Chessopedia: Online Chess Encylopedia


  • Ruy Lopez

    • 2217 Reads
    • | 2217 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

    • 1925 Reads
    • | 1925 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

    • 1783 Reads
    • | 1783 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 »

  • The English Opening

    • 1116 Reads
    • | 1116 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 »

  • En passant

    • 1060 Reads
    • | 1060 Reads

    En passant (from French: "in passing") is a maneuver in chess which is performed after a player moves a pawn two squares forward from its starting position, and an opposing pawn captures it as if it had only moved one square.  En passant may onl... Read More »

  • Zugzwang

    • 822 Reads
    • | 822 Reads

    Zugzwang an intermediate move yeah ZANG  Pronounced "tsoog-tsvung",  Zugzwang (German for "compulsion to move", pronounced [ˈtsuːktsvaŋ]) is a situation found in chess and other games wherein one player is put at a disadvantage because the... Read More »

  • Abbazia Defense

    • 666 Reads
    • | 666 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 »

  • Sicilian Defence

    • 603 Reads
    • | 603 Reads

      The Sicilian Defence is an opening very rich in independent variations to the extent that it is always mentioned along with the mainline variation that followed.Black's purpose of playing 1...c5 is to undermine white's center by taking cont... Read More »

  • King's Indian Defense

    • 538 Reads
    • | 538 Reads

    King's Indian Defense belongs to the Indian Defense family of openings and is characterised by the early fianchetoeing of the black dark-squared bishop on g7. It is a sharp opening and it has always been a very popular choice for black ever ... Read More »

  • Crazyhouse Chess

    • 479 Reads
    • | 479 Reads

    Crazyhouse chess is a chess variant similar to Bughouse chess but played with 2 players and no teams. Each player has a "pocked" or "reserve" for pieces. Every time a piece is captured the capturing player gets a piece of the same type and of thei... Read More »