may 16 2023

For this May session, the Master and the listeners got used to the regular cut after an hour!

The game of the day turned the neuron with its abundance of variations which left little room for fairy tale.

Below is the report of the session with the Master still at the top.

Good reading to all.

P.S.: next lesson is scheduled for June 24 (see agenda)

 

 

 


Master's words


Montherlant

Sevigne"A single nation that manages to lower the intelligence, the morality, the quality of man on almost the entire surface of the earth, has never been seen since the globe existed. I accuse the United States of being in a constant state of crime against humanity" (H. de Montherlant). Again, HdM did not know the rest...    

"A breastplate against pleasure, a spider's web against danger" (Marie de Rabutin, known as the Marquise de Sévigné, about the condom).

"Mercy! -- I've used up all my reserves" ("Les pleins pouvoirs" 1997).

"Being so pretty and being called Constance, what a problem !" (G. Barray in "Les trois mousquetaires" 1961).

"How many servants does it take to make a governing majority? Take three parts servility, three parts rapacity, five parts stupidity and you have the formula" (O. Mirbeau).Mirbeau 1

"No one who has not been a member of parliament would have any idea of the human vacuum" (L. Daudet).

"If you were my husband, I would serve you a poisoned cup of tea -- If you were my wife, Madam, I would drink it" (Lloyd George's reply).   

"Chance only favors prepared minds" (L. Pasteur, quoted by M. Niemeijer).

"I like the peasants, they are not educated enough to be stupid" (Ch.-L. de Montesquieu).

"Ecology, yes; environmentalists, no" (Ph. Lamour, 1978).

"The excuse of lack of time is comparable to that of the assassin who maintains that he was drunk at the time of the crime. From an experienced master, the inability to manage the clock is as serious as a miscalculation" (A. Alekhine).

Two breakthroughs on squares of different colors in a real game: an echo-chameleon. I knew the two opponents: the player of White (extremely sympathetic pedagogue) was my age, his opponent (just as adorable) was a regular at French tournaments. Then a nice exercise from the Italian maestro who deals with the fight Rook and Knight against Rook in a much more affordable way than his compatriot Centurini !

The pawn endgame is infinitely simpler than my game of Bagneux 1976 commented here  http://lecoursdumaitre.e-monsite.com/pages/cours/cat-2009/14-avril-2009.html  but the idea is basically the same. Finally a study in the form of a festival, the figures generously offering the maximum... Their soul will survive, of course !

As exercises, two Bishop endgames which were lost, but could have been saved by... the same idea. A study where the win will go through a reciprocal zugzwang but beforehand, be vigilant on the 3rd move. Finally, two Rooks against what are not yet two Queens.

Gipslis 1Botvinnik 1Today's game is preceded by two others of theoretical importance, which nonetheless raise questions: compare the games on this opening from 60 years ago with those of the last decade; one can wonder who plays the best. In some cases, the main line is just... the same as it was then.

The Viking gets a big advantage. When your name is Aïvars, it's normal to have a spicy game: at least that's what all those think who, like your canister master, consume a lot of ajvar made from red pepper and chilli . The exchange sacrifice of the ex-world champion was very overestimated, the newspapers of the time harping on his praise, while it is … losing. The rebuttal is a brilliant move from the Rook, but two other moves from the same Rook also refuted, a little earlier, the comments of the said ex-champion. Even 3; and also a move of his own Rook!

Shinkman 2Fomichev 1Training: a series a little more difficult than usual, the 2nd, 5th & 9th are the easiest. Tries especially in the 3rd, 4th, 8th & 11th. The last has a twin. A superb 3# that I discovered half a century ago during the Spassky-Fischer match. We leave the solution (please hide it) of the superb and difficult "modern bohemian" in 4 moves.

Three helpmates 2#, first quadruplets: the 2nd problem by eliminating the matting piece, and so on. The next one has "set play" (henceforth called 1.5# helpmate): be careful. The last one has a twin, which I thought was more difficult. Model mates in the helpmate 3#. A nice long helpmate where the 1st white move is the most difficult. Model mates in selfmate 3#. Movements of the White King in the one in 4. Finally the traditional "Gamni" with the glued solution, due to my leniency which surprises me myself.     

Have a nice treat.  Adeus até à próxima.  


