The opposition is the situation where the kings face each other with one square between them, and the side NOT to move holds it. In pawn endings it decides which king has to give way.
Here White has the king on f6 and a pawn on f5; Black has the king on f8. White to move, and the position is won (per the tablebases): the king in front of its own pawn takes the opposition, pushes the enemy king back and escorts the pawn through.
«King in front of the pawn plus the opposition» is the key to winning the simplest pawn endings. If it is the defending king that gets in front with the opposition, the result is usually a draw.
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 position where the kings stand on the same line with one square between them and the opponent is to move. Whoever has to move gives way and lets the enemy king through to the key squares.
It decides whether the pawn gets through. The stronger side takes the opposition in order to walk round the enemy king and occupy the key squares in front of the pawn.
No. A king in front of its pawn on the sixth rank wins whoever is to move; on the fifth rank it only wins with the opposition.
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