march 29 2022

Some difficulties in logging in for this fourth course of 2022, due to the lack of a link to the session in the opening email.

To solve this problem, the link will now be both sent in the email and placed in the agenda for those who do not receive the email. 


Once again a low attendance for this session due to the above mentioned problems, which did not prevent to appreciate the positions presented by the Master, including the opening study of the course which left a great aesthetic impression (see below).

For information, the next course will be held on Saturday 23 April (on Tuesday 26, as usual) 

Translated with www.DeepL.com/Translator (free version)


Master's words


 


Charles le sage 1

"To conceal against the fury of perverse people, when it is necessary, is great sense" (Charles V the Wise, 1338-1380).

"The difference between a democracy and a dictatorship is that in a democracy you vote before you obey orders. In a dictatorship, you don't waste your time voting"

Twain (Ch. Bukowski).

"Whenever you find yourself thinking like the majority of people, pause and think..." (M. Twain).

"Vox populi, nox dei". "Sick children who don't know what they want: honey or the whip". "Democracy is the worst dictatorship, since it is exercised by the many over the few.

"Equity is better than equality" (A. Desbiolles).

"The ability of politicians to say anything and the opposite is equalled only by the propensity of their listeners to swallow everything" (J. Madiran).

Bailey 1

"Can't get from this cabin  Ain't go nowhere  Just sittin' me here grabbin'  At the flies 'round my rockin' chair" (Mildred Bailey).Csn 1

"We have all been here before" (Crosby, Stills & Nash).

In order not to be discouraged, only strength... One of my favourite students, Apoxyomene, endgames specialist  (!), is convinced of thisApoxyomene 2.

Reconnaissance

A traditional Croatian joke: "You should be grateful for everything you have -- unless you have nothing!" (in the text: Treba biti zahvalan na svemu što imaš -- Osim ako nemaš ništa!)

A quadruple echo does not come along every day: a Czech masterpiece. Follows a Rook endgame with an echo in the choice of the right place for the White King. Still simpler than the Adams-Nepo endgame where the 3 pawns (Pg / Pe & f) were one floor lower (from the white point of view). http://lecoursdumaitre.e-monsite.com/pages/cours/cat-2019/29-octobre-2019.html . The Knights endgame also has a pawn gap, but even more danger. Closing with a jewel of the woodcutter Troïtzky.Fritz 2

Exercises for the next session: we know what headaches are caused by the rook-pawn promoting to a coloured square opposite its bishop. Then a lesson of virtuosity to stop an opponent's pawn on its 7th rank. The strength of the Queen + Knight pair. Finally another dangerous pawn on the 7th, with some precise moves of the Rook.  

A miniature of the Estonian genius against the New Zealand M.I. with whom I had sympathised in Monaco, at a time that "the under 60s could not know", appreciating his kindness and modesty. He is known to the chess public for having beaten the winner of Buenos-Aires 1960 (quoted below), while finishing... last of the tournament! White makes a classical sacrifice, with one detail: the offered figure is not taken by the King, as usual. It is accompanied by a masterpiece of "Bogol" including one of the most extraordinary moves (his 15th) in history, the sacrificed figure being of the same nature. And on the same square as in Fischer-Panno, half a century later. Let us note that the game of Keres could have given rise to several fortresses which I did not manage to dismantle.

"When he played for the first time against a young hopeful, Kérès applied himself to the maximum. Which he did against me, winning in 24 moves. Since then I have great respect for him, even fear of him. He was always my toughest opponent... Some twenty years later, when I was in trouble on the eve of my match against Karpov, he was one of the few grandmasters to offer me his help. I was forced to refuse: his authority was too great, he impressed me." (V. Kortchnoï).

A small retro classic where we ask for the last black move: it is not a puzzle but at least the whole board is concerned.

Solution of the hypervolage puzzle given in the previous lesson: 1 d3(=bP) dxe2 2 Qd4(=bQ) Qe3 3 Nd2(=bN) exf1=R#.

Training: the first 6 2# come from the two best specialists of the genre before Marjan's arrival. Tries in the 7th, 9th, 10th, 12th and 13th. Two variations in the 3# of "Losch". 5 in the next. We leave the solution of the 4#, logical but complex, as well as the 8#, a tribute to H. Lepuschütz.

Two mats in echo in the h#3, from the famous chronicler who made us love the problem. Two pretty but distinct mats in the 4. In the selfmate in 3, one could do nothing, but... The one in 4 has a twin, don't forget.

Have a good time. Que Deus vos proteja.


