Rotate Rings
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Rotate Rings

Rotate Rings Level 90 walkthrough

Board diagram

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

16 rings, 8 blocking pins, 17 slide bars, 17 clamps

12345678910111213141516

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 / G

Level 90 · Schedules A, G · Board diagram
Board diagram

16 rings, 8 blocking pins, 17 slide bars, 17 clamps

Ring numbers

12345678910111213141516

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: 16 · Blocking pins: 8 · Stop pins: 0 · Slide bars: 17 · Clamps: 17 · 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.

  1. Rotate Ring 16 clockwise about 150°. Target opening direction: 300° (right 0°, up 90°). Release and wait. Expected departure: Ring 16, Ring 3. Expected remainder: 14 rings, 17 bars.

  2. Rotate Ring 14 clockwise about 34°. Target opening direction: 1° (right 0°, up 90°). Release and wait. Expected departure: Ring 14, Ring 12. Expected remainder: 12 rings, 17 bars.

  3. Rotate Ring 6 counterclockwise about 35°. Target opening direction: 250° (right 0°, up 90°). Release and wait. Expected departure: Ring 8, Ring 6. Expected remainder: 10 rings, 17 bars.

  4. Rotate Ring 13 clockwise about 35°. Target opening direction: 290° (right 0°, up 90°). Release and wait. Expected departure: Ring 13, Ring 11. Expected remainder: 8 rings, 17 bars.

  5. Rotate Ring 10 clockwise about 150°. Target opening direction: 120° (right 0°, up 90°). Release and wait. Expected departure: Ring 10, Ring 15. Expected remainder: 6 rings, 17 bars.

  6. Rotate Ring 7 clockwise about 35°. Target opening direction: 110° (right 0°, up 90°). Release and wait. Expected departure: Ring 9, Ring 7. Expected remainder: 4 rings, 17 bars.

  7. Move S1 right along its track about 9.71 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S1. Expected remainder: 4 rings, 16 bars.

Report a walkthrough issue

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.

RingPositionType
1Lower leftOpen
2Lower leftOpen
3Middle leftClosed
4Lower leftOpen
5Lower leftOpen
6CenterOpen
7Upper centerOpen
8CenterOpen
9Upper centerOpen
10Lower centerOpen
11Middle rightOpen
12Upper rightOpen
13Middle rightOpen
14Upper rightOpen
15Lower centerClosed
16Middle leftOpen
  • Ring 3 is connected to a blocking relationship with ring 16. Check this pair on the diagram.
  • Ring 15 is connected to a blocking relationship with ring 10. 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 9 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 14. Check this pair on the diagram.
  • Ring 8 is connected to a blocking relationship with ring 6. Check this pair on the diagram.
  • Ring 11 is connected to a blocking relationship with ring 13. Check this pair on the diagram.

Board · B / C / D

Level 90 · Schedules B, C, D · Board diagram
Board diagram

17 rings, 11 blocking pins, 13 slide bars, 10 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: 11 · Stop pins: 0 · Slide bars: 13 · Clamps: 10 · 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.

  1. Rotate Ring 5 clockwise about 51°. Target opening direction: 4° (right 0°, up 90°). Release and wait. Expected departure: Ring 6, Ring 5. Expected remainder: 15 rings, 13 bars.

  2. Rotate Ring 15 counterclockwise about 48°. Target opening direction: 198° (right 0°, up 90°). Release and wait. Expected departure: Ring 15, Ring 16. Expected remainder: 13 rings, 13 bars.

  3. Rotate Ring 12 counterclockwise about 48°. Target opening direction: 273° (right 0°, up 90°). Release and wait. Expected departure: Ring 12, Ring 13. Expected remainder: 11 rings, 13 bars.

  4. Rotate Ring 2 clockwise about 36°. Target opening direction: 137° (right 0°, up 90°). Release and wait. Expected departure: Ring 2, Ring 1. Expected remainder: 9 rings, 13 bars.

  5. Rotate Ring 8 counterclockwise about 57°. Target opening direction: 338° (right 0°, up 90°). Release and wait. Expected departure: Ring 8, Ring 9. Expected remainder: 7 rings, 13 bars.

  6. Rotate Ring 4 counterclockwise about 48°. Target opening direction: 18° (right 0°, up 90°). Release and wait. Expected departure: Ring 4, Ring 3. Expected remainder: 5 rings, 13 bars.

  7. Move S12 right along its track about 1.14 ring radii. Release and wait. Expected departure: Ring 7. Expected remainder: 4 rings, 13 bars.

  8. Rotate Ring 10 clockwise about 31°. Target opening direction: 44° (right 0°, up 90°). Release and wait. Expected departure: Ring 10. Expected remainder: 3 rings, 13 bars.

