: Ring 3, Ring 7. Expected remainder: 2 rings, 1 bars.
Move S5 up along its track about 7.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S5. Expected remainder: 2 rings, 0 bars.
Rotate Ring 15 clockwise about 180°. Target opening direction: 310° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 2 rings, 0 bars.
Rotate Ring 15 clockwise about 14°. Target opening direction: 296° (right 0°, up 90°). Release and wait. Expected departure: Ring 15, Ring 13. Expected remainder: 0 rings, 0 bars.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Stop pin
- Limits how far a ring can turn, so only part of the ring is reachable.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Lower left | Open |
| 2 | Middle left | Open |
| 3 | Upper left | Open |
| 4 | Middle left | Open |
| 5 | Center | Open |
| 6 | Upper center | Open |
| 7 | Upper center | Open |
| 8 | Lower center | Open |
| 9 | Center | Open |
| 10 | Upper center | Open |
| 11 | Center | Open |
| 12 | Lower right | Open |
| 13 | Middle right | Open |
| 14 | Upper right | Open |
| 15 | Middle right | Open |
- Ring 3 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 7 is connected to a blocking relationship with ring 6. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 13 is connected to a blocking relationship with ring 12. Check this pair on the diagram.
- Ring 13 is connected to a blocking relationship with ring 15. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 11 is connected to a blocking relationship with ring 9. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 2 is connected to a blocking relationship with ring 1. Check this pair on the diagram.
- Ring 10 is connected to a blocking relationship with ring 14. Check this pair on the diagram.
Board · D
15 rings, 14 blocking pins, 3 slide bars, 1 clamp, 1 timed bomb
Ring numbers
123456789101112131415
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 15 · Blocking pins: 14 · Stop pins: 0 · Slide bars: 3 · Clamps: 1 · Bombs: 1
Step-by-step walkthrough
The complete route is still being worked out. Only the opening moves below passed the current checks; they do not establish a full solution. Bombs are shown at their saved positions; their effects and timers are not included in this candidate. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
Rotate Ring 11 clockwise about 123°. Target opening direction: 87° (right 0°, up 90°). Release and wait. Expected departure: Ring 11. Expected remainder: 14 rings, 3 bars.
Rotate Ring 15 clockwise about 90°. Target opening direction: 210° (right 0°, up 90°). Release and wait. Expected departure: Ring 15. Expected remainder: 13 rings, 3 bars.
Rotate Ring 1 clockwise about 128°. Target opening direction: 82° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 13 rings, 3 bars.
Move S2 right along its track about 1.14 ring radii. Release and wait. No departure is expected yet. Expected remainder: 13 rings, 3 bars.
Rotate Ring 14 clockwise about 180°. Target opening direction: 300° (right 0°, up 90°). Release and wait. Expected departure: Ring 14. Expected remainder: 12 rings, 3 bars.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
- Bomb Ring
- Carries a timed bomb and can clear other rings. Deal with it before the countdown ends.Read the mechanism guide →
- Closed ring
- A closed ring has no opening. Release its blocking connections using the surrounding objects; the ring flies away automatically when it is free.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Lower left | Open |
| 2 | Upper left | Open |
| 3 | Middle left | Open |
| 4 | Lower center | Open |
| 5 | Center | Open |
| 6 | Center | Open |
| 7 | Lower center | Open |
| 8 | Center | Closed |
| 9 | Upper center | Open |
| 10 | Center | Closed |
| 11 | Lower center | Open |
| 12 | Lower right | Open |
| 13 | Middle right | Open |
| 14 | Middle right | Open |
| 15 | Upper right | Open |
- Ring 12 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
- Ring 7 is connected to a blocking relationship with ring 12. Check this pair on the diagram.
- Ring 7 is connected to a blocking relationship with ring 6. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 15. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 2. Check this pair on the diagram.
- Ring 10 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 13 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 13 is connected to a blocking relationship with ring 14. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 1. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 3. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 1. Check this pair on the diagram.
Board · E
17 rings, 28 blocking pins, 4 slide bars, 4 clamps
Ring numbers
1234567891011121314151617
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 17 · Blocking pins: 28 · Stop pins: 0 · Slide bars: 4 · Clamps: 4 · Bombs: 0
Step-by-step walkthrough
The complete route is still being worked out. Only the opening moves below passed the current checks; they do not establish a full solution. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
Rotate Ring 17 clockwise about 69°. Target opening direction: 291° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 17 rings, 4 bars.
