Interlock
Rotate the rings to sort every bead to its home arc.👆
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Play to set a score, then submit it to the board.
About Interlock
Interlock takes its shape from the Hungarian Rings, the classic puzzle of two overlapping loops you rotate to untangle. Here two rings of colored beads mesh at two shared crossing points, and you turn the left ring or the right ring one step at a time — but every turn drags the shared beads into the other ring, so no move touches just one loop. That coupling is the entire puzzle: the two crossing points are the only doors beads use to travel between rings, so the technique is to line a bead up at a crossing, then rotate the opposite ring to carry it home. Finish one ring carelessly and you will scramble the other, which is why you work them together rather than in sequence, thinking a few rotations ahead like a round version of a sliding puzzle. It is pure logic with no luck involved, fewer moves scores higher, and undo lets you back out of a dead-end line. Free in your browser, best solve saved locally.
How to play
- Two rings of colored beads overlap and share two crossing beads.
- Rotate the left ring or the right ring one step at a time.
- Turning a ring carries the shared beads into the other ring, so every move mixes both.
- Return every bead to its own colored home arc to solve it.
Strategy & tips
- The two shared crossing points are the only way beads move between rings — everything routes through them.
- Line up a bead at a crossing point, then rotate the other ring to carry it where it belongs.
- Solving one ring can disturb the other, so work the two together rather than finishing one alone.
- Fewer moves scores higher, so undo and re-plan when a sequence turns out longer than expected.
- Think a few rotations ahead — like a round version of a sliding puzzle.
FAQ
How do beads move between the rings?
Only through the two shared crossing beads. Rotating one ring shifts those shared beads into the other ring, which is what lets you sort them.
Is this like a Rubik style puzzle?
It shares DNA with Hungarian Rings — two interlocked loops you rotate to sort. It is pure logic, no luck.
Can I undo a rotation?
Yes. Undo lets you back out of a line that is not working, though a solved-in-fewer-moves run scores best.