[Event "?"] [Site "?"] [Date "1913.??.??"] [Round "?"] [White "Hey"] [Black "?"] [Result "1/2-1/2"] [Annotator "Hey"] [SetUp "1"] [FEN "7k/7P/6K1/p7/P2N4/6b1/8/8 w - - 0 1"] [PlyCount "2"] [EventDate "1913.??.??"] [SourceVersionDate "2023.03.19"] {Correspondence Squares:- Knight Bishop c6 : c7 e6 : e7,h4 f5 : f4,f8 f3 :f4} 1. Nc6 Bc7 {[%csl Yd8,Ye5] And if the initial position was black to move he should have played Bd6! Black's Bishop needs to be on the h2-b8 /^ but it also needs to keep the possibility to goto e7 or h4, and since it already stands on the g3 square , the only other square that it can goto is d6!} 1/2-1/2 [Event "?"] [Site "?"] [Date "1946.??.??"] [Round "?"] [White "Bondarenko"] [Black "?"] [Result "1/2-1/2"] [Annotator "HP"] [SetUp "1"] [FEN "8/8/6k1/B5Pp/6pK/6P1/8/n7 w - - 0 1"] [PlyCount "27"] [EventDate "1946.??.??"] [SourceVersionDate "2023.03.19"] {Corresponding Squares Knight : Bishop c2 : f2 d3,b3 :c3 e4,c4,f7 : f4 c6,e6 : f6 d5,b5 :c5 e8,a5,c5,d8 : e5 a7: e7,d4 c7: d4 c3: d6,e3 [#]} 1. Be1 $1 { The Bishop needs to able to come to c3 or f2} Nc2 2. Bf2 Na3 3. Be3 Nc4 4. Bf4 Na5 5. Be5 Nc6 6. Bf6 Na7 7. Be7 (7. Bd4) 7... Nb5 8. Bc5 Nc7 9. Bd4 Nd5 10. Bc5 Nc3 11. Bd6 (11. Be3) 11... Ne4 12. Bf4 Nc5 13. Be5 Nb3 14. Bc3 {The Bishop was able to prevent the Knight from reaching 11 squares!} 1/2-1/2 [Event "23rd ch-EUR Indiv 2023"] [Site "Vrnjacka Banja SRB"] [Date "2023.03.07"] [Round "5.11"] [White "Kourkoulos Arditis, Stamatis"] [Black "Svane, R...."] [Result "1-0"] [ECO "E04"] [WhiteElo "2520"] [BlackElo "2620"] [Annotator "Sundararajan Kidambi"] [PlyCount "137"] [EventDate "2023.03.03"] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. a4 b5 10. axb5 cxb5 11. Qg5 O-O 12. Qxb5 Ba6 13. Qa4 Qb6 14. O-O Qxb2 15. Nbd2 Bb5 16. Nxc4 Bxa4 17. Nxb2 Bb5 18. Ne5 Ra7 19. Nbc4 Nfd7 20. Nxa5 Bxe2 21. Rfe1 Bb5 22. Reb1 Nxe5 23. dxe5 Bd7 24. Rc1 h6 25. f4 Bb5 26. Be4 Rd7 27. Rc3 Ra7 28. Rc5 Be2 29. Kf2 Nd7 30. Rcc1 Bg4 31. Nc6 Rxa1 32. Rxa1 Nc5 33. Bc2 Kh8 34. Ra5 Nd7 35. Ra7 Nb6 36. Be4 g6 37. Ke3 Kg7 38. Kd4 Rc8 39. Kc5 Nd5 40. Kd6 Nc3 41. Kd7 Rf8 42. Bg2 Bf5 43. Ra3 Be4 44. Rxc3 Bxg2 45. Nd8 Be4 46. h4 h5 47. Ke7 Bd5 48. Rc8 Rg8 49. Rb8 Rh8 50. Rb2 Rf8 51. Rb4 Bf3 52. Rb3 Be4 53. Rb8 Kg8 54. Nc6 Rxb8 55. Nxb8 Kg7 56. Nd7 {Corresponding Squares: Knight : Bishop d7: b7 b6:a6 c5:d5 c3:d3 d3:f3 f2: f5,g2 c1: d1 a2: c2} Bb7 $1 57. Nb6 Ba6 $1 58. Na4 Bb5 $2 {It is obvious that White wins the game if he reaches d6, d8 or g5 in order to win Black's f-pawn. This in turn lets us search for preventing the Knight from reaching the allied squares which has access to these squares, namely f3,h3,e4,c4,b5,b7, c8 and e8. However, this position also has a slightly non obvious key square. If White's Knight reaches the d4-square, the game is over. This is because, from d4 the Knight can jump to the key squares b5,c6 and f3 all three of which is impossible for the Bishop to control! This also means that White's Knight cannot be allowed to the squares b3,c2 and e2 in addition to the earlier key squares that were discussed. If Black understands this mapping the corresponding squares becomes easier.} (58... Bc4 $1 59. Nc5 {When White's Knight reaches this square, Black's Bishop has to be on d5, in order to control both b3 and b7!} (59. Nc3 Bd3 $1 60. Nd1 (60. Na2 Bc2 $1) 60... Bf1 (60... Be4 61. Nf2 Bf5) 61. Nf2 Bg2 $1 62. Nd3 Bf3 $1 63. Nc5 (63. Nc1 Bd1 $1 {[%csl Rb3,Re2]}) 63... Bd5 $1) (59. Nb2 Be2) 59... Bd5 $1) 59. Nc5 $1 $18 Bc6 60. Nb3 Be4 61. Nd4 g5 62. fxg5 Bd3 63. Nc6 Bc2 64. Nd8 Bg6 65. Nb7 Be4 66. Nd6 Bg6 67. Ne8+ Kg8 68. Kf6 Kf8 69. Ng7 1-0 [Event "23rd ch-EUR Indiv 2023"] [Site "Vrnjacka Banja SRB"] [Date "2023.03.07"] [Round "5"] [White "Illustrative Position"] [Black "?"] [Result "1-0"] [Annotator "Sundararajan Kidambi"] [SetUp "1"] [FEN "8/4Kpk1/4p1p1/2NbP2p/5P1P/6P1/8/8 b - - 0 1"] [PlyCount "4"] [EventDate "2023.03.03"] [SourceVersionDate "2023.03.23"] {[#]} 1... Kg8 2. Nd7 $1 {[%CAl Yd7f6,Yf6e8]} Bc6 (2... Bb7 3. Nf6+ Kg7 4. Ne8+ $18) 3. Nb6 $18 {and White wins because the Bishop needs to be on a6 now in order to control both c8 and c4 which is impossible now.} 1-0