Rotate Ring 7 counterclockwise about 69°. Target opening direction: 339° (right 0°, up 90°). Release and wait. Expected departure: Ring 15. Expected remainder: 16 rings, 4 bars.
Move S1 right along its track about 6.43 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S1. Expected remainder: 16 rings, 3 bars.
Rotate Ring 17 clockwise about 35°. Target opening direction: 256° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 16 rings, 3 bars.
Rotate Ring 1 clockwise about 69°. Target opening direction: 111° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 16 rings, 3 bars.
Rotate Ring 11 counterclockwise about 69°. Target opening direction: 159° (right 0°, up 90°). Release and wait. Expected departure: Ring 3. Expected remainder: 15 rings, 3 bars.
Move S2 left along its track about 6.43 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S2. Expected remainder: 15 rings, 2 bars.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
- Closed ring
- A closed ring has no opening. Release its blocking connections using the surrounding objects; the ring flies away automatically when it is free.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Middle left | Open |
| 2 | Lower left | Open |
| 3 | Upper left | Open |
| 4 | Lower left | Open |
| 5 | Middle left | Open |
| 6 | Upper left | Open |
| 7 | Lower center | Open |
| 8 | Lower center | Open |
| 9 | Center | Closed |
| 10 | Upper center | Open |
| 11 | Upper center | Open |
| 12 | Lower right | Open |
| 13 | Middle right | Open |
| 14 | Upper right | Open |
| 15 | Lower right | Open |
| 16 | Upper right | Open |
| 17 | Middle right | Open |
- Ring 9 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 13. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 14 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 14 is connected to a blocking relationship with ring 13. Check this pair on the diagram.
- Ring 14 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
- Ring 14 is connected to a blocking relationship with ring 17. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 1. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 13. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 17. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 1. Check this pair on the diagram.
- Ring 16 is connected to a blocking relationship with ring 17. Check this pair on the diagram.
- Ring 16 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
- Ring 2 is connected to a blocking relationship with ring 1. Check this pair on the diagram.
- Ring 2 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 15 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 15 is connected to a blocking relationship with ring 17. Check this pair on the diagram.
- Ring 3 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
- Ring 3 is connected to a blocking relationship with ring 1. Check this pair on the diagram.
Board · F
17 rings, 18 blocking pins, 9 slide bars, 9 clamps, 1 timed bomb
Ring numbers
1234567891011121314151617
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 17 · Blocking pins: 18 · Stop pins: 2 · Slide bars: 9 · Clamps: 9 · Bombs: 1
Step-by-step walkthrough
The complete route is still being worked out. Only the opening moves below passed the current checks; they do not establish a full solution. Bombs are shown at their saved positions; their effects and timers are not included in this candidate. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
Move S8 left along its track about 4.57 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S8. Expected remainder: 17 rings, 8 bars.
Move S9 right along its track about 4.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S9. Expected remainder: 17 rings, 7 bars.
Rotate Ring 15 counterclockwise about 90°. Target opening direction: 90° (right 0°, up 90°). Release and wait. Expected departure: Ring 15. Expected remainder: 16 rings, 7 bars.
Rotate Ring 3 clockwise about 90°. Target opening direction: 180° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 16 rings, 7 bars.
Rotate Ring 3 clockwise about 60°. Target opening direction: 120° (right 0°, up 90°). Release and wait. Expected departure: Ring 3. Expected remainder: 15 rings, 7 bars.
Rotate Ring 1 clockwise about 120°. Target opening direction: 60° (right 0°, up 90°). Release and wait. Expected departure: Ring 1. Expected remainder: 14 rings, 7 bars.
Rotate Ring 9 clockwise about 3°. Target opening direction: 282° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 14 rings, 7 bars.
