Engineered for the mind
Slow down. See the pattern.
Sudoku solved the way the mind prefers — positional patterns, not keypad speed. A shared daily 6×6, unlimited 4×4 play, and a meditative practice. Free.
Start here · Unlimited
| 1 | 2 | ||
| 4 | 1 | ||
| 3 | |||
| 2 |
Unlimited 4×4 play
Warm up on the small grid, then meet the shared daily 6×6 below.
The Daily 6×6
One puzzle a day — everyone plays the same.
One shared grid each day. Free players all solve the same 6×6 together — no per-player database needed.
Played like pencil and paper.
No keypad, no guessing. You mark position with dots and build the answer from the spatial pattern — a click’s effect depends on the mode you are in.
- Dot — note where a candidate can live
- Cycle Dot / Expose / Color as the puzzle asks
- A wrong exposure fades and the puzzle restarts — learn the pattern
| 5 | 3 | 6 | |||
| 4 | 1 | ||||
| 6 | 1 | ||||
| 5 | 3 | ||||
| 4 | 6 | 2 | |||
| 2 |
Today’s shared grid — solvable by pattern, not guesswork.
Unlimited 4×4
Warm up on the small grid.
Runs entirely in your browser — generated as you play, no account needed to start.
Your first practice, and your daily rhythm.
Every 4×4 generates fresh in your browser — play as many as you like, whenever you like, with the same quiet, no-keypad method as the daily puzzle.
Three ways to notate.
- Dot — note candidate positions
- Expose — reveal a placement
- Color — your own map of the pattern
You control the mode. The puzzle never fills itself.
Join the practice
A free account is all you need.
Sign up free — choose a name and an avatar. No card, no trial ticker.
Free
Today’s puzzle, every day.
The shared daily 6×6, unlimited 4×4 play, and a guided onboarding — everything here is free and stays free.
Daily 6×6 library
The archive of shared grids.
Logged-in members can pick past daily 6×6 puzzles from a growing library selected from the database.
Ultimate · $4/month
Play without limits.
Unlimited play from a curated puzzle library — difficulty rated by each puzzle’s innate characteristics — with progressive therapy-grade training.
One square at a time