Buy Sudoku Online With Friends PC key

Sudoku Online With Friends is a competitive Sudoku game where you solve a 9x9 grid against another player. You fill empty cells with numbers from 1 to 9 while racing against a timer and your opponent for points.

Duel rules

Each row, column and 3x3 square must contain unique numbers. Both players can see an error mark when a number is placed incorrectly, and incorrect moves earn no points. You earn 1 point for each correctly revealed empty cell. Reveal all eight numbers in a row, column or 3x3 block to awaken a Black Square key and earn 10 bonus points. The first player to score 50% of all possible points wins.

Before each duel, both players place an equal bet in SUDOKU coins, and the winner takes the shared pot. After each match, your Elo Master Rating changes according to the result and your opponent’s rating: beating a stronger opponent earns a larger increase, while losing to them causes only a small decrease. Beating a weaker opponent earns few points, while losing to them can cost you more.

Notes and cascades

You can record private assumptions and guesses in Notes. Move a number to a cell and select Check to add it as a small green number visible only to you. Filling the last number in a row can automatically open it; if that also opens other blocks, they can open in sequence, creating a cascade that reveals several numbers and earns points in one move.