PGN Reader

Master's diagrams

[Event "?"] [Site "?"] [Date "1984.??.??"] [Round "?"] [White "Fritz, J."] [Black "0171.11"] [Result "1-0"] [SetUp "1"] [FEN "8/2BR1N2/P7/8/7b/7b/2k1p3/7K w - - 0 1"] [PlyCount "23"] [EventDate "1984.??.??"] [SourceDate "2022.01.01"] {The solution takes about ten moves, but the same pattern (the trio wN+bB+bK) four times, with only one translation.} 1. Rd2+ $8 (1. Ba5 $2 Bxd7 $8 $17) (1. Bg3 $2 Bxg3 $1 (1... Bxd7 $1 2. Bxh4 Bc6+ $1 {and ...Kd1=}) 2. Re7 Bg4 $8 $11) 1... Kxd2 2. Ba5+ $8 Ke3 $1 (2... Kd3 3. a7 $8 Bf5 4. Nd6 $8 $18) (2... Kd1 3. a7 $8 $18) 3. a7 $8 Bg4 $1 {For a fork with the White King and Queen.} (3... Bf5 4. Nd6 $8 Bg4 5. Nc4+ $8 Kf4 (5... Kf2 6. Ne5 $1) 6. Bd2+ $8 Kg3 7. Ne5 $1 {(the simplest)} (7. Be1+ $1 Kf4 8. a8=Q $1 {(or Bxh4!)} Bxe1 { (...Bf3+ Qxf3+!! & Bxh4)} 9. Qa1 $1 {(threatens #2)} Bf3+ 10. Kg1 $8) 7... Bf6 8. Nxg4 $1 $18) 4. Ne5 $8 {[#]Take a good picture of this scheme !} (4. a8=Q $2 Bf3+ $8) 4... Bf5 $1 {For an echoing fork.} 5. Nc4+ $8 (5. Bb6+ $2 Kf4 $8 $11) (5. Bd2+ $4 Kxd2 $8 6. Nf3+ Ke3 $8 7. a8=Q Be4 $8 8. Qa3+ Kf2 $8 $19) (5. a8=Q $2 Be4+ $1) 5... Kd4 $1 (5... Kd3 6. Nd6 $8 $18) (5... Kf4 6. Bd2+ $1 (6. Nd6 $1 Bg4 7. Bd2+ $8 Kg3 8. Ne4+ $1) 6... Kf3 7. a8=Q+ Be4 8. Ne5+ $1) 6. Nd6 $3 {[#]The trio wN + bB (from white squares) + bK has moved diagonal.} (6. a8=Q $2 Be4+ $8) 6... Be6 $1 {Again this defensive theme.} 7. Nb5+ $8 (7. Kg1 $2 Bd5 $1 (7... Bg5 $1 8. a8=Q Be3+ $8 9. Kh2 Bf4+ $8)) (7. a8=Q $2 Bd5+ $1) 7... Kc5 (7... Kc4 8. Nc7 $8 Bd8 9. a8=Q $8 Bxc7 10. Qc6+ $1) (7... Ke5 8. Bc3+ $1 (8. Nc7 $1) 8... Ke4 9. a8=Q+ Bd5 10. Nd6+ $1 Kd3+ 11. Qxd5+ $8 Kxc3 12. Qc4+ $1 Kd2 13. Qd4+ $1 {& Dxh4}) 8. Nc7 $3 {[#]The same movement.} (8. a8=Q $2 Bd5+ $8) 8... Bd7 $1 {One more time !} (8... e1=Q+ {(sometimes given as a main variant, revealing a dual and, above all, masking the quadruple echo, certainly the author's idea)} 9. Bxe1 $8 Bd7 10. Na6+ $1 ( 10. Bb4+ $1 Kb6 11. a8=Q $8 Bc6+ 12. Nd5+ $3) 10... Kb6 11. a8=Q $8 Bc6+ 12. Qxc6+ $8 Kxc6 13. Bxh4 $8 $18) 9. Na6+ $8 (9. a8=Q $2 Bc6+ $1) 9... Kb5 {b6 square is unavailable.} (9... Kd6 10. Bb4+ $1 (10. Nb8 $1 Be6 11. Bb4+ $8 Ke5 12. Nc6+ $8) 10... Kd5 11. a8=Q+ Bc6 12. Nc7+ $1) 10. Nb8 $3 {[#]Again the same movement, except for the bK square.} (10. Nc7+ $6 {(waste of time)} Kc5 $1 11. Na6+ $8) 10... Kxa5 (10... Bc8 {with bK on b5 instead of b6, have no more sense}) 11. a8=Q+ $8 Kb5 (11... Kb4 12. Qe4+ $1) 12. Qa6+ $1 1-0 [Event "?"] [Site "?"] [Date "1980.??.??"] [Round "?"] [White "Campos Moreno J, Garcia Palermo C"] [Black "0400.45"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/4pp1p/p4kp1/8/1r6/4P1P1/5P1P/5RK1 w - - 0 36"] [PlyCount "79"] [EventDate "1980.??.??"] [SourceDate "2022.01.01"] 36. Rc1 $1 {It is necessary to forbid ...Rb7-a7.} (36. Ra1 Rb6 37. f4 (37. Ra5 Ke6 $1) 37... Kf5 $1 38. Kf2 Kg4 39. h3+ $1) 36... Rb6 (36... a5 37. Rc5 $1 (37. Rc6+ $1) 37... a4 38. Ra5) (36... Kf5 37. Rc7 $1) 37. Rc7 $1 e6 (37... a5 38. Ra7 Rb5) 38. Ra7 $1 Rb1+ (38... h5) 39. Kg2 Ra1 40. f4 h5 41. e4 $1 Ra2+ 42. Kf3 $1 Rxh2 (42... a5) 43. Rxa6 $1 (43. e5+ $1 {(if White wants to push this pawn, it is now)} Kg7 {(otherwise mate)} 44. Rxa6 $8 $11) 43... Rb2 44. e5+ $2 {A mistake that should cost half a point.} (44. Ra7 $1 Rb3+ 45. Kf2 $1 $11) 44... Kg7 $2 {Same remark.} (44... Kf5 $8 45. Ra7 (45. Ra3 Rb5 $1 46. Rc3 g5 $1 47. fxg5 {(Rc4 ...Rb3+! Kf2 ...h4!!)} Rxe5 48. Rc7 Kxg5 $1 $19) 45... Rb3+ $8 46. Kf2 Kg4 $8 47. Rxf7 Rxg3 $8 (47... Rf3+ $2 48. Ke2 $8 {& Rf6=}) 48. Rf6 Rf3+ $8 49. Kg2 Rxf4 $8 50. Rxg6+ Kf5 $8 51. Rh6 h4 $1 52. Rh5+ Kg6 $8 ( 52... Ke4 $2 53. Rg5 $1 $11) 53. Rh8 Kg5 $8 54. Rh7 Rf5 $1 (54... Re4 $1 55. Rg7+ Kf5 $19) 55. Rg7+ Kf4 $1 56. Kh3 (56. Rh7 Kg4 $1) 56... Rg5 $8 57. Rf7+ Kxe5 $8 58. Kxh4 (58. Rf1 Rh5 $8 59. Re1+ Kd5 $1 60. Rd1+ Kc4 $1) 58... Rg1 $3 {[#](prevents "checking distance" from white Rook)} (58... Rg8 $2 {(or Rg2?)} 59. Rf1 $8 $11) 59. Kh3 (59. Rf2 Ke4 $1 {(...Kd4!)} 60. Re2+ Kf4 $8) 59... Ke4 $1 60. Ra7 e5 $19) 45. Ra4 $11 Rb3+ 46. Kf2 $1 (46. Kg2 $6 g5 $1 47. fxg5 $8 Re3 48. Ra5 $8 Kg6 49. Rb5 Kxg5 {(for ...Re4-g4)} 50. Rb7 $8 (50. Kf2 $2 Re4 $8 51. Kf3 Rg4 $8 52. Rb7 Kg6 $8 53. Ra7 Rg5 $8 54. Kf4 Rf5+ $8 55. Ke4 Kg5 $8 $19) 50... Kg4 (50... Kg6 51. Rb5 $8) (50... Re2+ 51. Kh3 $8) (50... Re4 51. Rxf7 $1) 51. Rxf7 $1 Rxg3+ 52. Kf2 $8 h4 53. Rf6 $1 $11) 46... g5 { Considering ...Rb5 then ...Kg6-f5.} (46... Rb5 47. Re4 $1) 47. fxg5 $8 (47. Rc4 $2 Rb5 $1 48. Ra4 (48. fxg5 Rxe5 $8) 48... Kg6 $1) 47... Rb5 48. Re4 $1 (48. Rh4 $1 Rxe5 (48... Kg6 49. Re4 $8 {: texte}) 49. Rxh5 $8 Kg6 50. Rh8 $1 Kxg5 51. Rf8 f5 52. Kf3 $11) 48... Kg6 49. Kg2 Kxg5 50. Kf3 Rb1 (50... Kf5 51. Rf4+ $1) 51. Kf2 Rb7 52. Rf4 h4 {Only way to progress.