  9. Move S13 left along its track about 1.00 ring radii. Release and wait. Expected departure: Ring 17. Expected remainder: 2 rings, 13 bars.

  10. Move S13 left along its track about 0.71 ring radii. Release and wait. Expected departure: Ring 14. Expected remainder: 1 rings, 13 bars.

  11. Move S10 right along its track about 4.71 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S10. Expected remainder: 1 rings, 12 bars.

  12. Move S11 right along its track about 10.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S11. Expected remainder: 1 rings, 11 bars.

  13. Move S12 left along its track about 8.57 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S12. Expected remainder: 1 rings, 10 bars.

  14. Move S13 left along its track about 11.29 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S13. Expected remainder: 1 rings, 9 bars.

  15. Move S2 right along its track about 5.57 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S2. Expected remainder: 1 rings, 8 bars.

  16. Move S3 right along its track about 5.57 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S3. Expected remainder: 1 rings, 7 bars.

  17. Move S4 up along its track about 5.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S4. Expected remainder: 1 rings, 6 bars.

  18. Move S5 left along its track about 7.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S5. Expected remainder: 1 rings, 5 bars.

  19. Move S6 left along its track about 7.29 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S6. Expected remainder: 1 rings, 4 bars.

  20. Move S7 left along its track about 6.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S7. Expected remainder: 1 rings, 3 bars.

  21. Move S8 left along its track about 6.43 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S8. Expected remainder: 1 rings, 2 bars.

  22. Move S9 left along its track about 10.86 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S9. Expected remainder: 1 rings, 1 bars.

  23. Rotate Ring 11 clockwise about 26°. This closed ring turns together with its pins. Release and wait. Expected departure: Ring 11. Expected remainder: 0 rings, 1 bars.

  24. Move S1 right along its track about 10.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S1. Expected remainder: 0 rings, 0 bars.

Report a walkthrough issue

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.

RingPositionType
1CenterOpen
2CenterOpen
3Upper centerOpen
4Upper centerOpen
5CenterOpen
6CenterOpen
7CenterOpen
8Upper rightOpen
9Upper rightOpen
10Middle rightOpen
11Middle rightClosed
12Upper rightOpen
13Upper rightOpen
14Middle rightOpen
15Middle rightOpen
16Middle rightOpen
17Middle rightOpen
  • Ring 12 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 2. Check this pair on the diagram.
  • Ring 8 is connected to a blocking relationship with ring 9. Check this pair on the diagram.
  • Ring 4 is connected to a blocking relationship with ring 3. Check this pair on the diagram.
  • Ring 6 is connected to a blocking relationship with ring 5. Check this pair on the diagram.
  • Ring 15 is connected to a blocking relationship with ring 16. Check this pair on the diagram.

Board · E

Level 90 · Schedules E · Board diagram
Board diagram

8 rings, 6 blocking pins, 13 slide bars, 10 clamps

Ring numbers

12345678

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: 8 · Blocking pins: 6 · Stop pins: 0 · Slide bars: 13 · Clamps: 10 · 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.

  1. Rotate Ring 3 clockwise about 35°. Target opening direction: 55° (right 0°, up 90°). Release and wait. Expected departure: Ring 2, Ring 3. Expected remainder: 6 rings, 13 bars.

  2. Rotate Ring 8 clockwise about 16°. Target opening direction: 8° (right 0°, up 90°). Release and wait. Expected departure: Ring 8, Ring 7. Expected remainder: 4 rings, 13 bars.

  3. Rotate Ring 6 clockwise about 22°. Target opening direction: 68° (right 0°, up 90°). Release and wait. Expected departure: Ring 6, Ring 5. Expected remainder: 2 rings, 13 bars.

  4. Move S10 right along its track about 4.86 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S10. Expected remainder: 2 rings, 12 bars.

  5. Move S11 right along its track about 7.71 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S11. Expected remainder: 2 rings, 11 bars.

  6. Move S12 left along its track about 8.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S12. Expected remainder: 2 rings, 10 bars.

  7. Rotate Ring 4 counterclockwise about 7°. Target opening direction: 277° (right 0°, up 90°). Release and wait. Expected departure: Ring 4. Expected remainder: 1 rings, 10 bars.

  8. Move S6 right along its track about 9.29 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S6. Expected remainder: 1 rings, 9 bars.

  9. Move S3 left along its track about 12.57 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S3. Expected remainder: 1 rings, 8 bars.

  10. Move S8 right along its track about 12.86 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S8. Expected remainder: 1 rings, 7 bars.

  11. Move S5 right along its track about 5.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S5. Expected remainder: 1 rings, 6 bars.

