Xtreme Tic Tac Toe Solver

Fill every white square with X or O without ever making three identical symbols in a row. Black squares block the line. Includes horizontal, vertical, and diagonal lines.

Puzzle grid

Rows

Columns

Choose a cell:

X O blocked solved cellTap a cell to place your chosen mark

A new random puzzle will load automatically.

Import from a screenshot

Puzzle screenshot

Automatically detects a straight, high-contrast square grid and tries to recognize X, O, and black cells. Review the imported clues before solving.

For best results, use a clear screenshot containing the entire grid, with straight black grid lines. You can always correct mistakes by tapping cells.

Solving rules

Include diagonal lines

All white cells must contain X or O.
Three consecutive Xs or Os cannot appear in a straight line.
Black squares break horizontal, vertical, and diagonal runs.
Existing X and O clues stay fixed.

A puzzle may allow more than one correct completion. The solver shows one solution and tells you if it finds another.

Other ways to enter puzzles

Paste rows containing X, O, . (empty) or # (black). Spaces are ignored.