All challenges

Remove numbered boxes from stacks in order while minimizing move energy.

Choose powered stations, cables, and radio strengths to cover residents at low cost.

Reconstruct a toroidal character matrix that contains many observed strings.

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

Cut a cake with straight lines to create pieces matching requested strawberry counts.

Choose a subset whose sum is as close as possible to a target.

Swap adjacent balls in a triangular pyramid to improve ordering.

Emit a simple valid move script for the pet shelter simulation instance.

Produce source-grid routes for noisy path-feedback instances.

Select delivery requests and a route that completes them with low travel time.

Emit a deterministic tilt sequence for the candy board source instance.

Place non-overlapping advertisement rectangles to satisfy requested locations and areas.