The material imbalance in a queen versus pawn ending is big enough that one would think it’s always a win. One beauty of endgames study is that it surprises you often: queen vs pawn has a few fascinating exceptions. Sometimes, despite the incredible imbalance, it’s just draw.
The goals of both parties are clear: the weaker side tries to promote the pawn and the stronger side tries to eliminate the pawn and checkmate the opponent. Interesting positions arise when the pawn is on the last but one rank. Let’s start with a winning position:
Here is the winning plan for the stronger side:
And here is a possible sequence:
The critical position is reached with
8 Qc3+ because it forces the black king
d1 (any other legal move would lose the pawn). What makes this ending
fascinating is that this sequence does not always work. Let’s examine the cases
in which this sequence fails to achieve the goal or, put it differently, let’s
see when the ending is just a draw.
Sometimes pieces or even the stronger king are on the way of the forcing checks. Here is a topical example:
This is a dead draw as there are no useful checks for the stronger side. It’s always interesting to see the smallest change in an endgame position dramatically alters the outcome of a game.
The other exception are rook and bishop pawns. In these positions, the sequence fails to gain a tempo because of stalemate tricks the weaker side can employ to ensure the draw. Let’s look at the critical position with the bishop pawn:
Here black can play
Ka1! and capturing the pawn would result in stalemate.
This effectively prevents white from gaining the necessary tempo to bring the
The concept is similar with the rook pawn:
In this position, black plays
Ka1! hiding behind the pawn and white must move
away the queen from the
b file otherwise the resulting position would be a
While the rook and the bishop pawn can hold a draw, it’s not always true. If the stronger king is close enough, it’s possible to set up a fascinating mating net:
The most important move in the sequence is
4 Kc4!, that’s what allows the
checkmate despite the perfect material balance on the board.
So, let’s recap all cases: