Knight’s Tour
Can a knight visit all 64 squares of a chessboard exactly once? Try it yourself — legal moves light up, visited squares fill in, and the numbered trail records your route. When you get stuck, let Warnsdorff’s wonderfully simple heuristic take over: always jump to the square with the fewest onward moves. That one greedy rule threads the knight through the whole board almost every time, with no search at all.
Runs 100% in your browser — simulations are computed locally on your device.
Read the full guide to this tool
Notes
- Warnsdorff’s rule: move to the square with the fewest continuations — save the flexible squares for later.
- Closed tours (ending a knight’s move from the start) exist on the 8×8 board — over 26 trillion of them.
- No tour exists on boards smaller than 5×5 (except the trivial 1×1).
- Runs 100% in your browser — simulations are computed locally on your device.
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