[Event "Chess Position Trainer"] [Site "Chess Position Trainer"] [Date "????.??.??"] [Round "?"] [White "KBN vs K"] [Black "The Tuck Method"] [Result "*"] [Annotator "Fryer,David William"] [SetUp "1"] [FEN "7k/8/5K2/4N3/4B3/8/8/8 w - - 0 1"] [PlyCount "35"] [SourceDate "2015.09.24"] 1. Nf7+ {[%csl Rh8][%cal Rh8a8] We have driven the black King into the opposite coloured corner to our Bishop. Now the task is to drive it into the other corner.} Kg8 2. Bf5 {[%csl Gf5,Yf6,Rf7] Traffic Lights - Red - Yellow - Green} Kf8 {[%csl Gf5,Yf6,Rf7][%cal Yf6e6,Ye6d6,Yd6c6,Yc6b6,Rf7e5,Re5d7,Rd7c5, Rc5b7] The order to consider moving the pieces in is; 1. The Knight which will travel in a W shape across the board. 2. The King which will travel in a straight line across the 6th rank. 3. The Bishop which will be used to restrict the black King's movement.} 3. Bh7 {[%csl Gf6,Gf7,Gf8,Gg7,Gh7][%cal Gf5h7] The KEY pattern to remember - which will repeat as we drive the king across the board.} Ke8 {[%cal Rf8e8]} 4. Ne5 {[%cal Rf7e5] The knight begins it journey along its W path.} Kf8 {[%cal Re8f8] black's most common and natural move as he tries to avoid being pushed along.} (4... Kd8 {[%cal Re8d8] The best try by Black. He runs with his King trying to escape white's net.} 5. Ke6 {[%cal Yf6e6] We cannot move the Knight along its W path so we move our No. 2 piece the King.} Kc7 {[%cal Rd8c7]} (5... Kc8 {[%cal Rd8c8]} 6. Nd7 {[%cal Re5d7]} Kb7 {[%csl Rb6][%cal Rc8b7,Rb7a6]} 7. Bd3 {[%csl Ga6][%cal Gh7d3]} Kc6 {[%cal Rb7c6]} 8. Be2 {[%csl Gb5,Rb6,Rc5][%cal Gd3e2]} Kc7 {[%cal Rc6c7]} 9. Bf3 {[%csl Rb6,Gb7,Rb8,Gc6][%cal Ge2f3]} Kd8 {[%cal Rc7d8]} 10. Kd6 {[%cal Ye6d6]} Ke8 {[%cal Rd8e8]} 11. Bh5+ {[%cal Gf3h5]} Kd8 {[%cal Re8d8]} 12. Bf7 { [%csl Gd6,Gd7,Gd8,Gf7][%cal Gh5f7] The KEY}) 6. Nd7 {[%csl Rb6,Rc5][%cal Re5d7] We move our Knight along the W and at the same time cover the important b6 and c5 squares.} Kc6 {[%csl Rb6,Rc5,Gh7][%cal Rc6b5,Rc7c6] The black King tries to escape via b5.} (6... Kb7 {[%csl Rb6][%cal Rb7a6,Rc7b7] Black attempts to escape via a6.} 7. Bd3 {[%csl Ga6,Rb6][%cal Gh7d3] We move the Bishop to stop the black King's escape.} Kc6 {[%cal Rb7c6]} 8. Be2 {[%csl Gb5,Rb6,Rc5][%cal Gd3e2] We cannot move our Knight or King along their chosen paths so we waste a move with the Bishop.} Kc7 {[%cal Rc6c7]} 9. Bf3 {[%csl Rb6,Gb7,Rb8,Gc6] [%cal Ge2f3] The Bishop tightens the net around the black King.} Kd8 {[%cal Rc7d8]} 10. Kd6 {[%cal Ye6d6]} Ke8 {[%cal Rd8e8]} 11. Bh5+ {[%cal Gf3h5]} Kd8 { [%cal Re8d8]} 12. Bf7 {[%csl Gd6,Gd7,Gd8,Ge7,Gf7][%cal Gh5f7] The KEY}) 7. Bd3 {[%csl Gb5,Rb6,Rc5][%cal Gh7d3] We move the Bishop to prevent the Black King's escape.} Kc7 {[%csl Rb6,Rc5][%cal Rc6c7]} 8. Be4 {[%csl Rb6,Gb7,Rb8,Gc6][%cal Gd3e4] The Bishop tightens the net around the black King.} Kd8 {[%cal Rc7d8]} 9. Kd6 {[%cal Ye6d6] The King can now continue along his path.} Ke8 {[%cal Rd8e8]} 10. Bg6+ {[%cal Ge4g6]} Kd8 {[%cal Re8d8]} 11. Bf7 {[%csl Gd6,Gd7,Gd8, Ge7,Gf7][%cal Gg6f7] The KEY.}) 5. Nd7+ {[%cal Re5d7] The Knight continues along its W path.} Ke8 {[%cal Rf8e8]} 6. Ke6 {[%cal Yf6e6] The Knight has made 2 moves so the King starts his journey.} Kd8 {[%cal Re8d8]} 7. Kd6 {[%cal Ye6d6] The King makes his second move along his path.