  12. Move S7 left along its track about 0.86 ring radii. Release and wait. Expected departure: Ring 1. Expected remainder: 0 rings, 6 bars.

  13. Move S1 right along its track about 14.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S1. Expected remainder: 0 rings, 5 bars.

  14. Move S7 left along its track about 6.86 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S7. Expected remainder: 0 rings, 4 bars.

  15. Move S9 left along its track about 13.86 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S9. Expected remainder: 0 rings, 3 bars.

Report a walkthrough issue

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.

RingPositionType
1CenterOpen
2CenterOpen
3CenterOpen
4Lower centerOpen
5CenterOpen
6CenterOpen
7CenterOpen
8CenterOpen
  • Ring 2 is connected to a blocking relationship with ring 3. Check this pair on the diagram.
  • Ring 8 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 6. Check this pair on the diagram.

Board · F

Level 90 · Schedules F · Board diagram
Board diagram

4 rings, 3 blocking pins, 8 slide bars, 7 clamps

Ring numbers

1234

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: 4 · Blocking pins: 3 · Stop pins: 0 · Slide bars: 8 · Clamps: 7 · 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.

  1. Move S1 right along its track about 3.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S1. Expected remainder: 4 rings, 7 bars.

  2. Rotate Ring 4 clockwise about 56°. Target opening direction: 359° (right 0°, up 90°). Release and wait. Expected departure: Ring 4. Expected remainder: 3 rings, 7 bars.

  3. Move S2 right along its track about 3.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S2. Expected remainder: 3 rings, 6 bars.

  4. Move S4 left along its track about 3.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S4. Expected remainder: 3 rings, 5 bars.

  5. Rotate Ring 1 counterclockwise about 53°. Target opening direction: 288° (right 0°, up 90°). Release and wait. Expected departure: Ring 2, Ring 1. Expected remainder: 1 rings, 5 bars.

  6. Move S3 left along its track about 2.00 ring radii. Release and wait. Expected departure: Ring 3. Expected remainder: 0 rings, 5 bars.

  7. Move S3 left along its track about 5.14 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S3. Expected remainder: 0 rings, 4 bars.

  8. Move S5 right along its track about 3.29 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S5. Expected remainder: 0 rings, 3 bars.

  9. Move S6 right along its track about 9.43 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S6. Expected remainder: 0 rings, 2 bars.

  10. Move S7 right along its track about 9.00 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S7. Expected remainder: 0 rings, 1 bars.

  11. Move S8 right along its track about 3.57 ring radii. Continue until the bar leaves the board. Release and wait. Expected departure: S8. Expected remainder: 0 rings, 0 bars.

Report a walkthrough issue

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.

RingPositionType
1Lower leftOpen
2CenterClosed
3CenterOpen
4Upper rightOpen
  • Ring 2 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.

Board · H

Level 90 · Schedules H · Board diagram
Board diagram

16 rings, 8 blocking pins, 17 slide bars, 17 clamps

Ring numbers

12345678910111213141516

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: 16 · Blocking pins: 8 · Stop pins: 0 · Slide bars: 17 · Clamps: 17 · 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.

  1. Rotate Ring 15 clockwise about 165°. Target opening direction: 285° (right 0°, up 90°). Release and wait. Expected departure: Ring 15, Ring 3. Expected remainder: 14 rings, 17 bars.

  2. Rotate Ring 14 clockwise about 34°. Target opening direction: 1° (right 0°, up 90°). Release and wait. Expected departure: Ring 14, Ring 12. Expected remainder: 12 rings, 17 bars.

  3. Rotate Ring 6 counterclockwise about 35°. Target opening direction: 250° (right 0°, up 90°). Release and wait. Expected departure: Ring 8, Ring 6. Expected remainder: 10 rings, 17 bars.

Report a walkthrough issue

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.

RingPositionType
1Lower leftOpen
2Lower leftOpen
3Middle leftClosed
4Lower leftOpen
5Lower leftOpen
6CenterOpen
7Upper centerOpen
8CenterOpen
9Upper centerOpen
10Lower centerClosed
11Middle rightOpen
12Upper rightOpen
13Middle rightOpen
14Upper rightOpen
15Middle leftOpen
16Lower centerOpen
  • Ring 3 is connected to a blocking relationship with ring 15. Check this pair on the diagram.
  • Ring 10 is connected to a blocking relationship with ring 16. 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 9 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 14. Check this pair on the diagram.
  • Ring 8 is connected to a blocking relationship with ring 6. Check this pair on the diagram.
  • Ring 11 is connected to a blocking relationship with ring 13. Check this pair on the diagram.