Rotate Ring 4 clockwise about 25°. This closed ring turns together with its pins. Release and wait. Expected departure: Ring 4. Expected remainder: 13 rings, 7 bars.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Stop pin
- Limits how far a ring can turn, so only part of the ring is reachable.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
- Bomb Ring
- Carries a timed bomb and can clear other rings. Deal with it before the countdown ends.Read the mechanism guide →
- Closed ring
- A closed ring has no opening. Release its blocking connections using the surrounding objects; the ring flies away automatically when it is free.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Lower left | Open |
| 2 | Upper left | Open |
| 3 | Lower center | Open |
| 4 | Lower center | Closed |
| 5 | Upper center | Closed |
| 6 | Upper center | Open |
| 7 | Center | Open |
| 8 | Center | Open |
| 9 | Lower center | Open |
| 10 | Lower center | Open |
| 11 | Upper center | Open |
| 12 | Lower center | Open |
| 13 | Center | Closed |
| 14 | Upper center | Open |
| 15 | Center | Open |
| 16 | Upper right | Closed |
| 17 | Middle right | Open |
- Ring 13 is connected to a blocking relationship with ring 12. Check this pair on the diagram.
- Ring 13 is connected to a blocking relationship with ring 9. Check this pair on the diagram.
- Ring 13 is connected to a blocking relationship with ring 17. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 3. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 1. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 9. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 6. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 2. Check this pair on the diagram.
- Ring 1 is connected to a blocking relationship with ring 3. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 11 is connected to a blocking relationship with ring 15. Check this pair on the diagram.
- Ring 16 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
- Ring 16 is connected to a blocking relationship with ring 14. Check this pair on the diagram.
Board · G
12 rings, 14 blocking pins, 13 slide bars, 12 clamps
Ring numbers
123456789101112
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 12 · Blocking pins: 14 · Stop pins: 0 · Slide bars: 13 · Clamps: 12 · Bombs: 0
Step-by-step walkthrough
The complete route is still being worked out. Only the opening moves below passed the current checks; they do not establish a full solution. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
Rotate Ring 10 clockwise about 55°. Target opening direction: 150° (right 0°, up 90°). Release and wait. Expected departure: Ring 10. Expected remainder: 11 rings, 13 bars.
Move S13 right along its track about 4.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S13. Expected remainder: 11 rings, 12 bars.
Move S9 down along its track about 3.57 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S9. Expected remainder: 11 rings, 11 bars.
Move S10 down along its track about 4.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S10. Expected remainder: 11 rings, 10 bars.
Rotate Ring 11 clockwise about 150°. Target opening direction: 120° (right 0°, up 90°). Release and wait. Expected departure: Ring 11. Expected remainder: 10 rings, 10 bars.
Rotate Ring 4 clockwise about 35°. Target opening direction: 235° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 10 rings, 10 bars.
Rotate Ring 4 clockwise about 61°. Target opening direction: 174° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 10 rings, 10 bars.
Rotate Ring 2 counterclockwise about 1°. Target opening direction: 271° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 10 rings, 10 bars.
Rotate Ring 5 clockwise about 36°. Target opening direction: 234° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 10 rings, 10 bars.
Rotate Ring 1 clockwise about 15°. Target opening direction: 75° (right 0°, up 90°). Release and wait. Expected departure: Ring 1. Expected remainder: 9 rings, 10 bars.
Move S7 down along its track about 1.71 ring radii. Release and wait. No departure is expected yet. Expected remainder: 9 rings, 10 bars.
Rotate Ring 5 counterclockwise about 72°. Target opening direction: 306° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 9 rings, 10 bars.
Rotate Ring 9 counterclockwise about 15°. Target opening direction: 105° (right 0°, up 90°). Release and wait. Expected departure: Ring 9. Expected remainder: 8 rings, 10 bars.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Upper left | Open |
| 2 | Lower left | Open |
| 3 | Middle left | Open |
| 4 | Center | Open |
| 5 | Upper center | Open |
| 6 | Upper center | Open |
| 7 | Center | Open |
| 8 | Lower center | Open |
| 9 | Upper center | Open |
| 10 | Middle right | Open |
| 11 | Lower right | Open |
| 12 | Middle right | Open |
- Ring 1 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 3 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 3 is connected to a blocking relationship with ring 2. Check this pair on the diagram.
- Ring 7 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 8 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 8 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 2 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
Board · H
12 rings, 14 blocking pins, 13 slide bars, 12 clamps
Ring numbers
123456789101112
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 12 · Blocking pins: 14 · Stop pins: 0 · Slide bars: 13 · Clamps: 12 · Bombs: 0
Step-by-step walkthrough
The complete route is still being worked out. Only the opening moves below passed the current checks; they do not establish a full solution. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
Move S13 right along its track about 4.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S13. Expected remainder: 12 rings, 12 bars.
