Battle Sudoku guide

The same Sudoku board for both players. Fill it in correctly faster than your opponent to win the race, with every mistake costing you time.

How to play Battle Sudoku

  • 2 players
  • 9x9 grid
  • 3 difficulties

Goal

Solve the same sudoku grid faster than your opponent.

How to play

  • Both players receive an identical puzzle at the same time.
  • Fill the nine-by-nine grid so every row, column and three-by-three box holds each digit once.
  • Your opponent’s progress is visible as you go - which cells they have filled, never the values - so you can see how far ahead or behind you are.
  • Notes let you pencil candidate digits into a cell; the lobby can start you with them auto-filled, and you can toggle that during the match.
  • First to a correct completed grid wins.

Technique

Under time pressure, scan for hidden singles - a digit that can only go in one square of a row, column or box - before pencilling in candidates everywhere. Full candidate marking is thorough but slow, and slow loses races.

Match format

  • Real-time head-to-head, in a private lobby or through Find a game.
  • The shared grid means the result is a pure speed comparison.