Board · I

Level 90 · Schedules I · Board diagram
Board diagram

9 rings, 7 blocking pins

Ring numbers

123456789

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: 9 · Blocking pins: 7 · Stop pins: 1 · Slide bars: 0 · Clamps: 0 · 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.

  1. Rotate Ring 4 clockwise about 85°. Target opening direction: 325° (right 0°, up 90°). Release and wait. Expected departure: Ring 5. Expected remainder: 8 rings, 0 bars.

  2. Rotate Ring 4 clockwise about 125°. Target opening direction: 200° (right 0°, up 90°). Release and wait. Expected departure: Ring 4. Expected remainder: 7 rings, 0 bars.

  3. Rotate Ring 2 clockwise about 110°. Target opening direction: 125° (right 0°, up 90°). Release and wait. Expected departure: Ring 1. Expected remainder: 6 rings, 0 bars.

  4. Rotate Ring 2 clockwise about 147°. Target opening direction: 338° (right 0°, up 90°). Release and wait. Expected departure: Ring 2. Expected remainder: 5 rings, 0 bars.

  5. Rotate Ring 6 counterclockwise about 90°. Target opening direction: 140° (right 0°, up 90°). Release and wait. Expected departure: Ring 3, Ring 6. Expected remainder: 3 rings, 0 bars.

  6. Rotate Ring 7 clockwise about 85°. Target opening direction: 120° (right 0°, up 90°). Release and wait. Expected departure: Ring 8. Expected remainder: 2 rings, 0 bars.

  7. Rotate Ring 7 clockwise about 150°. Target opening direction: 330° (right 0°, up 90°). Release and wait. Expected departure: Ring 7, Ring 9. Expected remainder: 0 rings, 0 bars.

Report a walkthrough issue

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 →
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.

RingPositionType
1Upper leftClosed
2Middle leftOpen
3Lower centerOpen
4CenterOpen
5CenterOpen
6Lower centerOpen
7Middle rightOpen
8Upper rightClosed
9Lower rightOpen
  • 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 4. Check this pair on the diagram.
  • Ring 5 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 9 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
  • Ring 3 is connected to a blocking relationship with ring 6. Check this pair on the diagram.
  • Ring 3 is connected to a blocking relationship with ring 2. Check this pair on the diagram.

Board · J

Level 90 · Schedules J · Board diagram
Board diagram

9 rings, 7 blocking pins

Ring numbers

123456789

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: 9 · Blocking pins: 7 · Stop pins: 1 · Slide bars: 0 · Clamps: 0 · 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.

  1. Rotate Ring 4 clockwise about 100°. Target opening direction: 310° (right 0°, up 90°). Release and wait. Expected departure: Ring 5. Expected remainder: 8 rings, 0 bars.

  2. Rotate Ring 4 clockwise about 125°. Target opening direction: 185° (right 0°, up 90°). Release and wait. Expected departure: Ring 4. Expected remainder: 7 rings, 0 bars.

  3. Rotate Ring 2 clockwise about 125°. Target opening direction: 110° (right 0°, up 90°). Release and wait. Expected departure: Ring 1. Expected remainder: 6 rings, 0 bars.

  4. Rotate Ring 2 clockwise about 147°. Target opening direction: 323° (right 0°, up 90°). Release and wait. Expected departure: Ring 2. Expected remainder: 5 rings, 0 bars.

  5. Rotate Ring 6 counterclockwise about 105°. Target opening direction: 155° (right 0°, up 90°). Release and wait. Expected departure: Ring 3, Ring 6. Expected remainder: 3 rings, 0 bars.

  6. Rotate Ring 7 clockwise about 100°. Target opening direction: 105° (right 0°, up 90°). Release and wait. Expected departure: Ring 8. Expected remainder: 2 rings, 0 bars.

  7. Rotate Ring 7 clockwise about 150°. Target opening direction: 315° (right 0°, up 90°). Release and wait. Expected departure: Ring 7, Ring 9. Expected remainder: 0 rings, 0 bars.

Report a walkthrough issue

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 →
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.

RingPositionType
1Upper leftClosed
2Middle leftOpen
3Lower centerOpen
4CenterOpen
5CenterOpen
6Lower centerOpen
7Middle rightOpen
8Upper rightClosed
9Lower rightOpen
  • 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 4. Check this pair on the diagram.
  • Ring 5 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 9 is connected to a blocking relationship with ring 7. Check this pair on the diagram.
  • Ring 3 is connected to a blocking relationship with ring 6. Check this pair on the diagram.
  • Ring 3 is connected to a blocking relationship with ring 2. Check this pair on the diagram.

Frequently asked questions

Which board should I use for level 90?

This page has 7 distinct boards. The default A board has 16 rings and 8 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 90?

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.

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