开局简单经典开局 1.e4 e5 2.Nf3 Nc6 3.Bc4关键着法1. e42. e53. ♘f34. ♞c65. ♗c487654321♜♝♛♚♝♞♜♟♟♟♟♟♟♟♞♟♗♙♘♙♙♙♙♙♙♙♖♘♗♕♔♖abcdefghr1bqkbnr/pppp1ppp/2n5/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 3 3← 国际象棋学习📖 Article西西里防御 →