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In the ending of a rook and pawn versus a rook, where the pawn is a knight pawn (b- or g-file), the defending king is in front of the pawn, but the defender cannot get his rook to the third rank for the drawing Philidor position, the defending rook draws on its first rank but loses if it is attacking the pawn from behind. [22] [23]
Paradoxically, checkmate with two knights sometimes can be forced if the weaker side has a single extra pawn, but this is a curiosity of little practical value (see two knights endgame). Pawnless endgames are a rarity, and if the stronger side has even a single pawn, an extra knight should give them an easy win. A bishop can trap (although it ...
A pawn may move by vertically advancing to a vacant square ahead. The first time a pawn moves, it has the additional option of vertically advancing two squares, provided that both squares are vacant. Unlike other pieces, the pawn can only move forwards. In the second diagram, the pawn on c4 can move to c5; the pawn on e2 can move to either e3 ...
A pawn is referred to by the file on which it stands: a rook pawn is on the a- or h-file, a knight pawn is on the b- or g-file, a bishop pawn is on the c- or f-file. A central pawn is a queen pawn or a king pawn, on the d- or e-file. When designating a position as a win or a draw, optimal play by both sides is assumed.
It cannot move or capture like a knight to the last rank, thus the black king on d8 is not in check. The white knight on b7 does not check the king either and cannot capture the pawn on a5. The white queen cannot take the black knight on c3. The white king is not in check by the black knight on c2.
If the pawn is a central pawn or knight pawn (i.e. on the b, d, e, or g-file), the queen wins easily, except for a few unusual positions. In the position on the right, White wins. It takes several moves, but it is not difficult. 1... Ke3. Black threatens to queen the pawn. White prevents this by forcing the black king in front of the pawn. 2 ...
guaranteeing the e-pawn's promotion. The passed pawn's value is well worth the sacrifice of the bishop in order to clear its path to promotion. The only pieces preventing the e-pawn's promotion are the black queen and knight, and once they are gone, the pawn has a free path to promote. Black's pawns are also helpless to stop it. [1]
The camel (Golomb called it the cook) has a kind of extended knight's move: it goes one diagonal and two straight. With this move, it can jump over other pieces (like a knight jumps), but the camel takes by moving to the square on which the enemy piece is located. Capturing is not mandatory.