You have conquered the grid.
Fill the 9×9 grid so that every row, column, and 3×3 square box contains the numbers from 1 to 9 without repetition.
Each horizontal row and vertical column must contain every digit 1 through 9 exactly once.
Each of the nine 3×3 sub-grids outlined in thick borders must also contain 1 through 9.
Press N or click Notes to scribble candidate digits when a cell has multiple possibilities.
Paste an 81-character puzzle string (using digits 1-9 and 0 or '.' for blanks), or click "Load Empty Grid" to enter numbers manually.
Pass & play on this device. Take turns placing numbers. Earn combo points for completing rows, columns, and 3x3 boxes!
Challenge a friend across two devices. Race on the exact same board in real-time with zero-latency WebRTC peer connections!
Share this code or link with your friend to join!
Supreme mastery of the numbers.