} Ke8 {[%cal Rd8e8]} (7... Kc8 {[%cal Rd8c8]} 8. Bg6 {[%cal Gh7g6] We have played two knight moves followed by two king moves so now the Bishop comes into play} Kb7 {[%csl Rb6] [%cal Rc8b7,Rb7a6] Black attempts to escape via a6.} (8... Kd8 {[%cal Rc8d8]} 9. Bf7 {[%csl Gd6,Gd7,Gd8,Ge6,Ge7,Ge8,Gf6,Gf7,Gf8][%cal Gg6f7] The KEY}) 9. Bd3 {[%csl Ga6,Rb6][%cal Gg6d3,Rb7c8] We move the Bishop to stop the black King's escape.} Kc8 {[%cal Rb7c8]} 10. Nc5 {[%csl Rb7][%cal Rd7c5]} Kd8 {[%cal Rd8e8, Rc8d8] Black attempts to escape via e8} 11. Bg6 {[%csl Ge8][%cal Gd3g6] We move the Bishop to stop the black King's escape.} Kc8 {[%cal Rd8c8]} 12. Bf7 { [%cal Gg6f7] We cannot play Nb7 and Kc6 would be a mistake as the black King could double back on itself and escape via e7 so we move the Bishop for a second time.} Kd8 {[%cal Rc8d8]} (12... Kb8 {[%cal Rc8b8]} 13. Kc6 {[%cal Yd6c6]} Kc8 {[%cal Rb8c8]} (13... Ka7 {[%cal Rb8a7]} 14. Be6 {[%csl Ra6][%cal Gf7e6] We cannot play Kc6 and Nb7 would allow Ka6 so we move the Bishop} Kb8 { [%cal Ra7b8]} 15. Kb6 {[%cal Yc6b6]} Ka8 {[%cal Rb8a8] The King is in the corner and this time its mate in 3} 16. Bd7 {[%cal Ge6d7]} Kb8 {[%cal Ra8b8]} 17. Na6+ {[%cal Rc5a6]} Ka8 {[%cal Rb8a8]} 18. Bc6# {[%cal Gd7c6] Checkmate !!} ) 14. Nb7 {[%cal Rc5b7]} Kb8 {[%cal Rc8b8]} 15. Kb6 {[%cal Yc6b6]} Kc8 { [%cal Rb8c8]} (15... Ka8 {[%cal Rb8a8]} 16. Be6 {[%cal Gf7e6]} Kb8 {[%cal Ra8b8]} 17. Bd7 {[%csl Gb6,Gb7,Gb8,Gc7,Gd7][%cal Ge6d7] The KEY}) 16. Be6+ { [%cal Gf7e6]} Kb8 {[%cal Rc8b8]} 17. Bd7 {[%csl Gb6,Gb7,Gb8,Gc7,Gd7][%cal Ge6d7] The KEY}) 13. Nb7+ {[%cal Rc5b7] The Knight completes his W path} Kc8 { [%cal Rd8c8]} 14. Kc6 {[%cal Yd6c6] Now its the King's turn} Kb8 {[%cal Rc8b8]} 15. Kb6 {[%cal Yc6b6] The King completes his journey} Kc8 {[%cal Rb8c8]} 16. Be6+ {[%cal Gf7e6] Two Knight moves followed by two King moves so its the turn of the Bishop} Kb8 17. Bd7 {[%csl Gb6,Gb7,Gb8,Gc7,Gd7][%cal Ge6d7] The Key}) 8. Bg6+ {[%cal Gh7g6] Finally the Bishop comes into play.} Kd8 {[%cal Re8d8]} 9. Bf7 {[%csl Gd6,Gd7,Gd8,Ge7,Gf7][%cal Gg6f7] The Bishop moves to create the KEY pattern. Notice we have played two Knight moves two King moves and two Bishop moves.} Kc8 {[%cal Rd8c8]} 10. Nc5 {[%cal Rd7c5] and we start the series of moves again.} Kd8 {[%cal Rc8d8]} (10... Kb8 {[%cal Rc8b8]} 11. Kc6 {[%cal Yd6c6]} Kc8 {[%cal Rb8c8]} 12. Nb7 {[%cal Rc5b7]} Kb8 {[%cal Rc8b8]} 13. Kb6 { [%cal Yc6b6]} Kc8 {[%cal Rb8c8]} (13... Ka8 {[%cal Rb8a8]} 14. Be6 {[%cal Gf7e6]} Kb8 {[%cal Ra8b8]} 15. Bd7 {[%csl Gb6,Gb7,Gb8,Gc7,Gd7][%cal Ge6d7] The KEY}) 14. Be6+ {[%cal Gf7e6]} Kb8 {[%cal Rc8b8]} 15. Bd7 {[%csl Gb6,Gb7,Gb8, Gc7,Gd7][%cal Ge6d7] The KEY}) 11. Nb7+ {[%cal Rc5b7]} Kc8 {[%cal Rd8c8]} 12. Kc6 {[%cal Yd6c6]} Kb8 {[%cal Rc8b8]} 13. Kb6 {[%cal Yc6b6]} Kc8 {[%cal Rb8c8]} (13... Ka8 {[%cal Rb8a8]} 14. Be6 {[%cal Gf7e6]} Kb8 {[%cal Ra8b8]} 15. Bd7 { [%csl Gb6,Gb7,Gb8,Gc7,Gd7][%cal Ge6d7] The KEY}) 14. Be6+ {[%cal Gf7e6]} Kb8 { [%cal Rc8b8]} 15. Bd7 {[%csl Gb6,Gb7,Gb8,Gc7,Gd7][%cal Ge6d7] The KEY} Ka8 { [%csl Ra8][%cal Rb8a8] The black King has been forced into the corner and its checkmate in three moves.} 16. Nc5 {[%cal Rb7c5,Rc5a6] We have to cover the b8 square so the Knight travels to c5 then a6.} Kb8 {[%cal Ra8b8]} 17. Na6+ { [%cal Rc5a6]} Ka8 {[%cal Rb8a8]} 18. Bc6# {[%cal Gd7c6] Checkmate !!} *