PGN Reader

Master's diagrams

[Event "?"] [Site "?"] [Date "1988.??.??"] [Round "?"] [White "Razuvaiev Y, Ostojic P"] [Black "0004.76"] [Result "1-0"] [SetUp "1"] [FEN "8/4k3/p2p2p1/P1pPn2p/1pP1P2P/1P1NK1P1/8/8 w - - 0 1"] [PlyCount "13"] [EventDate "1988.??.??"] [SourceDate "2010.01.01"] {What is the only clear winning move? Provided you have planned the 3rd ! EFV 451 ; 46/(895), F25.} 1. g4 $3 {[#]} (1. Nxe5 $2 dxe5 2. g4 Kd7 $11) (1. Nf2 $6 Kf6 $1 (1... Nf7 $1) 2. Kf4 Kf7 3. g4 $2 $11 hxg4 $1 4. Nxg4 $2 Nxc4 $1 $19) ( 1. Nf4 $6 Ng4+ $1 2. Kd2 Ne5 3. Ne6 Kd7 $8 4. Ke3 Ng4+ 5. Kf4 Nf2 $1 (5... Ne5 $2 6. Nxc5+ $1) 6. e5 Nd3+ $1 7. Kg5 Nxe5 8. Nf4 $8 Kd8 9. Kf6 $1 (9. Nxg6 $2 Nxc4 $3 $11) 9... Kd7 10. Ne2 {Z} Kd8 11. Ke6 Kc7 12. Nf4 Nf3 $1 13. Ke7 $1 Nd2 14. Ne6+ Kb7 15. Kxd6 Nxb3 16. Nf4 $1 Nxa5 17. Kxc5 $8 b3 18. Nd3 $8 Kc7 19. Kb4 $1 $18) 1... Nxg4+ (1... hxg4 2. Nxe5 $8 dxe5 3. Kf2 $18) (1... Nxd3 2. Kxd3 hxg4 3. Ke3 $8 Kf6 4. Kf4 $8 g3 5. Kxg3 $8 Ke5 6. Kg4 $1 $18) (1... Kf6 2. gxh5 $8 gxh5 (2... Nxd3 3. Kxd3 $18) 3. Nf4 $8 Ng4+ 4. Kd2 Ke5 5. Nxh5 $1 (5. Ne6 $1 Kxe4 6. Nc7 $8) 5... Kxe4 6. Ng7 $1 Nh6 (6... Ne5 7. Ne8 $1 Nf7 8. h5 $1 Kf5 9. Nc7) 7. h5 Ke5 8. Ne8 $1 Nf5 9. Kd3 Nh6 10. Nc7 $18) (1... Nd7 2. gxh5 gxh5 3. Kf4 Kf6 4. e5+ $1 dxe5+ 5. Ke4 $18) 2. Kf4 $8 Nf6 (2... Kf6 3. e5+ $3 {[#] (sacrifice on different color: a kind of echo-chameleon)} dxe5+ (3... Nxe5 4. Nxe5 $8 dxe5+ 5. Ke4 $8 g5 6. hxg5+ $8 Kxg5 7. Kxe5 $18) 4. Ke4 $1 g5 5. hxg5+ $8 Kxg5 6. Nxc5 $1 h4 7. d6 $1 Kf6 8. Kd5 $1 (8. Kf3 $1) (8. Nxa6 $4 h3 $8 9. Kf3 e4+ $3 10. Kg3 e3 $1 11. Nxb4 e2 $1 12. Nc2 {(Nd3 ...h2!! Kg2 ... Nf2!!)} h2 $8 13. Kg2 Ne3+ $3) 8... h3 9. Ne4+ $8 {followed by Ng5+ or d7+-}) 3. e5 $3 {[#]} dxe5+ (3... Ne8 4. exd6+ Kxd6 (4... Nxd6 5. Nxc5) 5. Kg5 $18) 4. Nxe5 $1 (4. Kxe5 $1 Nd7+ 5. Ke4) 4... Kd6 5. Nxg6 Nxd5+ 6. cxd5 $8 c4 (6... Kxd5 7. Ke3 $1 c4 8. Nf4+ $1) 7. Ke4 (7. Ke4 cxb3 8. Ne5 $1 (8. Kd3 $1) 8... Kc5 (8... b2 9. Nc4+ $8) 9. Nd3+ $1 (9. Kd3 $1 Kxd5 10. Nd7 $1) 9... Kc4 10. d6 $18) 1-0 [Event "?"] [Site "?"] [Date "1965.??.??"] [Round "?"] [White "Paoli, E."] [Black "0434.20"] [Result "1-0"] [SetUp "1"] [FEN "8/3Pb3/1k3Nr1/8/1P6/7R/3K4/2n5 w - - 0 1"] [PlyCount "15"] [EventDate "1965.??.??"] [SourceDate "2010.01.01"] {It seems that we can easily win a piece, but also loses it, or that we transpose in Rook & Knight against Rook. So ?} 1. Nd5+ $8 (1. Kxc1 $2 Rxf6 $11) 1... Kb5 $1 (1... Kb7 $6 2. Nxe7 $8 Rd6+ 3. Kxc1 $8 Rxd7 4. Rh7 $1 Rc7+ 5. Kb2 $18) 2. Nxe7 $8 (2. Kxc1 $2 Bg5+ $1 3. Kc2 Rd6 4. Rh5 Bd8 $8 5. Kb3 Kc6 $1 6. Kc4 Rxd7 $11) 2... Rd6+ 3. Kxc1 $8 Rxd7 4. Rh5+ $3 {[#]} (4. Rb3 $2 {(or on h4)} Rxe7 $11) (4. Re3 $2 Kxb4 $8) (4. Rh7 $2 Rc7+ $1 5. Kb2 Ka4 $8 6. Rf7 Rb7 $1) 4... Kxb4 (4... Kc4 5. Nc6 $1) 5. Nd5+ $8 (5. Nc6+ $2 Kb3 $1 $11) 5... Kb3 {Or on a3.} (5... Kc5 6. Nf6+ $8) (5... Kc4 {(or on a4)} 6. Nb6+ $8) 6. Rh3+ $8 Ka2 7. Nb4+ $8 (7. Nc3+ $6 Kb3 8. Nd5+ $8) (7. Rh2+ $6 Kb3 8. Rh3+ $8) 7... Ka1 8. Ra3# 1-0 [Event "?"] [Site "?"] [Date "1991.??.??"] [Round "?"] [White "Landa K, Kozlov VN"] [Black "0000.33"] [Result "0-1"] [SetUp "1"] [FEN "8/p7/6p1/2pp4/2k2K1P/2P5/PP6/8 b - - 0 1"] [PlyCount "21"] [EventDate "1991.??.??"] [SourceDate "2010.01.01"] {52/(695)} 1... d4 $8 (1... Kd3 $2 2. Kg5 $8 d4 3. Kxg6 $1 Kc2 4. cxd4 $8 (4. h5 $2 d3 $8 {for a ...Kxb2!}) 4... cxd4 $8 5. h5 $8 $11) (1... a5 $2 2. Ke3 $8 a4 3. Kd2 $8 $11) 2. cxd4 (2. Ke4 dxc3 $1 $19) 2... cxd4 $8 3. Ke4 $1 {Now, Black has pushed his pawn to a5. Was it the right way to win ?