} 53. Rxh4 $8 Kf5 54. Rh5+ (54. Ra4 $1 Kxe5 55. g4 $1 $11) 54... Ke4 55. Kg2 Rb2+ 56. Kh3 (56. Kg1 Kf3 57. Rh7 $1 Rb7 58. Rg7 $1 $11) 56... Rf2 57. g4 $1 Kf4 58. Rh7 $1 (58. Rh6 $1 Rf3+ 59. Kh4 $8 Kxe5 60. Rh5+ $1 Kd4 61. Ra5 $1 $11) 58... Kxe5 59. Kg3 $1 (59. Rg7 $1 Rf6 60. Kg3 $1) (59. Rh6 $2 Rf6 $3 {[#]} 60. Rh7 (60. Rh5+ Kf4 $8) 60... Kf4 $8 61. Rg7 Rh6+ $1 (61... e5 $1 62. Kg2 Ke3 $8) 62. Kg2 f6 $8 $19) 59... Rf1 60. Rh2 Rg1+ 61. Kf3 $8 Kf6 62. Ra2 (62. Rh8) 62... e5 63. Ra6+ Kg7 (63... Kg5 64. Ra8 $1 (64. Ra5 $1 Re1 65. Ra8 $8) 64... e4+ (64... Rf1+ 65. Kg3 $8) 65. Kxe4 $8 Rxg4+ 66. Kf3 $11) 64. Ra5 $1 f6 65. Ra7+ $1 {The simplest.} ({Also possible} 65. Ra4 $1 {(played in the game)} Rb1 66. Rc4 (66. Kg3 Rb3+ 67. Kh4 $1) (66. g5 $2 fxg5 $8 {(...f5? Ra6!! ...Rg1 Re6!=)} 67. Ra6 Rb4 $8 68. Re6 Rf4+ $8 69. Kg3 Re4 $8 70. Kf3 Kf7 $3 {[#]} 71. Ra6 Rf4+ $8 72. Kg3 Rf6 $8 $19) 66... Rb3+ {(but be careful !)} 67. Kf2 $2 {(decisive mistake)} (67. Kg2 $3 {(if the wK had been on g3, Kh4! would also have been good, but not Kh2? the later possibility of ...Rf3!!)} Kg6 68. Rc8 $1 {(or on c7 for Rf7!)} Kg5 69. Rf8 $8 {as in the 70th move of our main line}) 67... Kg6 $1 68. Ra4 (68. Rc8 Kg5 $8 69. Rf8 Rb4 $8 $19 {: no more Kh3!}) 68... Kg5 $8 69. Rc4 Rd3 $3 {(for ...Rd4) 0-1}) 65... Kg6 66. Rb7 $1 (66. Ra8 $1 Rb1 67. Rc8 $1 Rb3+ 68. Kg2 $8 {(as in the text)} Kg5 69. Rf8 $8 $11) 66... Ra1 67. Rc7 $1 (67. Kg3 $1 Ra3+ 68. Kh4 $1 $11) 67... Ra3+ 68. Kg2 $8 {See 72th move.} (68. Kf2 $2 Kg5 $8 69. Rf7 Ra4 $1 (69... e4 $1 70. Re7 Kf4 $8) 70. Kf3 {(no Kh3)} Rf4+ $8) 68... Kg5 69. Rf7 $3 {[#]} (69. Rg7+ $2 Kf4 $8 70. Rg6 Ra6 $1 71. Kf2 e4 $8 72. Ke2 e3 $8 73. Rh6 Rb6 $1 {Z} 74. Rg6 (74. Rh3 Rb2+ 75. Ke1 Rg2 $1 76. Rh6 Kg5 $1 77. Rh3 e2 $1) 74... Rb2+ 75. Ke1 f5 $3 {[#]} 76. gxf5 Kf3 $8 $19) 69... Rb3 ( 69... e4 70. Re7 $1 (70. Rf8 $1 Rf3 71. Re8 $8 Kf4 72. Re6 $8) 70... Kf4 71. Re6 $8 Ra2+ 72. Kg1 $3 {[#](the middle way)} (72. Kh1 $2 Kg3 $1 $19) (72. Kf1 $2 f5 $3 73. gxf5 Kf3 $8 74. Kg1 e3 $8 75. f6 Ra1+ $8 76. Kh2 Ra5 $1 {(or on a4)} 77. f7 Rf5 $8 78. Kg1 e2 $8 79. Re7 Rf6 $1 {Z}) (72. Kh3 $2 f5 $3 {(again ; and not ...e3? Rxf6+!! ...Ke5 Rf1!! ...e2 Re1!!=)} 73. Rf6 Ra3+ $1 {(...e3! Rxf5+ ...Ke4)} 74. Kh4 Ra5 $3 75. gxf5 e3 $1 {(...Ra1? Kh3!!)} 76. Re6 Rxf5 $19 ) 72... f5 73. gxf5 $8 Kf3 74. f6 $8 Ra1+ 75. Kh2 Ra5 76. Kg1 $1 Rg5+ 77. Kf1 $8 e3 78. f7 $8 $11) 70. Rf8 $8 (70. Rg7+ $2 Kf4 $8 (70... Kh4 $2 71. Rg6 $1 $11) 71. Rg6 Rb6 $1 72. Kh3 (72. g5 Rb2+ $8) 72... e4 $8 73. Rg8 Rb3+ $1 74. Kh4 e3 $1 75. Re8 Rb5 $1 (75... Rb1 $1) 76. Re6 f5 $3 (76... Rb1 $1 77. Rxf6+ Ke5 $8 78. Rf8 e2 $8 79. Re8+ Kf4 $8) 77. g5 Re5 $1 {0-1 Arkell-Ghasi 2021}) 70... Rb6 (70... Rb4 71. Kh3 $8 {idem}) 71. Kg3 $1 {Controlling f4.} Rb3+ 72. Kg2 $3 {[#]The middle way !} (72. Kf2 $2 Rb4 $8 {(no more Kh3)} 73. Kf3 Rf4+ $8 74. Kg3 Rxg4+ $8) (72. Kh2 $2 Rf3 $8 73. Rg8+ Kf4 $1 (73... Kh4 $1) 74. Rg6 Ke3 $8 75. Kg2 e4 $8 76. Rg8 Rf2+ $8 (76... f5 $2 77. gxf5 $8 Rf2+ 78. Kg1 $8) 77. Kg3 (77. Kg1 Ke2 $8 78. Ra8 e3 $1) 77... f5 $3 78. gxf5 Rxf5 $8 79. Rg7 (79. Ra8 Rg5+ $8) 79... Ra5 $1 80. Rg8 Ra1 $1 81. Kg2 Ke2 $1 $19) 72... Rb4 (72... Ra3 73. Rf7 $8 Ra4 74. Kh3 $8 $11) (72... e4 73. Re8 $1 (73. Kh2 $6 Rf3 74. Re8 $8 Rf4 {(...Kf4 Re6!!)} 75. Kh3 $8 $11) 73... Kf4 74. Re6 $8 {(as already seen with bR on a3)} Rb2+ 75. Kh3 $1 {(would lose with bR on a2)} (75. Kg1 $1 { is known}) 75... f5 76. gxf5 $8 Kxf5 77. Re8 $1 (77. Ra6 $1) 77... Kf4 78. Rf8+ $8 Ke3 79. Kg3 $1 Rb1 80. Kg2 $8 Kd2 81. Rf2+ $1 (81. Ra8 $1) 81... Kd3 82. Ra2 $3 $11) 73. Kh3 $3 {[#]} Rb6 (73... Rf4 74. Rg8+ $8 {(bK has no more access to f4)} Kh6 75. Kg3 $11) (73... Ra4 74. Rf7 $8 $11) 74. Kg3 $8 Rb3+ 75. Kg2 $8 1/2-1/2 [Event "?"] [Site "?"] [Date "1979.??.??"] [Round "?"] [White "Gufeld E, Grigorian K"] [Black "0004.43"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/7p/6p1/3kNp2/4nPP1/4P3/4K2P/8 w - - 0 1"] [PlyCount "22"] [EventDate "1979.??.??"] [SourceDate "2022.01.01"] {In knight endgame, one more pawn normally wins, as in the pawn endgame, right? Certainly, but the white structure is not ideal.} 1. gxf5 gxf5 2. Nf3 Nf6 $2 {And indeed, Black could defend himself.} ( 2... Nd6 $1 3. Kd3 (3. Nd4 Ke4 $1) 3... Ne4 $1 (3... Nb5 $2 4. Nd4 $1 Nd6 5. Nxf5 $8 Nxf5 6. e4+ $8 Ke6 7. exf5+ $8 Kxf5 8. Ke3 $8 $18 {: fortunately, the h2-pawn is not on h3; if it were, Black would say: fortunately, the h7-pawn is not on h6 !