Крестики-Нолики

Free online tic-tac-toe for Russian players, from 3x3 to 7x7 boards

Крестики-Нолики is a free online tic-tac-toe game that runs directly in the browser with no installation. It targets Russian-speaking players and supports board sizes from the classic 3x3 (three in a row) up to 7x7, where a win requires four in a row horizontally, vertically or diagonally.

You can play locally against a friend on the same device or against a computer opponent with adjustable difficulty. Players can also choose the board size and pick who moves first to suit the desired level of challenge.

The site also includes strategy guides on opening moves and winning techniques, plus a FAQ covering common gameplay questions. The interface is in Russian.