} (3. a4 Kd3 $1 $19) 3... a6 $3 {[#]} (3... a5 $2 4. a4 $3 {[#]ZZ} Kc5 $8 5. Kd3 $8 (5. Kf4 $2 Kd5 $1 $19 {or ...Kb4!}) 5... Kd5 $8 6. Kd2 $8 Kc4 7. Kc2 $8 Kb4 (7... d3+ 8. Kd2 $8 Kd4 $8 9. b3 $8 Ke4 $8 10. b4 $8 axb4 11. a5 $8 b3 $1 12. a6 $8 b2 $1 13. a7 $8 b1=Q 14. a8=Q+ $8 Kf4 15. Qf8+ $8 {(Qa4+? ...Kg3!!)} Kg4 16. Qc8+ $8 Kxh4 17. Qh8+ $1 Kg3 18. Qe5+ $8) 8. Kd3 $8 Kxa4 9. Kc4 $8 (9. Kxd4 $2 Kb3 $8 $19) 9... d3 $8 10. Kc3 $3 $11 {[#](Landa-Kozlov)} d2 11. Kxd2 $1 Kb3 12. Kc1 $8 $11) (3... d3 $2 4. Ke3 $1 (4. Kf3 $6 Kd4 5. Kf2 $8 Ke4 6. Ke1 $8 $11) 4... a6 $8 5. Kd2 Kd4 $1 6. b3 a5 $1 7. a3 Ke4 $8 8. b4 $1 (8. Kd1 $1) (8. a4 $2 Kd4 $8 $19) 8... axb4 $8 9. axb4 Kd4 $8 $11) 4. a3 (4. a4 a5 $3 {[#]ZZ} 5. Kf4 Kb3 $1 $19) (4. Kf4 Kd3 $1 (4... a5 $1 5. Ke4 a4 $8 6. Kf4 d3 $1 {(or ...Kd3!)} 7. Ke3 a3 $3) 5. Ke5 Ke3 $1 $19) 4... d3 $8 (4... Kb3 $4 5. Kxd4 $8 Kxb2 6. a4 $3 {[#]} (6. Ke5 $2 $11 {KL}) 6... Kb3 7. Ke5 $1 Kxa4 8. Kf6 $8 $18 {: Qh8 will control a1 or the bP will only be on a3}) (4... a5 $2 5. a4 $8 $11 {as above}) (4... Kc5 $4 5. Kd3 $1 a5 6. b3 $8 Kd5 7. b4 $8 $18) 5. Ke3 Kb3 $8 6. Kxd3 {White King is on d3 instead of d4 (see the line 4...Kb3??) This which reverses everything !} Kxb2 $8 7. a4 Kb3 $1 8. a5 Kb4 $1 9. Kd4 Kxa5 $8 10. Ke5 ( 10. Kc5 Ka4 $8) 10... Kb4 $1 {Indeed, black King is on b4 instead of a4.} 11. Kf6 a5 $8 {Qa1 will control h8 or wP will only be on h6.} 0-1 [Event "?"] [Site "?"] [Date "2006.??.??"] [Round "?"] [White "Kralin, N."] [Black "0416.30"] [Result "1/2-1/2"] [SetUp "1"] [FEN "5B2/8/P5P1/7R/4knK1/8/5P2/4nr2 w - - 0 1"] [PlyCount "20"] [EventDate "2006.??.??"] [SourceDate "2010.01.01"] {Do the figures have a soul? In any case, if they are sensitive to jealousy, it will not be in this study.} 1. Re5+ $8 {Gift of the Rook.} ( 1. g7 $2 {(or a7?)} Rg1+ $8 2. Kh4 Nf3#) (1. Rh3 $2 Nxh3 $8 2. Kxh3 Rh1+ $8 3. Kg4 Rg1+ $8 4. Kh5 Kf5 $1 $19) (1. Kg5 $2 Nf3+ $1 (1... Nxh5 $1 2. a7 Nf3+ $8 3. Kxh5 Kf5 $8 4. Kh6 Ra1 $8 5. Be7 Ra6 $1 $19) 2. Kh6 Nxh5 $8 (2... Ra1 $2 3. Rb5 $1) 3. a7 (3. g7 Nf6 $1 {(or ...Nxg7!)} 4. a7 {(Kg6 ...Ke5!)} Kf5 $8 $19) ( 3. Kxh5 Kf5 $1 $19) 3... Ra1 $8 4. Kxh5 (4. g7 Nxg7 $8) 4... Kf5 $8 5. Kh6 Ng5 $1 (5... Rxa7 $1 6. g7 Ra6+ $8 7. Kh7 Ng5+ $8) 6. f4 Rh1+ $1 7. Kg7 Ne6+ $8 8. Kf7 Ra1 $8 9. g7 Rxa7+ $8 10. Kg8 Kg6 $1 11. f5+ Kxf5 $8 12. Kh7 Kg5 $1 13. Kh8 Nxg7 $8 14. Bxg7 Kg6 $8 $19) (1. f3+ $2 Nxf3 $8 {(threatens mate)} 2. Bc5 Nxh5 $8 3. Kxh5 Kf5 $1 (3... Rh1+ $1 4. Kg4 Rh6 $8) 4. Kh6 Kf6 $1 $19) 1... Kxe5 $8 2. Bd6+ $3 {[#]Gift of the Bishop.} (2. a7 $2 Rg1+ $8 3. Kh4 Nf3#) (2. Bg7+ $2 Ke4 $8 3. Kg5 Rg1+ $1 4. Kf6 Rxg6+ 5. Kf7 Rxa6 $19) 2... Kxd6 (2... Ke4 3. Bxf4 $8 Rxf2 $8 4. g7 $1 Rxf4+ 5. Kh5 $1 Rf5+ 6. Kh6 Rf6+ 7. Kh7 Rxa6 8. g8=Q Ra7+ $8 9. Kh8 Nf3 $8 10. Qc4+ Nd4 $8 $11) 3. a7 $8 Ke5 (3... Nxg6 4. a8=Q $8 Ne5+ 5. Kg3 $11) (3... Rg1+ 4. Kxf4 Nd3+ 5. Kf5 $11) 4. a8=Q $8 Rg1+ $1 5. Kh4 $8 Nf3+ $1 {[#]Gift (bicolour) of the Knight.} 6. Qxf3 Kf5 $1 {Queen is in focal position, to hold h1 & g4.} 7. g7 $8 Rg6 $1 (7... Rxg7 8. Qe4+ $8 {idem}) 8. g8=N $3 {[#]From the pawn, even promoted.} (8. g8=Q $2 Rh6+ $8 {with mate}) (8. Qe4+ $2 Kxe4 $8 9. f3+ Kxf3 10. g8=Q Ng2+ $8) 8... Rxg8 $8 9. Qe4+ $3 {[#]Gift of the Queen.} Kxe4 10. f3+ {Again pawn.} Ke3 {Model stalemate. Sacrifice of 4 figures of different nature (and two pawns).} 1/2-1/2 [Event "Spartakiad-08 Preliminaries"] [Site "Moscow"] [Date "1965.08.04"] [Round "2"] [White "Gipslis, A."] [Black "Botvinnik, M."] [Result "0-1"] [ECO "B09"] [PlyCount "66"] [EventDate "1965.08.03"] [EventType "team-tourn"] [EventRounds "5"] [EventCountry "URS"] [Source "ChessBase"] [SourceDate "2001.11.25"] 1. e4 d6 2. d4 Nf6 (2... g6) 3. Nc3 g6 {Vasja Pirc's idea is to play the East-Indian after an open opening (thus without c2-c4).