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some pawn exchanges may be necessary to open files, but keep pawns on both sides of the board; try to keep the position unbalanced. A passed pawn almost immediately becomes a winning advantage. [15] If the minor piece has an extra pawn (i.e. one pawn for the exchange), the rook should win, but with difficulty.
Exchanges can appear in connection with practically any kind of attacking or defensive chess tactic or combination of tactics. Such tactics can involve checkmating the opponent, avoiding checkmate, gaining a material advantage, avoid losing more material than necessary, helping a pawn to promote, preventing an opponent's pawn promotion, or setting up a draw by any of a couple methods.
A game can end in various ways besides checkmate: a player can resign, and there are several ways a game can end in a draw. While the exact origins of chess are unclear, modern rules first took form during the Middle Ages. The rules continued to be slightly modified until the early 19th century, when they reached essentially their current form.
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 ...
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.
A rook pawn or knight pawn is a theoretical draw if the defending king is in front or near the pawn or if the king is in the corner opposite the pawn's promotion square. A knight pawn has more practical winning chances than a rook pawn. A bishop pawn or central pawn is a win if the defending king is not in front of the pawn.