All challenges

Find a high-value path on a tiled 50 by 50 board without revisiting a tile.

Find a palindrome walk that visits every open maze cell and ends at the exit.

Move a two-leg Manhattan compass among pinholes to collect value under equal-distance moves.

Find a long no-repeat path in a directed graph and score by path-length thresholds.

Find a simple grid path that visits required row intervals in a valid order.