} 4. f4 {The so-called attack "Austrian", considered the only way to create difficulties in the "Pirc defense". Why "Austrian"? Maybe because it was played in 1883 by Miksa Weiss (but, it seems, introduced by J. Cochrane in 1850) .} (4. Bg5) (4. Nf3) (4. f3) 4... Bg7 5. Nf3 (5. e5 Nfd7 (5... dxe5 {(fxe5 ... Nd5= Marshall,F-Pillsbury,H/Cambridge Springs 1904)} 6. dxe5 Qxd1+ 7. Kxd1 Ng4 8. Ke1 f6 $1 9. h3 Nh6 10. Nd5 Kd8 $1) 6. Nf3 c5 7. e6 (7. dxc5 dxe5) 7... fxe6 8. Ng5 Nf6 (8... Bxd4 9. Nb5) 9. dxc5 Nc6 $11) 5... O-O 6. e5 {played for the first time (?) in 1953 by the Austrian Alfred Beni.} (6. Bd3 Nc6 (6... Na6 7. O-O {(e5 ...Nd7)} c5 8. d5 Bg4 {(or ...Nb4 or ..Rb8)} 9. h3 Bxf3 10. Rxf3 Nc7 11. a4 a6 {Mareco,S (2629)-Almeida Quintana,O (2535)/Tornelo INT 2021}) ( 6... c5 $6 {(played by computers at 3300 Elo points)} 7. dxc5 dxc5 8. e5 Nd5 9. Nxd5 Qxd5 10. Qe2 Bf5 11. Bxf5 gxf5 12. Be3 $14) (6... Bg4 7. h3 Bxf3 8. Qxf3 e5 $6 {(...Nc6)} 9. dxe5 dxe5 10. f5 $16 {Dubov,D (2710)-Nepomniachtchi,I (2789)/chess24.com 2021}) (6... Nfd7 7. O-O c5 8. d5 Na6 9. Be3 Rb8 {Stoleriu, G (2412)-Manolache,M (2506)/Alba Iulia 2021}) (6... Nbd7 $6 7. e5 Ne8 {(Weiss, M-Paulsen,L/Nuremberg 1883)} 8. Ng5 $1 h6 9. Nxf7 $1 {or Bxg6!}) 7. e5 (7. O-O Bg4 {(...e5 -- fashionable in the 21st century -- Zwirs,N (2450)-Sethuraman,S (2620)/ Castelldefels 2021 and Fier,A-Aravindh,Ch / La Roda 2023)} 8. e5 dxe5 {(...Nd7) } 9. dxe5 $8 Nd5 10. h3 Nxc3 11. bxc3 Bf5 $1 {(or ...Bxf3 Donner)} 12. Qe2 Qd7 13. Rd1 Rfd8 {Matsenko,S (2429)-Novikov,S (2523)/Budva 2009}) (7. h3 e5 8. fxe5 dxe5 9. dxe5 Nd7 $1) (7. d5 $6 Nb4 $11) 7... dxe5 (7... Nd7 8. h4) 8. fxe5 (8. dxe5 Nd5) 8... Nh5 $1 {[#]} 9. Be3 (9. Be4 Bg4) 9... Bg4 $1 (9... f6 10. exf6 exf6 11. Qd2) 10. Bc4 (10. Be4 f6 $1 {(Parma in 1971)} 11. Bxc6 bxc6 12. exf6 Nxf6 13. O-O Nd5 $11 {Gharibyan,M (2490)-Hakobyan,A (2626)/Yerevan 2023}) (10. Be2 f6 $1 11. exf6 exf6 12. Qd2 {(d5 ...Ne7 or Qd3 ...Qd6!)} Ne7 $1 13. Bd3 Bxf3 14. gxf3 Qd7 $11 {Tazbir,M (2506)-Chatalbashev,B (2539)/Zagnansk 2022}) 10... Na5 $1 {[#](the second Marginal Knight)} (10... Bxf3 $2 11. Qxf3 Nxd4 12. Qe4 $3 $16 {for g4 or 0-0-0 Klovans,J-Vadasz,L/Tbilisi 1972}) 11. Be2 c5 $1 12. dxc5 (12. d5 Bxf3 {(...Qb8 or ...Qb6)} 13. Bxf3 Nc4 14. Qe2 Nxe5 $1 {(...Nxe3?! Qxe3 ...Qc7? g4!+-)} 15. Bxh5 gxh5 16. Qxh5 $6 {(Sax,G (2445)-Botterill,G (2410)/Graz 1972 14/196)} Qb6 $1 $15 {rather than ...Nc4 Bh6!}) 12... Nc6 (12... Qb8 $11) 13. O-O Nxe5 14. Qxd8 Rfxd8 15. Nxe5 Bxe2 16. Nxf7 Bxf1 17. Nxd8 Bxg2 18. Kxg2 Rxd8 19. Rd1 Rxd1 20. Nxd1 a6 21. b4 Kf7 $11 {Ribli,Z-Vadasz,L/ Hungary 1972}) (6. Be2 c5 $1 (6... e5 $2 7. dxe5 $1 dxe5 8. Qxd8 Rxd8 9. Nxe5 $16 {Nakamura,H (2736)-Fedoseev,V (2676)/chess.com 2020}) 7. dxc5 (7. d5 b5 $1 8. e5 dxe5 9. fxe5 Ng4 {Kalogeris,I (2409)-Bosiocic,M (2555)/ch-EUR Vrnjacka Banja 2023}) 7... Qa5 8. O-O Qxc5+ 9. Kh1 Nc6 10. Nd2 (10. Qe1 $1 Bg4 11. Bd3) 10... a5 $1 (10... Nd4 11. Nb3 Nxb3 12. axb3 b5 13. b4 $3 Qxb4 14. e5 $1 dxe5 15. fxe5 Ng4 $8 {(...Nd7? Nd5!+-)} 16. Na2 $3 {(Nd5? ...Qc5!)