Kling and Horwitz: When Connected Pawns Only Draw
White to play and draw, after Kling and Horwitz, 1851
PlayYou have two connected passed pawns, but his king already sits in front of them on g6. This is the most important drawn position with connected pawns: once the defending king blocks them this close to the edge, there is not much to be done. You can try to drive the king away, and with exact defence it comes back. The rule: against a king planted in front of the pawns, do not force anything, keep your rook safe, and take the draw.
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Kling and Horwitz: The King Blockades
White to play and draw · Hold the draw against perfect play
Waking the engine…
The theory
Watch the method: press play to see the winning idea run, or step through it move by move.
Only two moves lose here: Rb6+ and Ra4 both simply give up your rook. Rb6+ is met by Rxb6.
Connected passers are strong because they advance. A king planted in front of them stops that, and the whole advantage evaporates.
The blockade. With the defending king on the square ahead of the pawns, the g-pawn cannot move and the h-pawn cannot advance without being lost. A lone rook cannot drive that king away.
Kling and Horwitz, 1851. This is the reference position for the whole theme. If you can reach it as the defender you draw, and if you allow it as the attacker you have thrown away the win.
A friend of the edge. This blockade needs the rim. Slide the same position toward the centre and the attacker breaks it with a rook trade into a won pawn ending. The blockade holds when the board runs out beside the pawns, or when one of the attacking pieces is passive; in the open centre, connected pawns usually win.
In this drill you play the stronger side and learn to see the drawn blockade for what it is instead of pushing into a loss.
Keep going
The King March and the Zugzwang Squares
White to play and win
The Rook at the Side of the Pawns
Black to play and win
The Exchange Threat and the Rook Sacrifice
Black to play and draw
All 96 rook endgames positionsFollow the full curriculum (free)