PvP ArenaSudoku
Same puzzle, race to the first correct grid. The winner takes both stakes.
Same puzzle, first grid winsBoth players get the same puzzle. The first to fill every cell correctly takes the round; mistakes aren’t pointed out.
Hidden digitsYou see where your opponent has filled a cell, never what with. Notes and the conflict marks stay in your browser.
Easy, Medium or Hard5, 8 or 12 minutes, best of 1 or 3. When the clock runs out, more correct cells wins; a tie is replayed with a new puzzle.