Move S9 down along its track about 3.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S9. Expected remainder: 12 rings, 11 bars.
Move S10 down along its track about 4.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S10. Expected remainder: 12 rings, 10 bars.
Rotate Ring 11 clockwise about 165°. Target opening direction: 105° (right 0°, up 90°). Release and wait. Expected departure: Ring 11. Expected remainder: 11 rings, 10 bars.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Upper left | Open |
| 2 | Lower left | Open |
| 3 | Middle left | Open |
| 4 | Center | Open |
| 5 | Upper center | Open |
| 6 | Upper center | Open |
| 7 | Center | Open |
| 8 | Lower center | Open |
| 9 | Upper center | Open |
| 10 | Middle right | Open |
| 11 | Lower right | Open |
| 12 | Middle right | Open |
- Ring 1 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 3 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 3 is connected to a blocking relationship with ring 2. Check this pair on the diagram.
- Ring 7 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 8 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 8 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 2 is connected to a blocking relationship with ring 4. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 11. Check this pair on the diagram.
Board · I
18 rings, 22 blocking pins, 8 slide bars, 3 clamps, 1 timed bomb
Ring numbers
123456789101112131415161718
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 18 · Blocking pins: 22 · Stop pins: 3 · Slide bars: 8 · Clamps: 3 · Bombs: 1
Step-by-step walkthrough
The complete route is still being worked out. Only the opening moves below passed the current checks; they do not establish a full solution. Bombs are shown at their saved positions; their effects and timers are not included in this candidate. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
Rotate Ring 2 counterclockwise about 30°. Target opening direction: 300° (right 0°, up 90°). Release and wait. Expected departure: Ring 2. Expected remainder: 17 rings, 8 bars.
Move S2 up along its track about 5.71 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S2. Expected remainder: 17 rings, 7 bars.
Move S5 left along its track about 3.43 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S5. Expected remainder: 17 rings, 6 bars.
Rotate Ring 13 counterclockwise about 30°. Target opening direction: 180° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 17 rings, 6 bars.
Rotate Ring 18 clockwise about 22°. Target opening direction: 338° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 17 rings, 6 bars.
Rotate Ring 18 clockwise about 128°. Target opening direction: 210° (right 0°, up 90°). Release and wait. Expected departure: Ring 18. Expected remainder: 16 rings, 6 bars.
Move S4 right along its track about 3.86 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S4. Expected remainder: 16 rings, 5 bars.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Stop pin
- Limits how far a ring can turn, so only part of the ring is reachable.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
- Bomb Ring
- Carries a timed bomb and can clear other rings. Deal with it before the countdown ends.Read the mechanism guide →
- Closed ring
- A closed ring has no opening. Release its blocking connections using the surrounding objects; the ring flies away automatically when it is free.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Middle left | Open |
| 2 | Upper left | Open |
| 3 | Lower left | Open |
| 4 | Lower center | Open |
| 5 | Center | Open |
| 6 | Upper center | Closed |
| 7 | Center | Open |
| 8 | Center | Closed |
| 9 | Lower center | Open |
| 10 | Lower center | Open |
| 11 | Center | Open |
| 12 | Upper center | Open |
| 13 | Lower center | Open |
| 14 | Center | Open |
| 15 | Upper center | Open |
| 16 | Lower right | Open |
| 17 | Middle right | Open |
| 18 | Upper right | Open |
- Ring 15 is connected to a blocking relationship with ring 18. Check this pair on the diagram.
- Ring 15 is connected to a blocking relationship with ring 14. Check this pair on the diagram.
- Ring 11 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 11 is connected to a blocking relationship with ring 14. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 15. Check this pair on the diagram.
- Ring 7 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 16 is connected to a blocking relationship with ring 13. Check this pair on the diagram.
- Ring 16 is connected to a blocking relationship with ring 17. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 3. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 13. Check this pair on the diagram.
- Ring 1 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 12. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 2. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
Board · J
18 rings, 22 blocking pins, 8 slide bars, 3 clamps, 1 timed bomb
Ring numbers
123456789101112131415161718
Numbers identify the rings on the diagram; they do not specify an operation order.
Diagram legend
Numbers identify individual rings; S labels bars, C labels clamps, and B marks a bomb. Match the colored rings, pins, slide bars and clamps to your board.