}) (3... h6 $2 4. Nd4 $8 Kc5 5. Ne6+ $8 Kd5 6. Ng7 $8 Kc5 7. h4 $1 Kd5 8. Nxf5 $3 $18) (3... Nc4 $1 4. Nd4 Nb2+ $8 5. Kc3 Na4+ $8) 4. Nd4 Nc5+ $8 5. Ke2 Ke4 $8 6. Nb5 Kd5 $8 7. Kf3 {(the Nd4 threat does not have the same effectiveness as with the bN on f6, as in the text)} Ke6 $1 (7... Nb3 $1) ( 7... Ne6 $1 8. Nc3+ Kd6 $1 9. e4 fxe4+ 10. Nxe4+ Ke7 $8 $11) 8. Nd4+ Kf6 $8 $11 ) (2... Nc3+ $1 3. Kd2 (3. Kd3 Ne4 $1 {as above}) 3... Ne4+ $1 4. Kd3 Nc5+ $1 5. Ke2 Na4 $1 6. Ng5 h6 $8 7. Nf7 Nc5 $1 8. Nxh6 $6 Ke6 $3 {[#]} 9. h3 Kf6 10. Kf3 Kg6 11. Ng4 fxg4+ $8 12. hxg4 Kf6 $11 {: the 3 linked pawns do not win against the knight, being below their 5th row}) (2... Nc5 $1 3. Ng5 h6 4. Nf3 Nb3 $1 $11) 3. Nd4 $8 (3. Kd3 $2 Nd7 $1 (3... Ne4 $1) 4. Nd4 Nc5+ $8 {as above}) 3... Ke4 4. Nb5 $8 Kd5 (4... Nd5 $2 5. Nd6#) (4... Ng4 $2 5. Nc3# $1 {model mate}) 5. Kf3 $8 (5. Kd3 $2 Ne4 $1 (5... Nd7 $1 6. Nc7+ Kd6 $8) (5... Ng4 $2 6. Nd4 $8 Nxh2 7. Nxf5 $8 Ng4 8. e4+ $1) 6. Nc7+ Kd6 $8 7. Ne8+ Ke6 8. Ng7+ Kf6 $8 9. Nh5+ Ke6 $1 10. Ng3 Nd6 $1 $11) 5... Ng4 $1 {Otherwise Nd4 wins. White has now let his opponent escape. Would you have done better ?} (5... Ne8 6. Nd4 $8 Ng7 7. Nxf5 $8 $18) 6. Nd4 $2 { The move so strong is no longer appropriate.} (6. e4+ $2 Kc5 $8 7. exf5 Nxh2+ $1 (7... Nh6 $1 8. Nc3 {(8 Ke4 ...Kxb5 Ke5 ...Kc4!=)} Nxf5 $8 9. Ke4 Nh6 $8 10. f5 Ng4 $8 $11) 8. Kg3 Nf1+ $8 9. Kg4 Kc6 $1 (9... Kd5 $1 10. Nc7+ Kd6 $8) 10. f6 Kd7 $8 11. Nc7 Ne3+ $1 (11... Nd2 $1 12. Kf5 {(Kg5 ...Ne4+!!)} Nc4 $1) 12. Kg5 Ng2 $3 {[#]} (12... Nc4 $2 13. Kh6 $8 Nd6 14. Kxh7 $8 Kxc7 15. Kg8 $18) 13. f5 {(Kh6 ... Nxf4!!)} Kd8 $1 (13... Ne3 $1) 14. Nd5 (14. Kh6 Ne3 $1) 14... Ke8 $8 $11) ({The win was achieved by} 6. h3 $8 Nh6 {(protecting f5, but Knight suffers)} 7. Nd4 $1 Kd6 8. Ke2 $8 (8. e4 $2 fxe4+ $8 9. Kxe4 Ke7 $1 10. Nc2 Nf7 $11) (8. Kg3 $2 Ke7 $1 9. Kh4 Kf6 $8 10. Kh5 Nf7 $8 11. Nf3 Kg7 $3 {(...Nd6? Kh6!! ... Nc4 Ng5!!)} 12. Ng5 Nd6 $1 $11) 8... Ke7 (8... Kd7 9. Kd3 Kd6 10. Kc4 $8 Ke7 11. Kd5 Kf6 12. Kd6 Nf7+ 13. Kd7 $1 h6 14. Nc6 $1 h5 15. Nb4 $1 $18) 9. Kd3 $8 Kf6 10. Kc4 $8 Nf7 11. Kd5 $1 Nh8 12. Nc6 $1 Ng6 (12... Nf7 13. Ne5 $1 Nd8 14. Kd6 $1 Nb7+ 15. Kc6 $1 Nd8+ 16. Kc7 $8 Ne6+ 17. Kd6 $8) 13. Kd6 $8 (13. Ne5 $2 Ne7+ $8 14. Kd6 Nc8+ $8) 13... Nh4 14. Ne5 $8 Ng2 15. Nc4 $8 Nh4 16. Nb6 $3 {[#]} Kf7 {(otherwise Nd5+! or, on ...Nf3, Nd7+!!)} 17. Ke5 $8 Ke7 18. Nd5+ $8 Kf7 19. Nb4 $3 {[#](to c2 : keep an eye on e3)} Ng2 20. Nc2 $8 Nh4 21. Nd4 $8 Kg6 22. Ke6 $8 h6 23. Nc6 $1 (23. Ke5 $1 {Z} h5 24. Ke6 $1 {Z}) 23... Ng2 24. Ne7+ $8 {wins}) 6... Nxh2+ $8 7. Kg3 Nf1+ $1 (7... Ng4 $1) 8. Kf2 Ke4 $1 {[#]} (8... Nd2 $1 9. Nxf5 h5 $1 10. Ke2 (10. Ng3 h4 $8) 10... Nc4 $1 $11) 9. Kxf1 (9. Nxf5 Nxe3 $8 (9... Nh2 $2 10. Nd6+ $1 Kd5 11. Ne8 $3 Ng4+ 12. Kf3 $8 $18) 10. Nxe3 Kxf4 $8 $11) 9... Kxe3 $8 10. Ne6 Kf3 $8 11. Kg1 Kg3 $1 (11... Kg3 $1 12. Kh1 h5 (12... h6 13. Kg1 h5 $8 $11) 13. Kg1 h4 14. Kh1 h3 15. Kg1 Kf3 16. Kh2 Kg4 $8 $11) 1/2-1/2 [Event "?"] [Site "?"] [Date "1911.??.??"] [Round "?"] [White "Troitzky, A."] [Black "4001.01"] [Result "1-0"] [SetUp "1"] [FEN "5q2/5p1K/5k2/8/5NQ1/8/8/8 w - - 0 1"] [PlyCount "7"] [EventDate "1911.??.??"] [SourceDate "2022.01.01"] {Very short study (4 moves) but the 2nd seems to come from nowhere.} 1. Nd5+ $8 (1. Nh5+ $2 Ke5 $8 (1... Ke7 $2 2. Qb4+ $8 Ke8 3. Nf6+ $1) 2. Qf4+ Kd5 $1 (2... Ke6 $1 3. Qe4+ Kd7 $8 $11) 3. Nf6+ Ke6 $1 $11) 1... Ke5 2. Nb6 $3 {[#]Quo vadis ?} Qd8 (2... Qe7 3. Qe2+ $8 {[#]} Kd6 (3... Kf6 4. Nd5+ $8) 4. Nc8+ $8) (2... f5 3. Nd7+ $8 Kd6 4. Qb4+ $1) (2... Qa3 {(or on d6)} 3. Nc4+ $8) (2... Qc5 {(or on b8)} 3. Nd7+ $8) (2... Kd6 3. Qb4+ $8) (2... Kf6 3. Nd7+ $1) (2... Qe8 3. Qe2+ $8) 3. Nc4+ $8 {[#]} Kf6 (3... Kd5 4. Qd1+ $8) 4. Qh4+ $8 {One of J. Roycrof's favourite studies.} 1-0 [Event "ENG-URS"] [Site "London"] [Date "1954.??.??"] [Round "2"] [White "Keres, P."] [Black "Wade, R."] [Result "1-0"] [ECO "C14"] [PlyCount "111"] [EventDate "1954.07.03"] [EventType "team"] [EventRounds "2"] [EventCountry "ENG"] [SourceDate "2022.01.01"] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 $1 {[#]Chatard-Alekhin gambit.} Bxg5 7. hxg5 Qxg5 8. Nh3 Qe7 9. Nf4 (9. Qg4 f5 10. Qh5+ (10. Qg3 Nf8 11. Be2 c6 12. O-O-O Nbd7 13. Rh2 {1/2-1/2 Skripchenko,A (2456) -Matveeva,S (2411)/Vrnjacka Banja 1999}) 10... Qf7 (10... g6 11. Qh6 Nf8 12. Nf4 Qf7 13. Be2 {(b4!)} Nc6 14. Nh5 Nxd4 15. Nf6+ Kd8 16. Qh4 Nxc2+ $8 17. Kd2 Nxa1 18. Nfxd5+ Ke8 {1/2-1/2 Frolov,D (2399)-Volkov,S (2587)/Tomsk 1999}) 11. Qxf7+ Kxf7 12. Nb5 Na6 13. Ng5+ Ke7 14. Rxh7 Rxh7 15. Nxh7 Nb6 16. Na3 (16. Ng5 ) (16. b3) 16... Bd7 17. Bxa6 bxa6 18. O-O-O c5 19. dxc5 Na4 20. Rd3 Rh8 21. Rh3 Nxc5 $11 {Klip,H (2350)-Kortschnoj,V (2585)/Netherlands 1992}) 9... a6 ( 9... Nc6 10. Qd2 (10. Qg4 Nxd4 {(...g6! Vl. Kovacevic)} 11. O-O-O Nf5 12. Nfxd5 exd5 13. Nxd5 Qxe5 14. Bb5 O-O 15. Bxd7 {(Qh5?! ...h6!)} Bxd7 16. Qh5 $8 f6 $1 {(...h6? Rhe1! ...Qd6 Ne7+! Aronian,L (2560)-Luther,T (2600)/Bundesliga 2001)} 17. Rhe1 $6 {(Qxh7+! ...Kf7= but especially not Nxf6+? ...Qxf6-+ with idea 19.. .Ke6!!)} g6 $1 18. Qh1 $8 {(Qh3? ...Qd6!! Ne7+?! ...Nxe7!!-+)} Ng3 $3 {[#]} 19. fxg3 Qg5+ $8 20. Kb1 Rad8 $17) 10... Nb6 $6 (10... b6 $6 11. Nb5 $1 Nf8 {(...Rd8!)} 12. Nh5 {(c4!)