About
DIGIGMA is a site for number logic. You play in the browser. Every puzzle has one solution, reached by reasoning — not by guessing.
Six games are live:
- Sudoku — a classic 9×9. Put 1 through 9 in every row, column, and box.
- Binary Puzzle — fill with 0s and 1s. Equal counts, no three identical in a line, unique rows and columns.
- Killer Sudoku — Sudoku plus cages that must sum to the printed totals.
- Futoshiki — place 1–N once in every row and column, respecting the inequalities.
- Kakuro — fill each run with distinct digits 1–9 so they add up to its clue.
- Codebreaker — find a hidden digit code using exact and misplaced clues.
The tone is calm: concentration and deduction, without noise.
There is no advertising, now or later. DIGIGMA is funded by players who choose to support it.
You can try a puzzle without an account. A free account keeps your username, history, and progress on the server — on any device. Usernames can appear on the leaderboard. Email never does.