Rings: 18 · Blocking pins: 22 · Stop pins: 3 · Slide bars: 8 · Clamps: 3 · Bombs: 1
Step-by-step walkthrough
The complete route is still being worked out. Only the opening moves below passed the current checks; they do not establish a full solution. Bombs are shown at their saved positions; their effects and timers are not included in this candidate. This candidate assumes a clamp opens when its paired bar leaves; confirm this behavior in the game.
Move S5 left along its track about 3.43 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S5. Expected remainder: 18 rings, 7 bars.
Rotate Ring 13 counterclockwise about 45°. Target opening direction: 195° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 18 rings, 7 bars.
Rotate Ring 18 clockwise about 22°. Target opening direction: 338° (right 0°, up 90°). Release and wait. No departure is expected yet. Expected remainder: 18 rings, 7 bars.
Rotate Ring 18 clockwise about 143°. Target opening direction: 195° (right 0°, up 90°). Release and wait. Expected departure: Ring 18. Expected remainder: 17 rings, 7 bars.
Move S4 right along its track about 4.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S4. Expected remainder: 17 rings, 6 bars.
Read this board before making a move
- Ring
- An open ring can rotate. Align its opening with the connecting pin to release that connection. Rings fly away automatically once their connections and constraints are released.
- Blocking pin
- A fixed pin sitting on a ring's edge. It holds another ring in place, so its gap has to face this pin.Read the mechanism guide →
- Stop pin
- Limits how far a ring can turn, so only part of the ring is reachable.Read the mechanism guide →
- Latch
- Holds a ring in place. A stick locks it, so release the stick first and then turn the matching ring.Read the mechanism guide →
- Stick
- Slide bar. Move it sideways to release the latch it is tied to.Read the mechanism guide →
- Bomb Ring
- Carries a timed bomb and can clear other rings. Deal with it before the countdown ends.Read the mechanism guide →
- Closed ring
- A closed ring has no opening. Release its blocking connections using the surrounding objects; the ring flies away automatically when it is free.Read the mechanism guide →
Ring positions and connections
Positions refer to the diagram. Connections describe what to inspect, not an additional removal order.
| Ring | Position | Type |
|---|---|---|
| 1 | Middle left | Open |
| 2 | Upper left | Open |
| 3 | Lower left | Open |
| 4 | Lower center | Open |
| 5 | Center | Open |
| 6 | Upper center | Closed |
| 7 | Center | Open |
| 8 | Center | Closed |
| 9 | Lower center | Open |
| 10 | Lower center | Open |
| 11 | Center | Open |
| 12 | Upper center | Open |
| 13 | Lower center | Open |
| 14 | Center | Open |
| 15 | Upper center | Open |
| 16 | Lower right | Open |
| 17 | Middle right | Open |
| 18 | Upper right | Open |
- Ring 15 is connected to a blocking relationship with ring 18. Check this pair on the diagram.
- Ring 15 is connected to a blocking relationship with ring 14. Check this pair on the diagram.
- Ring 11 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 11 is connected to a blocking relationship with ring 14. Check this pair on the diagram.
- Ring 12 is connected to a blocking relationship with ring 15. Check this pair on the diagram.
- Ring 7 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 16 is connected to a blocking relationship with ring 13. Check this pair on the diagram.
- Ring 16 is connected to a blocking relationship with ring 17. Check this pair on the diagram.
- Ring 4 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
- Ring 5 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 3. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 10. Check this pair on the diagram.
- Ring 9 is connected to a blocking relationship with ring 13. Check this pair on the diagram.
- Ring 1 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 12. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 2. Check this pair on the diagram.
- Ring 6 is connected to a blocking relationship with ring 8. Check this pair on the diagram.
Frequently asked questions
Which board should I use for level 89?
This page has 10 distinct boards. The default A board has 12 rings and 14 blocking pins. Compare these features and the thumbnails before following its steps.
What do the numbers on the diagram mean?
They identify individual rings, not the operation order. A written step can also describe a bar or latch, so the step number is not always the ring number. Match the ring number named in the instruction with the diagram.
What should I check when I am stuck on level 89?
Check whether the ring is open or closed, whether a stop pin limits rotation and whether a latch is still locked by a bar. Repeated rotation does not remove a fixed obstruction. Compare the neighboring connections, then return to the step for the matching ring number.
