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Chessopedia: Online Chess Encylopedia

  • Ruy Lopez

    • 1773 Reads
    • | 1773 Reads

    Opening: Ruy Lopez (Spanish)ECO: C60ECO Variations: C60 - C99Type: King's Pawn GamePGN: 1. e4 e5 2. Nf3 Nc6 3.Bb5FEN:  r1bqkbnr/pppp1ppp/2n5/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 3 3 The Ruy Lopez (also known as the Spanish Opening) is a ches... Read More »

  • Scandinavian Defense

    • 1561 Reads
    • | 1561 Reads

    The Scandinavian Defense (also known as the Center Counter) is the chess opening characterized by the first moves 1.e4 d5. Although played by quite a few grandmasters over the years, the Scandinavian is rarely played at the highest levels of ... Read More »

  • Mathematics and chess

    • 1109 Reads
    • | 1109 Reads

    The number of possible chess positions after White’s first ply move is 20 (16 pawn moves and 4 knight moves).  There are 400 possible chess positions after two ply moves (first ply move for White followed by first ply move for Black).  Th... Read More »

  • En passant

    • 823 Reads
    • | 823 Reads

    uuu Read More »

  • The English Opening

    • 647 Reads
    • | 647 Reads

    This Chess opening involves the first move c4, (called The English Opening because a group of English players in around the 1890's often played it, including Howard Staunton), it is played as one of the main opening choices for white- an alternati... Read More »

  • King's Gambit

    • 635 Reads
    • | 635 Reads

    h Read More »

  • Abbazia Defense

    • 552 Reads
    • | 552 Reads

    A King's Gambit Accepted variation (1.e4 e5 2.f4 exf4 3.Nf3 d5) (ECO classification - C36).  The name comes from a tournament, Abbazia 1912, in which all the games had to be a King's Gambit Accepted.  The event was won by Rudolf Spielmann,  Ab... Read More »

  • Zugzwang

    • 462 Reads
    • | 462 Reads

    Pronounced "tsoog-tsvung", Zugzwang is a German word meaning "obligation to move".  The term is used for a position in which whoever has the move would obtain a worse result than if it were the opponent’s turn to play. A player is said to b... Read More »

  • Chess

    • 341 Reads
    • | 341 Reads

    Chess is a world-famous game played between two players using 32 pieces (16 each of two distinct colors) on a 64-square board of alternating colors (black and white, or, most commonly, light and dark). The earliest known ancestor of modern chess ... Read More »

  • King's Indian Defense

    • 333 Reads
    • | 333 Reads

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