Sudoku Studio

A compact puzzle console in the same dark system-panel style as the rest of the site.

Difficulty: Hard Given cells: 26 Mode: Entry Timer: 00:00
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Board

Select a cell, then use the number pad or keyboard. Notes mode stores candidates in the same square.

Keyboard: arrows move, numbers place values, N toggles notes, Backspace erases, Ctrl/⌘ + Z undoes.

Built as a PHP entry page with a separate JavaScript game loop and all shared CSS in site.css.