} Rg8 13. Rh3 {Pikula,D (2510)-Antic,D (2480)/Herceg Novi 2001}) (10... a6 $1 11. Nh5 Qf8) 11. Nh5 $1 Rg8 (11... Qf8 12. Nb5 $1) 12. Bd3 Bd7 13. Bxh7 $16 {Unzicker,W-Donner,J/Lenzerheide 1964 et Ernst,S (2587)-Reich,T (2350) /Bundesliga 2011}) (9... g6 10. Bd3 (10. Qg4 Nc6 11. O-O-O h5 {Dzhumaev,M (2520)-Ulibin,M (2586)/Abu Dhabi 2004}) (10. Qf3 Nb6 11. O-O-O Bd7 12. g4 c5 13. dxc5 Qxc5 14. Nd3 Qe7 15. Qf4 {Kovacevic,A (2425)-Stojanovic,M (2355)/Nis 1995}) 10... Qg5 $2 (10... Nc6 $1 11. Bxg6 fxg6 $8 12. Nxg6 $8 hxg6 13. Rxh8+ Nf8 $11) 11. Qd2 $16 a6 $6 (11... c6 12. Qe3 $1 {for Nfxd5!}) (11... Nb6 12. a4 $1) 12. Bxg6 $1 {[#]} fxg6 13. Nxe6 Qxd2+ 14. Kxd2 $18 {Fressinet,L (2535)-Vallin, G (2395)/Vichy 2000}) (9... Nf8 $2 10. Qg4 $1 f5 (10... g6 11. Ncxd5 $18) 11. exf6 $1 gxf6 12. O-O-O c6 13. Re1 Kd8 14. Rh6 $1 $18 e5 15. Qh4 $1 Nbd7 16. Bd3 $1 (16. Nfxd5 $1) 16... e4 17. Qg3 $1 (17. Bxe4 $1) 17... Qf7 18. Bxe4 $1 dxe4 19. Nxe4 Rg8 20. Qa3 $1 Qg7 21. Nd6 $1 Nb6 22. Ne8 $1 Qf7 23. Qd6+ Qd7 24. Qxf6+ {1-0 Alekhine,A-Fahrni,H/Mannheim 1914 which is the eponymous game}) (9... c5 10. Nb5 $1 cxd4 $2 (10... Kd8 $8) 11. Nd3 $2 (11. Nc7+ $1 Kd8 12. Nxa8 Qb4+ 13. Qd2 Qxb2 14. Rd1 $18) 11... Kd8 $1 12. Qg4 g6 (12... f6) 13. Nxd4 Nc6 $11 { Stefansson,H (2470)-Ostenstad,B (2475)/Gausdal 1991}) 10. Qg4 $1 (10. Qf3 $1) 10... Kf8 (10... g6 11. O-O-O c5 (11... b5 12. Ncxd5 $2 {(Bd3)} exd5 13. Nxd5 Nb6 $8 14. Qf3 Nxd5 15. Qxd5 c6 $19 {Djurhuus,R (2491)-Berg Jensen,J (2231)/ Gausdal 2001}) 12. Qg3 (12. Nfxd5 $6 exd5 13. Nxd5 $2 Nb6 $8 14. Qxc8+ Nxc8 15. Nxe7 Nxe7 $19 {Chistiakov,A-Kolobov,Y/Moscow 1962}) (12. Bd3 $6 cxd4 13. Ncxd5 exd5 14. Nxd5 $2 {(Bxg6! ...Nc6 Bxf7+!)} Nb6 $8 $19 {Reti,R-Spielmann,R/ Stockholm 1919}) (12. dxc5 $1 Nc6 13. Qg3 Ndxe5 $2 {(...Qxc5=)} 14. Nfxd5 $1 $18) 12... Nb6 $6 (12... cxd4 $1) 13. dxc5 $1 Qxc5 14. Bd3 $1 Qf8 $6 (14... Qc7 15. Nh3 N8d7) (14... Bd7 $6 15. Bxg6 $1) 15. Be4 $3 {[#](isn't it a remarkable move ?)} dxe4 (15... N8d7 16. Bxd5 $1) (15... Bd7 16. Bxd5 $1) (15... Nc6 16. Bxd5 $1) 16. Nxe4 $8 N8d7 17. Qc3 $3 {[#]} (17. Qh4 $6 Qe7 $8 18. Nd6+ Kf8 $8 19. Qh6+ $8 Kg8 20. Nh5 $6 {(Ne4! ...Qf8! Qh4!=)} Qf8 $8 21. Qf4 Nd5 $17 22. Rxd5 exd5 23. Rh3 $8 a5 $1 24. Rf3 Ra6 $8 25. e6 $8 fxe6 26. Qxf8+ Nxf8 27. Nf6+ $8 Kg7 28. Nfe8+ $8 Kg8 $8 $11) (17. Nd6+ $1 Kd8 18. Nh3 $3 {(for Ng5)} f6 $2 19. exf6 Qxf6 20. Ng5 $18) 17... Qe7 $6 (17... Kd8 $6 18. Rd6 $1) (17... h5 18. Nd6+ $1 Kd8 19. Rh3 $1 g5 20. Ne2 $1 {for Rhd3! or Rf3!}) 18. Nf6+ $3 ( 18. Nd6+ $2 Kf8 $8) (18. Rd6 $1 a5 {(...h5 Rhd1!)} 19. Qc7 $1 Nd5 20. Rxd5 $3 exd5 21. Nxd5 $8 Qe6 22. Nef6+ $1 Nxf6 23. Nxf6+ $8 Kf8 {with a model mate in 4 moves}) 18... Nxf6 (18... Kd8 19. Qa5 $1) (18... Kf8 19. Nxh7+ $1) 19. exf6 $8 Qf8 (19... Na4 20. Qd4 $1 {or Qe5! or fxe7! but not Qa5? ...Qxf6!}) 20. Qc7 $1 Nd7 21. Nd5 $1 {[#](for Ne7 ou Nb6)} exd5 22. Rhe1+ Ne5 23. Rxe5+ Be6 24. Kb1 $1 (24. f4 $1 {for Rdxd5}) (24. Rdxd5 $4 Qh6+ 25. Rd2 O-O $19) (24. Re3 $1 { for Rxd5}) 24... Rd8 (24... Qb4 25. a3 $1) 25. Rdxd5 $8 Rxd5 26. Rxd5 $1 (26. Qc8+ $1 Rd8 27. Rxe6+) 26... Bxd5 27. Qc8# {Bogoljubow,E-Spielmann,R/Stockholm 1919}) (10... f5 $2 11. Qh5+ $1 Kd8 12. Ng6 $18) 11. Qf3 $1 {Threatens Rxh7! for a fork on g6.} (11. Nh5 $2 g6 $1 12. Nf4 c5 $1 $17) (11. O-O-O $1) 11... Kg8 $8 (11... Ke8 12. Qg3 $1 Qf8 13. Nfxd5 $1 $18) 12. Bd3 $1 (12. Qe3 $1 Qf8 (12... Nc6 13. O-O-O Nd8 14. Nfxd5 $1 exd5 15. Nxd5 $18) (12... c5 13. Nfxd5 $1 exd5 14. Nxd5 Qd8 15. dxc5 $18) (12... h6 13. O-O-O) 13. Bd3 $1 g6 14. Qh3 $1 Qg7 15. O-O-O Nc6 (15... c5 16. Nxe6 $1) 16. Nce2 $16) 12... c5 $6 { As well as the d5 weakness, there remains the h7 weakness !} (12... Nc6 13. O-O-O $1 Nxd4 14. Qe3 $8 c5 (14... Qc5 15. Na4 $1 Qa7 16. Bxh7+ $3 {as well}) 15. Bxh7+ $3 Rxh7 16. Rxh7 Kxh7 17. Rh1+ Kg8 18. Qh3 $18) (12... g6 13. O-O-O c5 (13... Qg5 14. Kb1 Nf8 15. Rh3 $1) 14. Qg4 $8 cxd4 15. Bxg6 $3 Nxe5 (15... fxg6 16. Nxg6 $8) 16. Bxf7+ $3 Kxf7 17. Qh5+ $8) (12... h6 $1 13. Nce2 $1 (13. O-O-O $2 c5 $1 14. Nfxd5 exd5 15. Nxd5 Qg5+ 16. Kb1 cxd4 $11) (13. Nfxd5 $2 exd5 14. Nxd5 Qd8 $8 15. Bc4 b5 $1 16. Nxc7 bxc4 17. Nxa8 Qa5+) (13. Qe3 $1) 13... c5 14. c3 Nc6 15. Qe3 cxd4 (15... b5 16. Rh3) 16. cxd4 Qb4+ 17. Kf1 Qxb2 18. Rb1 Qxa2 19. Rh3 $1 Qa5 (19... Kf8 20. Nxe6+ $3 fxe6 21. Nf4) 20. Nh5 $1 Qd8 21. Rg3 g5 22. f4 Kf8 $8 23. fxg5 hxg5 24. Rxg5 Qe7 25. Ng7 $1 a5 26. Nf4 $3 {for Ngxe6+!}) 13. Bxh7+ $3 {[#]This classic sacrifice is not usually made with a black rook on h8!} ({One could also exploit the other weakness :} 13. Ncxd5 $3 exd5 14. Nxd5 Qd8 (14... Qe6 15. Bc4 $1 {(or Bf5!)} Qe8 16. O-O-O $1 $18) (14... Qg5 15. Rh5 $8 Qd8 16. Rxh7 $3 {idem}) ( 14... Qe8 15. O-O-O $1 {(neither Nc7? ...Nxe5!! nor Rxh7? because there will be 18...Qe6! for Rh1 ...Qh6+)} Nf8 16. Qg3 $1 Nbd7 17. Nc7 $1 $18) 15. Rxh7 $3 {[#]} (15. Qe4 $2 Nc6 $1 {(or ...Nf8!)} 16. Rxh7 Nf8 $8 17. Rxh8+ Kxh8 18. O-O-O Kg8 19. Rh1 Bf5 $1 {(or ...Ng6!)} 20. Qxf5 $8 Qxd5 $8 21. Qh5 f5 $8 22. b3 b5 $8 23. Bxf5 { (for e6!)