King and pawn endgame
A king and pawn endgame is an ending in which only kings and pawns remain, so the result depends on promotion races, king placement, opposition, and exact counting of moves.
Also called: pawn endgame
With no other pieces left, the kings and pawns carry the whole game, and every move counts. These endings are often the most precise in chess, because a single tempo decides whether a pawn promotes or is stopped. The king must be active, so bring it toward the center and toward the pawns that matter. Three tools come up constantly: the opposition, which decides who must give way when kings face each other; key squares, which tell you where your king must stand to guarantee that a pawn promotes; and the rule of the square, which tells you whether a king can catch a runaway pawn. Pawn endings also reward an eye for breakthroughs and for the creation of a passed pawn on the wing where the opponent king is far away. Many games land here when the last pieces come off, and that trade cannot be taken back, so work out the pawn ending to its end before you enter it. Also remember the exceptions: an edge pawn on the a or h file is much harder to win with, since the defending king can reach the corner.
It sits close to Diagonal opposition. Diagonal opposition is the standoff in which the two kings sit on the same diagonal with exactly one empty square between them, so the king that has to move must give ground.
Compare it with Knight endgame. A knight endgame is an ending in which each side has a knight and pawns, where king activity and the pawn count usually decide the result, and where the slow, short-range knight makes the plan harder than in a bishop ending.
Also worth reading is Same-colored bishops. Same-colored bishops are bishops that move on the same shade of squares, so they can challenge, exchange and defend against each other, and an extra pawn is usually much easier to convert than with opposite colors.
If "King and pawn endgame" has cost you half a point, a first lesson is a good place to find the pattern behind it: George Li goes through your games and builds a plan.
Related terms
Opposition is a standoff between the two kings on one file or rank with a single empty square between them; whoever does not have to move holds it, because the other king must give up ground.
Key squares are the target squares for the attacking king in a pawn ending: once it reaches one while its pawn is safe, the pawn promotes by force, no matter whose move it is.
The rule of the square is a shortcut for a lone pawn racing an enemy king: draw a square from the pawn's square up to its promotion square, and the king catches the pawn only if it stands inside or can step in.
Triangulation is a way for a king to hand the move to the opponent: it makes a three-move loop over neighboring squares and returns to its starting square, while the enemy king, with less room, cannot copy the loop.
A passed pawn has a clear road to promotion as far as enemy pawns are concerned: none stands ahead of it on its own file or the two neighboring files, so the opponent must spend a piece or the king to stop it.
King activity describes how freely a king can take part in the endgame, by centralizing, attacking enemy pawns and supporting its own, and the more active king frequently decides otherwise equal positions.
Guides that go further
What to decide first, the questions to ask, what a first lesson should show and the red flags to avoid.
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A game review, a read on your level and a written study plan from George Li.
Want to spot this in your own games?
A first lesson starts with your games: George reviews them and builds a study plan around what he finds.