Step 1 of 4
White to move · Mate in 1
The kings face each other. Check from the side.
The kings face each other. Check from the side.
With one rook, your king does half the work. Use the rook to cut the enemy king off, then bring your king forward until the two kings face each other with one square between them. Check from the side at that moment. When the kings are not facing each other, make a waiting move with the rook and let the enemy king walk into it.
Every move is checked with an endgame tablebase, which knows the exact result of every position with up to seven pieces. The computer defends perfectly, and if a move throws the result away, the trainer stops and shows you a better one.