Brain Test 1 Level 261
You must win this, somehow
Remove the O from top right corner and then tap on there to put your X and win the game.

Follow the screen sequence
Use the images as a compact replay of the solving path. The text below each frame explains what should change.

Video walkthrough
Same number in other versions
Brain Test versions can reuse the same level number with a different puzzle. If the screenshot or question does not match your game, switch to the same number in another version or use the nearby level links.
Strategy guide
- 1.Remove the O from the top right corner to create a winning opportunity;
- 2.After removing the O, tap the same spot to place your X and win;
- 3.Understand that you can modify the board by removing opponent pieces to achieve victory.
Common mistakes
- 1.Trying to place X in empty spaces without removing the O first;
- 2.Attempting to win by making three X's in a row without modifying the board;
- 3.Focusing on blocking the opponent instead of altering the existing layout.
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