} Qxd4 $8 24. Qh8+ Kf7 25. Qh5+ $8 Kg8 $11) (15. Bxh7+ $1 Rxh7 16. Rxh7 $8 Nf8 $1 17. Rh2 $1 Ng6 {(...Bg4 Qxg4 ...Qxd5 Qh3!)} 18. O-O-O $8 Nc6 { (...Be6 Nf4!)} 19. Rdh1 $8 Qg5+ 20. Kb1 $8 Bg4 21. Qg3 $8 $18) 15... Rxh7 ( 15... Nf8 16. Nf6+ $1 gxf6 17. Qg3+ $8 Ng6 18. Bxg6 $8 Rxh7 19. Bxh7+ $8 Kxh7 20. Ke2 $1) 16. Bxh7+ $8 Kxh7 17. Qh5+ $8 Kg8 18. O-O-O $8 Nf8 (18... g6 19. Qh6 $8 Qf8 20. Ne7+ $3 {[#]} Qxe7 21. Rh1 $8 f6 22. Qh8+ $8 Kf7 23. Rh7+ $8 Ke6 24. Qg8+ $1) 19. Rh1 $8 f5 20. exf6 $8 gxf6 (20... g6 21. Qh8+ $1 Kf7 22. Re1 $1 Ne6 23. Qh7+ $8 Kf8 24. f7 $8 $18) 21. dxc5 $1 (21. c4 $1 Qd6 22. Re1 $1 Nc6 23. dxc5 $1) 21... Nc6 22. Qh8+ $8 Kf7 23. Rh6 $3 {[#]} Qxd5 (23... Ke6 24. Qg8+ $1 Ke5 25. Rh5+ $1 f5 26. Nb6) 24. Rxf6+ $8 Ke8 25. Qxf8+ $8 Kd7 26. Rf7+) (13. Rxh7 $3 Rxh7 14. Bxh7+ $8 {idem}) (13. O-O-O $2 h6 $3 (13... g6 $2 14. Qg4 $3) 14. Ncxd5 exd5 15. Nxd5 Qg5+ $8) 13... Rxh7 (13... Kf8 14. Ng6+ $1) 14. Rxh7 $8 Kxh7 15. O-O-O $8 (15. Qh5+ $2 Kg8 16. O-O-O g6 $8 17. Nxg6 (17. Qh6 Qf8 $8 18. Qg5 $8 Qg7 $1 {(...Nc6? Nh5!!)} 19. Rh1 cxd4 $1) 17... fxg6 $8 18. Qxg6+ $8 Qg7 $8 (18... Kf8 $2 19. Rd3 $3) 19. Qxe6+ Qf7 $8 20. Qg4+ $1 Qg7 $8 $11) 15... Kg8 $1 {The best defence.} ({Game ended} 15... f5 $2 16. Rh1+ $1 Kg8 17. Rh8+ $1 {1-0}) ({Or} 15... Nf8 $1 16. Qh5+ $1 Kg8 17. Rh1 $8 {idem}) (15... Qh4 $2 16. g3 $1 $18 {for Rh1}) (15... Qg5 $2 16. Rh1+ $8 Kg8 17. Rh5 $8 Qe7 18. Qh3 $18) 16. Rh1 $8 (16. Qh5 $2 g6 $8 {as above}) 16... Nf8 (16... g6 17. Qh3 $1 $18) 17. Qh5 $1 (17. Qh3 $1 f5 (17... f6 18. Qh8+ $8 Kf7 19. Rh3 $3) 18. Qh8+ $8 Kf7 19. Qh5+ $8 Kg8 20. g4 $1 {: text}) 17... f5 (17... f6 18. Rh3 $3 {[#]} ({or before} 18. Qh8+ $1) (18. Ncxd5 $2 exd5 $8 19. Nxd5 Qe6 $3 20. Nc7 {(exf6 ...gxf6=)} Qf5 $1 $11) 18... cxd4 (18... fxe5 19. dxe5 $1) 19. Qh8+ $8 Kf7 20. Rg3 $8 g6 21. Nxg6 $8 Nxg6 22. Qh5 $3 (22. Qh7+ $6 Ke8 $8 23. Qxg6+ Qf7 24. Qh6) 22... Ke8 23. Rxg6 $3 Kd7 24. Nxd5 $1 ({also} 24. Qh8 $1 dxc3 25. Rg7 $1 Nc6 26. exf6 $18) 24... exd5 25. Rxf6 $8 (25. Qh8 $2 fxe5 $1) 25... Qc5 26. Qf7+ $1 Kd8 27. b4 $3 {[#]} (27. Rd6+ $4 Bd7 $8 $19) (27. e6 $2 Nc6 $1) 27... Qxb4 (27... Qb5 28. a4 $1 Qxa4 29. Qxd5+ $8) (27... Qe7 28. Qg8+ $8) 28. Rd6+ $8 Bd7 29. Qf8+ $8 Kc7 30. Rxd7+ $8 Nxd7 31. Qxb4 $18) 18. g4 $1 (18. Rh3 $1 cxd4 19. Qh8+ $8 Kf7 20. Rg3 $8 {(as in 17...f6, but with pawn on f5 instead of f6)} g6 21. Nxg6 $8 Nxg6 22. Qh5 $8 Ke8 23. Rxg6 $1 (23. Nxd5 $1) 23... Kd7 24. Nxd5 $8 (24. Qh8 $2 dxc3 $8 25. Rg7 cxb2+ 26. Kxb2 Nc6 {: no exf6}) 24... exd5 25. Qh8 $8 {(with Pf6, we played 25 Rxf6! but not 25 Qh8? fxe5!)} Nc6 26. Rg7 $8 $18) 18... fxg4 $8 19. Rh4 $3 {[#]the "g" file will complete "h" column. And sometimes even the "f" column.} (19. Qh8+ $6 { (waste of time)} Kf7 20. Qh5+ $8 g6 $2 (20... Kg8 $1) 21. Qxg4 $8 $18 {for Nxg6!}) 19... cxd4 20. Qh8+ $8 Kf7 21. Rxg4 $8 Ke8 $1 (21... g6 22. Rg3 $3 {[#]} (22. Nxg6 $1 Nxg6 23. Qh5 $8) 22... dxc3 23. Nxg6 $8 Nxg6 24. Rf3+ $8) (21... dxc3 22. Rxg7+ $8 Ke8 23. Rxe7+ Kxe7 24. Qf6+ $1 Ke8 25. Nh5 $3 $18) 22. Rxg7 $8 Qxg7 23. Qxg7 dxc3 24. bxc3 $1 {Perhaps not the best, but the most informative.} (24. Qg4 $1 cxb2+ 25. Kxb2 Nc6 (25... Nbd7 26. Nxe6 $8 Nxe6 27. Qxe6+ Kd8 28. Qxd5) (25... a5 26. Nxd5 $1) 26. Qh5+ $8 Ke7 27. Qh4+ $8 Ke8 28. Qh8 $1 Ne7 (28... Ke7 29. Qf6+ $1 Ke8 30. Nh5 $1) 29. Qh5+ Kd8 30. Qf7 $1 Nfg6 31. Nxg6 Nxg6 32. Qxg6 a5 (32... Kc7 33. f4 $1) 33. Qf6+ Ke8 34. Qh8+ $1 Kd7 ( 34... Ke7 35. f4) 35. Qg7+ (35. f4 Ra6) 35... Kd8 36. Qf8+ Kd7 37. Qd6+ Ke8 38. Qc7 $1 a4 39. f4 {: it will be difficult to hold}) (24. b3 $1 Nbd7 25. Nh3 $1 (25. Qh8 $1) 25... Kd8 26. Ng5 $1 b6 27. f4 Bb7 28. f5 $1 exf5 29. e6 Kc7 30. e7 $1 Kd6 31. Qf7 $1 d4 32. e8=Q Rxe8 33. Qxe8 Bd5 34. Qe2 $1 Ne5 35. Qf2 $1 $18) ( 24. Nh5 Nbd7 25. Qg8) 24... Nbd7 25. Qh8 $1 {Threatens e6 pawn.} (25. Nh5 {is much less convincing :} Kd8 26. Nf6 $1 b5 27. f4 $1 Nxf6 $1 (27... Rb8 28. f5 $1 Rb6 {(...exf5 Nxd5!)} 29. Nxd7 Nxd7 30. Qg8+ $1 Kc7 31. fxe6 $1) ( 27... Bb7 28. f5 $1 Bc6 29. Nxd7 Nxd7 30. fxe6 $1 Nb6 31. e7+ $1 Kc8 32. Qf7 $1 ) 28. exf6 Nd7 29. f7 $1 Rb8 30. f5 $1 {(the Pf7 is worth more than a knight, it seems)} (30. f8=Q+ Nxf8 31. Qxf8+ Kc7 32. Qc5+ Kb7 $1) 30... exf5 $8 31. Qg5+ Kc7 32. Qf4+ Kb7 $1 33. Qd6 $1 a5 34. a3 a4 35. Kd2 Ra8 $1 (35... Ka7 $2 36. Qc7+ Ka8 37. Ke3 $1) 36. Qxd5+ Kb8 $1 37. Qxf5 (37. Qxb5+ Kc7 $1 38. Qc4+ Kd6) 37... Kc7 38. Qf4+ Kb7 39. Qe4+ Kb8 40. Qc6 Ra6 41. Qxb5+ Kc7 42. Qc4+ Rc6 43. Qf4+ Kd8 44. f8=Q+ (44. Qxa4 Rf6 $1) 44... Nxf8 45. Qxf8+ Kc7 46. Qf4+ Kb7 47. Qxa4 Kc7 {looks like a fortress}) (25. Ne2 $1 a5 26. Nd4 Ra6 27. f4 Rc6 $1 28. a4 $1 Rb6 (28... Rxc3 $2 29. f5 $1) 29. Qh6 Ke7 30. Qh4+ Ke8 31. Qh5+ Kd8 (31... Ke7 32. f5) 32. Qf7 Ra6 33. Kd2 Rb6 34. f5 $1) 25... Ke7 (25... Kf7 26. Nh3 $1 (26. Nh5 $1 Rb8 27. f4 b5 28. Qg7+ Ke8 29. Qg8 $1 Ke7 30. f5 $1) 26... Ke7 27. Ng5 $1 a5 $1 {(for ...Ra6)} (27... b5 28. f4 $1 Bb7 29. Qg7+ Kd8 30. f5 $1) 28. f4 $1 (28. c4 $1 dxc4 29. Qh4 $1 Nxe5 $6 {(...Ke8 Ne4!)