Same Fortress, the Move Decides
White to play and win
PlayThe exact same position is a draw or a win depending only on who moves. With the tempo yours, the queen breaks into the shelter and wins.
No signup needed. The opponent never gives up, and every mistake gets explained.
Same Fortress, the Move Decides
Win against perfect defense
Waking the engine…
The theory
Some fortresses live or die on a single tempo. This position is a draw for the side to move and a win for the other, a pure mutual zugzwang.
Use the move. Holding the tempo, you force the defender's rook or king to a square the fortress cannot afford, opening a path for the queen.
Then break in. Combine queen, king, and passed pawn to invade the shelter and convert. The whole win rests on not wasting the move.
This drill teaches how narrow the fortress boundary can be. Keep the defender in zugzwang and the win appears.