} Qa4 17. Bf4 $1 h5 18. Nc3 $1 Qb4 19. Nd5 $1 Qxb2 20. Rb1 Qa2 21. h3 $1 $16 Nxe5 $2 {(...Nh6)} 22. Nxe7+ $8 Kh7 23. Bxe5 $1 Bxe5 24. Nxg6 $3 Kxg6 25. Rxb5 $1 $18) 11. a4 (11. Nc4 Bg4 $1 12. Be3 Qxc4 $1 $11) 11... Nb4 12. Nb3 Qb6 13. g4 $2 (13. Bf3 $6 Be6 $1 14. Nd4 Bc4 $15) (13. Nd2 $11) 13... Bxg4 $3 {[#]} 14. Bxg4 Nxg4 15. Qxg4 Nxc2 16. Nb5 (16. Qd1 $2 Qxb3 17. Ra3 Qc4 $8 $19) 16... Nxa1 17. Nxa1 Qc6 $1 18. f5 $6 ( 18. Qf3) (18. Qg2) 18... Qc4 $1 19. Qf3 Qxa4 20. Nc7 Qxa1 21. Nd5 (21. Nxa8 Rxa8 22. fxg6 fxg6 23. Qf7+ Kh8 24. Bh6 Qxb2 $8 $19) 21... Rae8 22. Bg5 (22. Nxe7+ Rxe7 23. Bg5 Qxb2) 22... Qxb2 23. Bxe7 Be5 24. Rf2 Qc1+ 25. Rf1 Qh6 26. h3 gxf5 27. Bxf8 Rxf8 28. Ne7+ Kh8 29. Nxf5 Qe6 30. Rg1 a4 31. Rg4 Qb3 32. Qf1 a3 33. Rg3 Qxg3 {0-1 Fischer,R-Kortchnoï,V/Curaçao 1962}) (6. Be3 b6 $1 (6... Nc6 7. e5 Ng4 8. Bg1) 7. Qd2 Bb7 8. e5 Ng4 (8... dxe5) 9. O-O-O {Heinemann,T (2507)-Siebrecht,S (2417)/Magdeburg 2020}) 6... Nfd7 (6... dxe5 7. dxe5 (7. fxe5 Nh5 $6 {(...Nd5!=)} 8. Be2 $1) 7... Qxd1+ 8. Kxd1 Rd8+ 9. Bd3 $14) (6... Ng4 $6 7. h3 Nh6 8. g4 $1 dxe5 9. fxe5 f6 10. Bc4+ Nf7 11. Qe2 (11. Be3 $1 $16) 11... Nc6 $1 12. e6 Nd6 $8 13. d5 (13. Bb3 $1) 13... Nxc4 14. Qxc4 Na5 15. Qd3 f5 $6 (15... Qd6 $11) 16. Bg5 (16. Be3) 16... fxg4 $2 (16... b5) 17. hxg4 $2 ( 17. Nh4 $3 $16) 17... Bxe6 $3 $17 {Tang,A (2525)-Sethuraman,S (2644)/Biel 2021} ) 7. h4 {Played by Bronstein from 1958.} (7. Be3 c5 $1 8. exd6 (8. dxc5 $6 dxe5 $1) 8... exd6) (7. Bc4 Nb6 (7... c5 8. e6) 8. Bb3 Nc6 (8... dxe5 9. fxe5 c5 10. dxc5 Qxd1+ 11. Kxd1 N6d7) 9. a4 $1 (9. Be3 Na5 $1 10. Qe2 Nxb3 11. axb3 f6 { Beni,A-Pirc,V/Opatija 1953}) 9... dxe5 (9... a5 $2 10. Ne4 $1 Bf5 11. Ng3 $16 { Lodici,L (2507)-Petrov,M (2463)/Montesilvano 2021}) 10. fxe5 Na5 11. Ba2 c5 12. dxc5 Qxd1+ 13. Nxd1 Nbc4 14. Bf4 $14) 7... Nb6 $6 {Ignore central counterattack, yet necessary.} (7... c5 $1 8. h5 $1 (8. e6 $1 fxe6 9. h5 $1 gxh5 10. Ne4 $1 {(Ng5 ...Nf6 dxc5 Vallejo Pons,F (2698)-Suarez Garcia,C (2400)/ Linares 2014)} cxd4 11. Bd3 h6 $1) 8... cxd4 9. hxg6 (9. Qxd4 dxe5 10. Qf2 { (Qg1 ...e4! Nxe4 ...Nf6!= : Benoit,M-Todorcevic,M/Monte Carlo 1969)} e4 $1 11. Ng5 Nf6 {(...Qb6 Qh4 ...gxh5 Nxh7! Al Hosani,O (2202)-Tukhaev,A (2534)/Abu Dhabi 2021)} 12. hxg6 hxg6 13. Qh4 Qd4 $3 {(Padevsky-Matanovic, La Habana (ol) 1966 2/132)} 14. Ncxe4 Rd8 $1 $11) 9... dxc3 $8 10. gxf7+ $8 Rxf7 $8 (10... Kh8 $2 11. Rxh7+ $1 {forcing mate}) 11. Bc4 $1 (11. e6 $6 cxb2 $1 12. exf7+ $8 Kf8 $8 13. Bxb2 Bxb2 $17 {Zhuravliov,V-Vitolinsh,A/USSR 3/155 1967}) (11. Ng5 $2 cxb2 $1) 11... e6 $1 (11... Nf8 12. Ng5 {(Bxf7+ ...Kxf7 Ng5+ ...Kg8 Qh5 ... h6 Qf7+ ...Kh8 b4! with compensation)} e6 $2 {(...d5!=)} 13. Nxf7 $8 Kxf7 14. f5 $8 cxb2 15. fxe6+ $2 {(Qh5+! then Bxb2)} Bxe6 $8 16. Rf1+ $2 {(0-0+)} Kg8 17. Rxf8+ Kxf8 $8 18. Qf3+ Qf6 $3 {[#]} 19. exf6 bxa1=Q 20. fxg7+ Kxg7 $8 21. Qxb7+ Nd7 $19 {Demichev-Seredenko, Kazanijan 1966}) (11... cxb2 $2 12. Bxf7+ { (Norkin,V-Malisov,B/Moscow 1964)} Kxf7 13. Ng5+ {wins}) 12. Ng5 $1 (12. Bxe6 $2 Nxe5 $8 $19) 12... Nxe5 $1 (12... cxb2 13. Bxb2 Qa5+ $8 14. Ke2 $8 Nf8 {(... Nb6 or ...Nc6)} 15. Nxf7 Kxf7 16. f5 $2 {(Qxd6!)} Bxe5 $8 17. Rh5 Ke8 $3 $19 { Sutovsky,E (2700)-Ivanchuk,V (2768)/Khanty-Mansiysk 2011}) 13. fxe5 $2 (13. Qh5 $8 h6 $8 14. fxe5 $8 hxg5 $8 15. Qh7+ $8 Kf8 16. Qh8+ $8 Bxh8 17. Rxh8+ Kg7 $8 18. Rxd8 Nc6 $1 19. Rxd6 Nxe5 20. Be2 Bd7 {(or ...Rc7! Mai,A (2025)-Gretarsson, H (2437)/Kopavogur 2021 or ...Rd7! (Abdrlauf,E (2381)-Chatalbashev,B (2514)/Kragero 2020) Rxe6 ...Rd5! or ...Rd1+!)