Checker partida single player

Se dispara al finalizar el timer.
Si el orden es correcto dispara ventana ganadora.
Si el orden es incorrecto, inicia nuevamente timer de 10 segundos o dispara ventana perdedora.

The issue describes the single-player end-of-timer behavior but names no files or tests. Start by locating the single-player checker and timer handling, then run the game to verify that a correct order shows the winning window and an incorrect order restarts the 10-second timer or shows the losing window.

Written by the indexing model from the issue text.