} 30. Nf3+ $1 Kd6 31. Qd4+ $8) 28... Ra6 29. c4 $1 dxc4 30. Qh4 $1 b5 31. Ne4+ Kf7 32. Qd8 $3 $18) 26. Ne2 $3 {[#]To d4.} (26. Nh5 $1 Kd8 27. Qg8 $1 a5 $1 28. Ng7 $1 Kc7 29. f4 (29. Nxe6+ Nxe6 30. Qxe6 Ra6 31. Qxd5 Nb8 $1) 29... Ra6 30. f5 $1 exf5 31. e6 Nxe6 32. Nxe6+ Rxe6 33. Qxe6 Nc5 34. Qxd5 b6 {: the "fortress" can be undermined by the arrival of the White King on e7, via the "h" file}) 26... b6 (26... Kd8 27. f4 $1 Kc7 28. Nd4 $1 b5 29. f5 $1 exf5 30. e6 Nxe6 31. Nxe6+ Kb7 32. Qg7 Rb8 33. Nf4) (26... a5 27. Nd4 Ra6 28. c4 $1 dxc4 29. Qh4+ $8 Ke8 30. Nb5 $1) 27. f4 $1 Bb7 28. f5 $1 exf5 29. Qg7+ Ke8 30. Nd4 $1 Rc8 31. e6 $1 Nxe6 32. Nxe6 Rc6 33. Qh8+ Ke7 34. Ng7 $3 {[#]} (34. Nd8 $6 Rh6 $1 35. Qxh6 Kxd8 36. Qd6 a5 $1) 34... Kd6 (34... Rf6 35. Qe8+ Kd6 36. Qe3 $1 Kc7 (36... Rf8 37. Qf4+ $1 Ke7 38. Qb4+ $1) 37. Ne8+ $1 Kc8 38. Nxf6 Nxf6 39. Qxb6 Nd7 40. Qe6 f4 41. c4 $1) 35. Qh2+ (35. Nxf5+) 35... Ke7 36. Qh4+ $1 Kd6 (36... Rf6 37. Nh5 $1 {: as in the 34th move, Pb6 will be taken, unlike the 26th move variant}) 37. Qf4+ $1 ({Less precise} 37. Ne8+ Ke6 38. a4 $6 Rc4 $1) 37... Ke7 38. Qg5+ $8 Kd6 39. Ne8+ $8 Ke6 40. a4 $1 {[#]Very embarrassing, to say the least.} f4 (40... b5 41. a5 Kf7 42. Qd8 $1) (40... Rc4 41. Qe3+ $1 Re4 42. Qh6+ $1 Ke7 43. Nd6 $1) ( 40... Rxc3 41. Ng7+ $1 Kf7 42. Nxf5) (40... a5 41. Qd8 $1 {(the same move on .. .Nc5)} Rc4 42. Nc7+) 41. Ng7+ $1 (41. Qxf4 Ke7 $1) 41... Kd6 (41... Kf7 42. Qd8 $1 {(or first Qxd5+!)} Nc5 43. Nf5 $1) 42. Qxf4+ $1 (42. Qd8 $6 Rxc3) 42... Ke7 43. Qh4+ $1 Kd6 44. Ne8+ $1 (44. Qg3+ $1 Ke7 (44... Kc5 {leads to a model mate in 2}) 45. Qe1+ $3 Kd8 46. Qh4+ $8 {(bK has no more access to d6)} Kc7 47. Qh2+ $8 Kd8 48. Qh8+ $8 Kc7 (48... Ke7 49. Nf5+ $1) 49. Ne8+ $8 Kb8 50. Nf6+ $8 Kc7 (50... Rc8 51. Nxd7+) 51. Nxd5+ $8 Kd6 52. Qd8 $3 Rc8 (52... Bc8 53. c4 $1) 53. Qe7+ $8 Kc6 54. Qe6+ Kc5 55. Nb4 $1 {with mate}) 44... Ke6 45. Qg5 $3 {[#] As above (40th move), Pf5 less.} Rc4 46. Qe3+ $1 Re4 (46... Ne5 47. Ng7+ $1 (47. Qxb6+ Bc6) 47... Kf6 48. Nh5+ Ke6 49. Qh6+ Kd7 50. Qg7+) 47. Qh6+ $1 Ke7 48. Nd6 $8 Ba8 49. Nxe4 dxe4 50. a5 $1 bxa5 51. Qxa6 Bd5 52. c4 Be6 53. Qxa5 e3 54. Qa3+ Kd8 55. Qxe3 Bxc4 56. Kb2 1-0 [Event "last black move ?"] [Site "?"] [Date "1979.??.??"] [Round "?"] [White "Borodatov, L."] [Black "1102.84"] [Result "*"] [SetUp "1"] [FEN "Q7/4p1p1/3pK2P/3p1N1P/PP2k2P/5R1P/2P1N2P/8 w - - 0 1"] [PlyCount "0"] [EventDate "1979.??.??"] [SourceDate "2022.01.01"] {Bf8 has been captured at home, the other Black units have been captured by white pawns of the "h" file. Hence promotions of Black pawns "a" and "b" to b1 and a1, after ...axb2 (wP in a2 & b3) then ...bxa3 (after a2-a4); or ... .bxa2 (wP in a3 & b2) then ...axb3 (after b2-b4). The missing 3rd White unit was taken on d5 or d6. However, two wB and one wR are missing. The Black's captures in the West were of the same colour, so necessarily Rook and Bishop, the other bishop being captured on the "d" file. But ...cxBd5? does not fit: there would previously have been Bc4 (or b3 or a2) -d5+, ...c7-c6, Qa8+ leading to a retrostalemate. The only possibility is therefore ...cxBd6! as a last move, following, for example, gxPh6, ...h7-h6 or gxBh5, ...Be8-h5.} -- * [Event "2#"] [Site "?"] [Date "1968.??.??"] [Round "?"] [White "Ellerman, A."] [Black "4888.33"] [Result "1-0"] [SetUp "1"] [FEN "1q5B/1b1R1p1n/n2b1r2/1Q6/p1Pkr2R/3N1PNp/3P3K/5B2 w - - 0 1"] [PlyCount "0"] [EventDate "1968.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1962.??.??"] [Round "?"] [White "Ellerman, A."] [Black "4357.35"] [Result "1-0"] [SetUp "1"] [FEN "K6n/4N1p1/2pBpn2/pB2N1Q1/3pk2r/2q5/2P1bPP1/8 w - - 0 1"] [PlyCount "0"] [EventDate "1962.01.29"] [SourceDate "2022.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1946.??.??"] [Round "?"] [White "Ellerman, A."] [Black "4888.22"] [Result "1-0"] [SetUp "1"] [FEN "2n1N3/1r1p3R/RrQqkNP1/2p5/5BP1/8/b5BK/bn6 w - - 0 1"] [PlyCount "0"] [EventDate "1946.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1964.??.??"] [Round "?"] [White "Mansfield, C."] [Black "1847.36"] [Result "1-0"] [SetUp "1"] [FEN "2n3b1/2KQ1n2/8/pPpR2rp/p1k1NR1r/Pp1p4/3P4/B7 w - - 0 1"] [PlyCount "0"] [EventDate "1964.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1999.??.??"] [Round "?"] [White "Mansfield, C."] [Black "1852.57"] [Result "1-0"] [SetUp "1"] [FEN "BB1Q4/4p3/KPPbp3/p2k1P2/r1p1p2r/pP3Pp1/3NN3/3R4 w - - 0 1"] [PlyCount "0"] [EventDate "1999.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1976.??.??"] [Round "?"] [White "Mansfield, C."] [Black "1884.03"] [Result "1-0"] [SetUp "1"] [FEN "6r1/3Q1b1N/6pK/1p2k3/5R2/3B1R2/3brp1B/3n4 w - - 0 1"] [PlyCount "0"] [EventDate "1976.