} 21. Be3 cxb2 22. Rb1 Ng6 $11 { Perecz,L-Villeneuve,A/Bagneux 1978}) 13... cxb2 $8 14. Qh5 $2 (14. Nxf7 $8 bxa1=Q $8 15. Nxd8 Qxe5+ 16. Kf1 Nc6 17. Nxc6 bxc6 $17) 14... Qxg5 $1 {[#]0-1 Delamarre,J-Villeneuve,A/Paris 1977}) 8. h5 $1 $16 Bg4 9. hxg6 fxg6 (9... hxg6 10. Be2 $1 (10. Qd2 $1 {for Qf2-h4}) 10... dxe5 11. fxe5 c5 (11... f6 $2 12. Nh4 $1) 12. Ng5 $3 Bxe2 (12... Bc8 13. dxc5) 13. Nxe2 $8 cxd4 (13... Qd7 14. e6 $3) 14. Qd3 $3 $18) 10. Be2 (10. Bd3 $6 dxe5 11. dxe5 Nc6) (10. Be3 d5 $2 ( 10... Nc6 11. Be2 {(or Qd2)} Bxf3 12. Bxf3 e6 13. Bg4 Qe8 14. Qe2 $16 { Drenchev,P (2465)-Roa Alonso,S (2382)/Madrid 2015}) 11. Rxh7 $3 {[#]} (11. b3 a5 12. a4 Nc6 13. Be2 Qd7 14. Ng5 Bxe2 15. Qxe2 $18 {Lhagvasuren,C (2385)-Kot,J (2300) /Gdynia 1988}) 11... Bxf3 (11... Kxh7 12. Ng5+) 12. Qxf3 $1 (12. Rxg7+ $1) 12... Kxh7 13. Qh3+ $8 Kg8 14. Bd3 Qe8 (14... Rf5 15. g4) (14... Qc8 15. g4 $8 Qe6 16. f5 $1) 15. O-O-O N8d7 16. Rh1 Nf6 17. f5 $1 gxf5 18. Bxf5 $18) (10. Rh4 Bxf3 11. Qxf3 dxe5 12. dxe5 Bxe5 13. Bd2 $44) 10... dxe5 11. Ng5 $1 {[#]} (11. fxe5 $1 Nc6 (11... c5 12. dxc5 Qxd1+ 13. Nxd1 N6d7 14. Nf2 Be6 15. Rxh7 $1) 12. Be3 $8 Nd5 (12... Nb4 13. a3 N4d5 14. Qd2) 13. Bc4 $1 (13. Nxd5 $1 Qxd5 14. Qd2) 13... e6 14. Nxd5 $8 exd5 15. Be2 Ne7 $6 (15... Qd7 16. Qd2) 16. Ng5 $1 (16. Qd2 Nf5 $1 {Roganovic,M (2484)-Leskur,D (2378)/Belgrade 2016}) 16... Bxe2 17. Qxe2 Nf5 18. Ne6 (18. O-O-O Ng3 19. Qg4 $1) 18... Ng3 19. Nxd8 Nxe2 20. Ne6 $1 Ng3 21. Nxf8 $8 Nxh1 (21... Rxf8 22. Rg1 $8) 22. Ne6 {(new return)} c6 23. Bf4 Re8 24. Nxg7 Kxg7 25. Ke2 $1 Rf8 26. Rf1 $1 (26. Ke3 $2 Nf2 $8) (26. g3 $1 g5 27. Rxh1 $8 gxf4 28. g4 $3) 26... g5 27. Bh2 $8 $18) 11... Bf5 $6 (11... Bxe2 12. Qxe2 Qxd4 (12... Nc6 $2 13. dxe5 $8 Nd4 14. Qe4 $18) 13. Ne6 Qc4 14. Qxc4 Nxc4 15. b3 $1 Nb6 16. Nxf8 $1 (16. Nxc7 $2 exf4 $1) 16... Kxf8 17. fxe5 $16) 12. fxe5 {The viking misses a first execution here.} (12. g4 $1 exd4 ( 12... Bc8 13. fxe5 $1) 13. Na4 $3 {[#]} Be6 (13... Qd5 14. Bf3 Qa5+ 15. Bd2 Qxa4 16. gxf5 Rxf5 17. Qe2) (13... d3 14. gxf5 $1 dxe2 15. Qxd8) 14. Rxh7 $1 (14. Nxe6 $2 Qd5 $8 $15 {was quoted by MB}) (14. Nc5 $1) 14... Rf6 (14... Nxa4 15. Rxg7+ $1) 15. Nc5 $8 Bf7 16. Qd3 $1 (16. Nce4) 16... N8d7 (16... Nc6 17. Qh3 $1 ) 17. Nce4 Rc6 $6 (17... Bd5 18. Nxf6+ {(Qxd4)} Nxf6 19. Rh2 {or Qxg6}) 18. Qh3 $1 (18. Nxf7 $1 Kxf7 19. Qb3+) 18... Nf8 19. Rxg7+ $1 Kxg7 20. Bd2 Rxc2 21. Kf2 $18) 12... h5 $2 (12... Nc6 $1 13. Be3 Nb4 $8 14. Rc1 (14. Nce4 $2 h6 $1 15. g4 Bxe4 $8 16. Nxe4 Qd5 $8) 14... h5 (14... h6 15. g4 $1) 15. Nce4 $1) 13. g4 $1 { White is spoiled for choice.} (13. Nce4 $1 Nc6 14. c3 $8 Nd5 15. g4 $1 $18) (13. Be3 $1 Nc6 14. g4 $3 {[#]} (14. Qd2 Nb4 {MB} 15. O-O-O $16) 14... hxg4 15. Qd2 $3 (15. Bxg4 $2 Nc4 $1) 15... Nb4 16. O-O-O $1 Nxc2 17. Bxg4 Nxe3 18. Qh2 $8 Rf7 19. Bxf5 $18) 13... hxg4 14. Bxg4 $2 {too impatient.} (14. Be3 $1 Nc6 15. Qd2 $1 $16 {said Flohr, even without a doubt +-}) 14... Nc6 $8 (14... Qd7 $2 15. Bxf5 Rxf5 (15... Qxf5 16. Qe2 $1) 16. Nce4 $1 $16) 15. Ne6 (15. Be3 $2 Nc4 $8 16. Bf2 N6xe5 $1 17. Be2 (17. dxe5 $2 Bxg4 $19) 17... Nxb2 $17) (15. Bxf5 Rxf5 16. Ne6 $8 Qd7 $8 17. Nxg7 $8 Kxg7 18. Qd2 Rg8 $1 19. Qh6+ Kf7 20. Be3 Nd5 $1 21. O-O-O $11) 15... Qd7 $8 16. Bxf5 $8 (16. Nxf8 $2 Rxf8 $8 17. Bxf5 Qxf5 $17 {MB}) 16... Rxf5 17. Nxg7 $8 Kxg7 {The game is now balanced.} 18. Be3 (18. Qd2 Rg8 $1 $11 {as already seen in the 15th}) (18. Bh6+ $6 Kg8 $2 {(follow MB analysis)} (18... Kf7 $1 19. Rh4 Rh8 $1 20. Qd2 Nc4 $1 21. Qe2 N4xe5 $1 22. O-O-O Nf3 $15) 19. Be3 $6 (19. Rh4 $1 {(missed by MB, as in the 21st of the text)} Nc4 20. Qd3 $1 Nxb2 21. Qg3 $1 Qe6 22. Ne2 Qf7 23. Bf4 $14) 19... Nc4 20. Qe2 $8 Nxe3 $8 21. Qxe3 $8 Qxd4 $8 {(given -/+ by MB but...)