One grid, no decision stress
No levels to choose, no doubts: today's puzzle is ready and waiting. Ten minutes of focused reasoning with zeros and ones — and your daily thinking moment is done.
Daily binary puzzle
Every day one 8×8 binary puzzle is ready here, calculated from the date — you, your neighbour and your grandchildren all get exactly the same grid. Solve it whenever it suits you and build your streak.
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Why a fixed daily puzzle works
Your streak grows by itself
Every solved day counts towards your streak, with your best streak as the record. Everything stays on your own device — no account, nobody watching.
Compare your time
Because everyone gets the same puzzle, you can put your time next to that of family or friends. A little friendly rivalry keeps you sharp.
Want more? On the binary puzzle page you choose your own level, from 6×6 to 12×12. And the puzzle of the day hub collects all six daily puzzles in one place.
Frequently asked questions about the daily binary puzzle
When does the new puzzle appear?
Every day at midnight (your local time). Until then you can keep playing today's puzzle.
Is the daily puzzle the same for everyone?
Yes. The puzzle is calculated from the date, so everyone gets the same 8×8 grid — ideal for comparing times.
What happens to my streak if I miss a day?
Your current streak starts over, but your best streak remains as the record. The binary puzzle streak is separate from the other daily puzzles.
Why is the daily puzzle always 8×8?
That size is big enough for real puzzling and small enough for a daily moment. Want it easier or tougher? The regular play page offers four levels.