Initial setup for pawn and move: Black starts without the f-pawn; the weaker player (White) moves first.
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Initial setup for queen rook in exchange for the opponent's queen knight: White starts without the a-rook; Black, on the other hand, removes their b8-knight and moves their queen rook to b8. The stronger player (White) moves first.
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Handicaps (or "odds") in chess are handicapping variants which enable a weaker player to have a chance of winning against a stronger one. There are a variety of such handicaps, such as material odds (the stronger player surrenders a certain piece or pieces), extra moves (the weaker player has an agreed number of moves at the beginning of the game), extra time on the chess clock, and special conditions (such as requiring the odds-giver to deliver checkmate with a specified piece or pawn). Various permutations of these, such as "pawn and two moves", are also possible.
Handicaps were quite popular in the 18th and 19th centuries, when chess was often played for money stakes, in order to induce weaker players to play for wagers. Today handicaps are rarely seen in serious competition outside of human–computer chess matches. As chess engines have been routinely superior to even chess masters since the late 20th century, human players need considerable odds to have practical chances in such matches – as of 2024, approximately knight odds for grandmasters.[1]