With same-coloured bishops an extra pawn usually wins, but there are drawn exceptions here too: if the defending bishop blockades the passer firmly and its own king supports it, the stronger side cannot break through.
Here White has the king on g5, the bishop on h2 and an extra pawn on f5; Black has the king on c6 and the bishop on c3. Black to move, and it is a draw (per the tablebases): the black bishop holds the f5 pawn along the diagonal and it cannot be pushed through.
The lesson: even favourable endings have to be checked for a blockade. A single well-placed bishop can stop a passer and draw a pawn down.
Drag a piece onto the board, or click a piece and then click the squares. The cross beside the pieces sweeps every piece of that colour off the board, and a single piece can be dragged off the edge.
The pieces will be arranged into the chosen pattern.
It is the mating side to move. Find mate in one.
Openings, endgame positions and breakthrough studies - the set-up appears on the board.
The queening square is in the corner: the king cannot be pushed out of it, and the bishop controls only one approach diagonal.
Directly in front of the pawn, ideally in the queening corner - from there it cannot be dislodged.
Only through zugzwang or a second pawn on the other wing - otherwise the position is drawn.
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