Chessopedia: Online Chess Encylopedia


  • Ruy Lopez

    • 1784 Reads
    • | 1784 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

    • 1568 Reads
    • | 1568 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

    • 1120 Reads
    • | 1120 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

    • 830 Reads
    • | 830 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 »

  • The English Opening

    • 679 Reads
    • | 679 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 »

  • Abbazia Defense

    • 553 Reads
    • | 553 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

    • 471 Reads
    • | 471 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 »

  • Chess

    • 341 Reads
    • | 341 Reads

    Chess is a two-player board game played on a chessboard, a checkered gameboard with 64 squares arranged in an eight-by-eight grid. Chess is played by millions of people worldwide in homes, urban parks, clubs, online, correspondence, and in... Read More »

  • King's Indian Defense

    • 340 Reads
    • | 340 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 »

  • Sicilian Defence

    • 318 Reads
    • | 318 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 »