Queen and Pawn vs Rook and Pawn: When the King Reaches the Seventh
White to play and win
PlayThis is the drawn queen-against-rook fortress, with one change: your king starts on d7, on the seventh rank. Black's defence rests on two rules: keep your queen off f8, and stop your h-pawn from advancing safely. The rule to remember: with the attacking king on the seventh or eighth rank, the fortress falls.
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The King on the Seventh Changes the Verdict
White to play and win · Win against perfect defense
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The theory
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The fortress in Grigoriev's position rests on two rules the defender must keep. Move the attacking king and he can no longer keep them.
The exact criterion. The evaluation of the drawn position changes if the white king stands on the seventh or the eighth rank. From d7, White wins.
The break. Qg5+ Kh7 h6, doing exactly the two things Black was supposed to prevent: the h-pawn advances with the queen behind it, and the black king is pulled off g7, the square that made f8 poison for your queen.
The takeaway. In this material a fortress is a set of conditions, not a shape. When you meet a drawn structure, ask which condition would break it, and whether you can put your king where it breaks.
In this drill the win is short and forcing. Find the pawn break and finish cleanly.
Keep going
Adjacent Pawns: Walk the King to g7
Black to play and draw
The Queen Sacrifice That Breaks the Wall
White to play and win
Queen vs Rook
White to play and win
All 19 queen vs rook positionsFollow the full curriculum (free)