} 22. Rh8+ $3 {[#]} Kxh8 (22... Kf7 23. Qxd4 Nxd4 24. Rxa8 Nxc2+ $8 25. Kd2 Nxa1 26. Rxa7 $11) 23. Qh6+ $8 Kg8 24. Qxg6+ $8 Kf8 (24... Kh8 $11) 25. Qxf5+ $8 Ke8 26. Qg6+ Kf8 $8 $11) 18... Nc4 $11 (18... Rh8 19. Rxh8 Kxh8 $11) 19. Qe2 Nxb2 (19... Nxe3 20. Qxe3 Qxd4 $8 21. Qh6+ $8 Kf7 $8 22. Qh7+ $8 Ke6 $2 (22... Kf8 $8 $11) 23. Qxg6+ $8 Kxe5 {(given as -+ by MB !)} 24. Rh2 $3 {[#](parry the threat of mate in 6, but do more !)} (24. Qg3+ $2 Qf4 $8 $11) 24... Rf6 (24... Rh8 25. Re2+ $8 {(Rxh8? ...Qf2+ =)} Kf4 26. Rf2+ $1) (24... Qf4 25. Re2+ $8 Kd4 26. Re4+ $1) 25. Re2+ $1 (25. Qg5+ $1 Ke6 26. Nb5 $3 Qxb2 27. Rd1 $8) (25. Qg7 $2 Ke6 $8 26. Re2+ $2 Ne5 $8 $19) 25... Kd6 26. Ne4+ $1 (26. Nb5+ $2 Kd7 $8 27. Qg5 $11) 26... Kd5 27. Nxf6+ Qxf6 28. O-O-O+) 20. d5 $6 {This has a downside, but not the one determined by the ex-world champion !} (20. Qb5 $1 Nxe5 $8 21. Qxb2 $1 Nc4 $1 (21... Nf3+ $1 22. Kd1 Qe6 $1) 22. Qxb7 $8 Nxe3 $1 (22... Qe6 $1 23. Ne4 $1 Rh8 $1 24. Rxh8 $8 Nxe3 $8 25. Ke2 $1 {(Rh1? ...Rd5! but Qc8!=)} Nd5 $1 {(or ...Nf1!= but not ...Ng4? Rah1!!+-)} 26. Rh4 $8 Rh5 $8 27. Rah1 $8 g5 $1 $11) (22... Rh8 $2 23. Ke2 $8 $18) 23. Qxa8 $1 Nxc2+ $8 24. Kd2 (24. Ke2 $2 Nxd4+ $8) 24... Qxd4+ $8 (24... Nxa1 $2 25. Qh8+ $8 Kf7 26. Rh7+ $1 Ke6 27. Qg8+ $1 Kd6 28. Ne4+ $1 {(or Qg6+! ...Qe6 Qxe6+! & Rh1)} Kc6 29. Qc4+ $8 Kb6 30. Rh8 $3 {(Nc5? ...Qb5!!)} Kb7 31. Nc5+ $1) 25. Kxc2 Rf2+ $1 26. Kb3 $8 Qb6+ $8 27. Kc4 Qa6+ $1 (27... Rf4+ $1 28. Ne4 Qa6+ $8) 28. Kb3 $1 (28. Kd4 $2 Rd2+ $8 {(other Rook move "forgotten" by MB, who is satisfied with ...Qb6+? Kd3=)} 29. Ke3 Qd3+ $8 30. Kf4 Rf2+ $1 31. Kg4 Qf5+ $8 32. Kg3 Qf4+ $8 33. Kh3 Qe3+ $1 { and mate in 2}) 28... Qb6+ $8 29. Kc4 $1 $11) (20. Rh4 $1 Rh8 $1 (20... Raf8 21. Rb1 $1) 21. Rxh8 $8 Nxd4 $1 (21... Kxh8 $1 22. d5 $8 Nxe5 23. Bd4 $8 Qd6 $8 24. Ne4 $8 Qb4+ {(...Qxd5 Bxb2 ...Kg8!!=)} 25. c3 $8 Qxd4 $1 26. cxd4 Nf3+ 27. Kf1 $8 Nxd4+ 28. Qf2 $8 $11) 22. e6 $3 {[#]} (22. Bxd4 $2 Qxd4 $8 $19 {attacking the 4 white figures !}) 22... Qd6 $8 (22... Nxe6 $2 23. Qh2 $1) 23. Ne4 $8 Qd5 24. Bxd4+ $8 Qxd4 25. Rh1 $8 {(White's additional Rook only brings him nothing !)} Re5 $1 {(the simplest)} (25... Rf4 $1 26. Nf2 $1 Qc3+ $1 {(...Rf5!)} 27. Kf1 Nc4 $8 28. Re1 Qg3 $1 29. Rb1 Ne3+ $8 {(...Qc3? Rb3!)} 30. Ke1 Ng2+ $1 31. Kf1 $11) (25... Na4 $1 26. Rd1 $8 {(Rb1? ...Re5!)} Qb4+ $8 27. Rd2 $8 Nc3 { (or ...Re5 Rh7+!)} 28. Nxc3 Qxc3 29. Qg2 $8 Re5+ $1 30. Kf1 $8 Qe3 $1 31. Qe2 $8 Rf5+ 32. Ke1 $8 Qc3 33. Qg2 $8 $11) (25... Nd3+ $6 26. cxd3 Qxa1+ 27. Qd1 $8 $14) 26. Rh4 $1 (26. c3 $6 Qxe4 $8 $15) 26... Qg1+ $1 27. Qf1 $8 Qe3+ $8 28. Qe2 $11) 20... Rxe5 $2 {This "exchange sacrifice" has been generally praised, but wrongly !} (20... Nxe5 $1 21. Bd4 $8 Qd6 $8 22. Ne4 $8 Qb4+ $8 23. c3 $8 { (we have already seen this in 20 Rh4, but with one less Rook on each side. )} Qxd4 $1 24. cxd4 Nf3+ $8 25. Qxf3 $8 Rxf3 26. Ke2 Ra3 $1 27. Nc5 $1 Rh8 28. Ne6+ $8 Kg8 $8 29. Rxh8+ $8 Kxh8 30. Rc1 $1 Na4 31. Rxc7 Nc3+ 32. Kf2 Nxd5 33. Rxb7 Rxa2+ 34. Kf3 Ra3+ 35. Ke4 Nf6+ 36. Kf4 $8 Ra5 $15) (20... Na4 $1 21. Rg1 $1 (21. Nxa4 $6 Qxd5 $8 22. Rh4 {(Qh2? ...Rh5!!)} Raf8 $1 $17) (21. e6 $1 Qd6 $8 22. Bh6+ $1 Kg8 $8 23. Qg2 $8 Ne5 24. Nxa4 $8 Nf3+ $1 25. Kd1 $1 Qxd5+ 26. Kc1 $8 g5 $1 27. Rf1 Qe4 28. Rxf3 $11) 21... Nxc3 22. Rxg6+ $3 {[#]} Kxg6 23. Qg4+ Kh7 $8 24. Qh4+ Kg8 $11) 21. Bd4 $2 {Instead of this tempting move White had a surprising idea, the 3rd move on the "h" file (after Rh8+ & Rh2) forgotten by the prestigious commentator.} (21. Rh4 $3 {(for that after dxc6 ...Qxc6, the Rook is not in the grip, but also to control the squares e4 and c4 !)