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1955.??.??"] [Round "?"] [White "Pechenkin, PS."] [Black "1588.12"] [Result "1-0"] [SetUp "1"] [FEN "1R3K2/3p4/3p1Qb1/2k1n3/R7/N1NP1n2/1B3r1b/7B w - - 0 1"] [PlyCount "0"] [EventDate "1955.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1961.??.??"] [Round "?"] [White "Fillery, WEF."] [Black "4855.34"] [Result "1-0"] [SetUp "1"] [FEN "4N3/2np1pP1/1bp1kP2/rRr3P1/2q1N3/1Q6/p3B1KB/4R3 w - - 0 1"] [PlyCount "0"] [EventDate "1961.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1961.??.??"] [Round "?"] [White "Haring, J."] [Black "4588.23"] [Result "1-0"] [SetUp "1"] [FEN "8/1b2P3/2n4K/qpNN3R/3k4/1B2pR1n/1P1bp2B/2Q1r3 w - - 0 1"] [PlyCount "0"] [EventDate "1961.??.??"] [SourceDate "2022.01.01"] {After G.Paros 1955.} -- 1-0 [Event "2#"] [Site "?"] [Date "1974.??.??"] [Round "?"] [White "Zavodny, Z."] [Black "4482.27"] [Result "1-0"] [SetUp "1"] [FEN "5KB1/1Q6/p7/p1PNp1N1/3k1p1r/2R1p3/b1pPpb2/B6q w - - 0 1"] [PlyCount "0"] [EventDate "1974.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1932.??.??"] [Round "?"] [White "Seidemann, F."] [Black "1558.32"] [Result "1-0"] [SetUp "1"] [FEN "3N1rBB/5pn1/R6b/1RP1k1nQ/4p3/2P1N1P1/8/6K1 w - - 0 1"] [PlyCount "0"] [EventDate "1932.??.??"] [SourceDate "2022.01.01"] {Inventor (?) of the self-helpmate in 1931.} -- 1-0 [Event "2#"] [Site "?"] [Date "1962.??.??"] [Round "?"] [White "Musante, H."] [Black "1685.03"] [Result "1-0"] [SetUp "1"] [FEN "2Kb1nN1/3p4/3BkpB1/1N6/2pQ4/4r2r/b7/8 w - - 0 1"] [PlyCount "0"] [EventDate "1962.01.29"] [SourceDate "2022.01.01"] {Presented at the 2018 English Championship.} -- 1-0 [Event "2#"] [Site "?"] [Date "2000.??.??"] [Round "?"] [White "Bogdanov, E."] [Black "1552.23"] [Result "1-0"] [SetUp "1"] [FEN "2R2Q2/8/K1Pr2N1/1pkp2B1/7R/bP6/1pB5/1N6 w - - 0 1"] [PlyCount "0"] [EventDate "2000.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "3#"] [Site "?"] [Date "1964.??.??"] [Round "?"] [White "Loschinsky, L."] [Black "3858.27"] [Result "1-0"] [SetUp "1"] [FEN "B1K4n/6R1/R5p1/4pkr1/ppp1p2r/2p1B1PP/4NN1n/qb6 w - - 0 1"] [PlyCount "0"] [EventDate "1964.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "3#"] [Site "?"] [Date "1964.??.??"] [Round "?"] [White "Gebelt, V."] [Black "4825.54"] [Result "1-0"] [SetUp "1"] [FEN "r6B/1NP4q/p4r2/2pPn1R1/1pPkN1BR/pK1P4/2QP4/8 w - - 0 1"] [PlyCount "0"] [EventDate "1964.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "4#"] [Site "?"] [Date "2004.??.??"] [Round "?"] [White "Tribowski, M."] [Black "1454.57"] [Result "1-0"] [SetUp "1"] [FEN "1Q6/4p2K/1pPPp1PB/2p4p/2B1kp2/1P1RN3/r4pP1/3b3n w - - 0 1"] [PlyCount "7"] [EventDate "2004.??.??"] [SourceDate "2022.01.01"] 1. c7 $1 {(2 Qb7+)} (1. Qc8 $2 Bg4 $1 2. Nxg4 e5 $1) (1. Qf8 $2 f1=Q $1 2. Nxf1 e5 $1 (2... Rf2 $2 3. Nd2+)) (1. dxe7 $2 f1=Q $1) (1. Qg8 $2 Bg4 $1) 1... fxe3 (1... exd6 2. Qc8 $1 {[#](3 Dxe6#)} Bg4 3. Nxg4 e5 (3... hxg4 4. Qxe6#) 4. Nf6#) ( 1... Ra7 2. Qf8 $1 {[#](3 Qxf4#)} f1=Q 3. Nxf1 e5 (3... exd6 4. Qxf4#) 4. Nd2#) 2. Rxe3+ Kd4 3. Qh8+ e5 4. Qxe5# {Dresde-Brunner theme, say the experts. A tortuous but interesting problem.} 1-0 [Event "8#"] [Site "?"] [Date "2014.??.??"] [Round "?"] [White "Kraetschmer, R."] [Black "1878.74"] [Result "1-0"] [SetUp "1"] [FEN "1n4Bn/r3N1pK/p4b2/1P4R1/2pPNP2/2PkPP1R/p4QP1/1b1r4 w - - 0 1"] [PlyCount "15"] [EventDate "2014.??.??"] [SourceDate "2022.01.01"] 1. Rc5 $1 (1. Nc5+ $2 Kxc3+ {: white king must be parked}) 1... axb5 (1... Nf7 $2 2. Bxf7 axb5 3. Nd5 $1 Nc6 (3... Na6 4. Ng3) 4. Bg6 {(or other)} Re7 5. Nexf6+ Re4 6. Bxe4#) 2. Bxc4+ $1 bxc4 3. Rh1 $3 {[#]} Rxh1+ (3... Bc2 $2 4. Rxd1+ Bxd1 5. Qd2#) 4. Rh5 $1 Rd1 (4... Rxh5+ $2 5. Kg8 a1=Q 6. Qd2#) 5. Rh1 $3 {[#]} Rxh1+ 6. Kg8 Rd1 7. Nc5+ Kxc3 8. Nd5# $1 {Nice tribute (in duplicate) to Dr. Lepuschütz.} 1-0 [Event "h#3 2 sol"] [Site "?"] [Date "1965.??.??"] [Round "?"] [White "Seneca, C."] [Black "3041.00"] [Result "1-0"] [SetUp "1"] [FEN "8/3b4/8/5N2/B3k2q/8/3K4/8 b - - 0 1"] [PlyCount "0"] [EventDate "1965.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "h#4 2 sol"] [Site "?"] [Date "2018.??.??"] [Round "?"] [White "Ramaswamy, V."] [Black "0341.14"] [Result "1-0"] [SetUp "1"] [FEN "8/8/5p2/3kb1pN/K5pr/6Bp/7P/8 b - - 0 1"] [PlyCount "0"] [EventDate "2018.??.??"] [SourceDate "2022.01.01"] 1-0 [Event "s#3"] [Site "?"] [Date "1968.??.??"] [Round "?"] [White "Schiffmann, An"] [Black "0258.35"] [Result "0-1"] [SetUp "1"] [FEN "2b5/6p1/1R4P1/2Nk4/1Ppnn1pN/2P1p1B1/5pB1/3R1K2 w - - 0 1"] [PlyCount "0"] [EventDate "1968.??.??"] [SourceDate "2022.01.01"] {Everything is prepared, but...} -- 0-1 [Event "s#4 b) Pd7 on b7"] [Site "?"] [Date "1968.??.??"] [Round "?"] [White "Weber, W."] [Black "0230.53"] [Result "0-1"] [SetUp "1"] [FEN "5b1k/3Pp1p1/1PP3P1/1PKpR3/3R4/8/8/8 w - - 0 1"] [PlyCount "0"] [EventDate "1968.??.??"] [SourceDate "2022.01.01"] 0-1

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