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Playground

Things to poke at

Small experiments that don't warrant a case study. Everything here is keyboard-playable.

Puzzle

Mini sudoku

A 4×4 sudoku with a freshly generated, guaranteed-unique puzzle each round. Move with the arrow keys, type 1–4 to fill a cell, and Backspace to clear one. Conflicts highlight as you go.

Also reachable by typing sudoku in the terminal.