} Rd8 (21... Rxd5 22. Nxd5 $8 Qxd5 23. Rb1 $1 Qxa2 24. Bd4+ $1 Nxd4 25. Qe5+ $8 Kf8 26. Rh8+ $8 Kf7 27. Rh7+ $8) (21... Kg8 22. Kd2 $3 {(artificial castle long! rather than dxc6? ...Qxc6 Nd1!!= or Rb1! ...e6! d6!!) } Na5 23. Rah1 $1 Nac4+ 24. Rxc4 $8 {(Kc1? ...Rxe3!!=)} Nxc4+ 25. Qxc4 $18) ( 21... Rh8 22. dxc6 $8 {(Rxh8? ...Kxh8 Bd4= but not dxc6? ...Qxc6 Bd4 ... Qh1+!! then ...Qh6+!! or ...Qh4+!!)} Qxc6 23. Bh6+ $8 {but not Bd4? ...Rxh4!!} ) 22. dxc6 $8 Qe6 23. Ne4 $3 {[#]} (23. Bd4 $4 Rxd4 $8) (23. Re4 $6 Rxe4 24. Nxe4 Qxc6 $8 25. Rb1 Nc4 26. Bc5 $16) 23... Qxc6 (23... Rxe4 24. Rxe4 $1 Qxe4 25. Bh6+ $8) 24. Kf2 $1 Nc4 25. Bf4 $3 {[#]} Rf5 26. Rah1 $1 Rh8 $1 27. Ng3 $3 Qc5+ 28. Kg2 $8 Qd5+ 29. Kg1 $8 Qc5+ (29... Qd4+ 30. Be3 $3) 30. Qf2 $8 Qxf2+ 31. Kxf2 Rxh4 (31... Rff8 32. Ke2 $1 Rxh4 33. Rxh4 $18) 32. Nxf5+ $8 (32. Rxh4 $2 Rf6 $16) 32... gxf5 33. Rxh4 $18) (21. dxc6 $2 Qxc6 $8 22. Bh6+ $8 (22. Bd4 $2 Qxh1+ $8 23. Kd2 Qh6+ $3 {[#]} 24. Ke1 Qh4+ $1) 22... Kg8 23. Qxe5 $8 Qxh1+ $8 24. Ke2 Qxh6 25. Qe6+ Kh8 26. Qe5+ $8 Kg8 $11) (21. Rb1 $2 Nc4 $8 22. Qxc4 Rxe3+ $8 23. Kd2 Ne5 $1 24. Qf4 $1 Rf8 $8 25. Qh6+ $8 Kf7 $8 26. Qh7+ $1 Ke8 $8 27. Kxe3 $8 Qg4 $1 28. Rbf1 $8 (28. Rhf1 $2 Qg5+ $8) 28... Rxf1 $1 (28... Qg5+ $1 29. Ke2 $1 Qg2+ 30. Ke3 Ng4+ 31. Kd3 $11 Rxf1 $2 32. Qxg6+ $8) 29. Rxf1 Nc4+ $8 30. Kd3 $11) (21. Kd2 $2 Rxe3 (21... Na5 22. Bd4 Nbc4+ $8 23. Kc1 Qf5 $1) (21... Rxd5+ 22. Kc1 $8) 22. Kxe3 $8 Ne5 $11) (21. O-O $4 Rxe3 $3 22. Qxe3 Qg4+ $8) 21... Nc4 $3 $11 (21... Qd6 22. Bxe5+ $8 Nxe5 23. Qe3 $14) 22. Bxe5+ (22. O-O-O Nxd4 $8 23. Qxc4 $8 Nf3 24. Qf4 $44 Rf8 25. Rh7+ $8 Kxh7 $8 26. Qxf8 $8 Qh3 $11 ) 22... N6xe5 $8 23. Rh4 $1 {Comes two moves too late !} (23. O-O-O $1 { (for Qh2)} Qd6 $8 24. Nb1 $8 Qb6 (24... Rf8 25. Qh2 Nf3 $8) 25. c3 $8 Rf8 $1 { (isn't it winning ?)} 26. Na3 $3 {[#](the only move, attacking the black forces)} (26. Rh2 $2 Rf3 $1) (26. Qh2 $2 Qe3+ $8 27. Rd2 Nf3 $1) (26. Rdf1 $2 Rf6 $3 27. Rxf6 exf6 $8 28. Qh2 Qe3+ $8 29. Kc2 Nf7 $1 $19 {because Nd2 is impossible}) (26. Rd4 $2 Rf2 $3 27. Qxf2 Nd3+ $8) 26... Rf2 $1 (26... Nxa3 27. Qxe5+ $8 Qf6 $8 $14) (26... Qe3+ $1 27. Qxe3 Nxe3 28. Rd2 $11) 27. Nxc4 $8 Rxe2 $8 28. Nxb6 $8 axb6 $11) 23... Rh8 $1 (23... Qd6 24. Rxc4 $8 Nxc4 25. Qxc4 Qg3+ $1 26. Kd2 Qg5+ $8 27. Kd3 Qg3+ $8 28. Kd2 $11) 24. Rxh8 $8 (24. Rxc4 $2 Rh1+ $1 25. Kd2 Nxc4+ 26. Qxc4 Rxa1 $19 {Flohr}) 24... Kxh8 25. Qh2+ $1 (25. Qf2 $1 Qg4 26. Qf8+ $8 Kh7 27. Qxe7+ $8 Kh6 28. Ne2 $1 (28. Qf8+ $1) 28... Qf3 29. Qh4+ $8 Kg7 30. Rb1 $11) 25... Kg7 26. Qf4 $2 {A half-point was lost on the 21st move, another one is added.} (26. Qg3 $8 Qf5 $1 27. O-O-O $8 Qf6 (27... g5 28. a4 $1) 28. Rh1 (28. Rd4 $11) 28... b5 $1 29. Qh3 $1 (29. Nxb5 $2 Nd3+ $3 ) 29... Nf7 {(for ...b4!)} 30. Qd3 $8 (30. Rf1 $2 Qg5+ $8 {dixit MB}) 30... a5 (30... Nfe5 31. Qh3 $1 $11) 31. Kb1 (31. a4) 31... Na3+ 32. Kc1 $8 Nc4 (32... b4 33. Nb1 $1) 33. Kb1 $11) (26. O-O-O $2 Qd6 $3 {(threatens King & Queen)} 27. Rh1 Qa3+ $8 28. Kd1 Ne3+ $1 (28... Nb2+ $1) 29. Ke2 Qa6+ $3 {[#]bicolour echo: see the line 21 dxc6 & 22 Bd4}) (26. Ke2 $2 Qg4+ $1 (26... Qf5 $1) 27. Kf1 Ne3+ $1) (26. Qf2 $2 Qh3 $1 (26... Qg4 $1) 27. Ne2 Qh1+ $1) 26... Qh3 $3 {[#]} 27. Nd1 Qg2 $8 $19 (27... Qh1+ $2 28. Ke2 Qxd5 29. Nf2 $1 $17) 28. Qd4 (28. Qf2 Nf3+ $1 (28... Qxd5 $1) 29. Ke2 Nd4+ $1 30. Kd3 (30. Ke1 Qe4+ $1 31. Kf1 Qh1+ $1 32. Qg1 Nd2+) 30... Nb2+ $3 31. Kxd4 (31. Kd2 Qxd5 $8 32. Nxb2 Nb3+ $8) 31... Qg4+ $3 {[#] (offers a star-shaped escape)} 32. Kc3 {(idem on Ke3, the other moves giving an immediate mate)} Nxd1+ $8 33. Rxd1 Qxd1 $19) 28... Kg8 $1 {With the clear threat ...Nf3#.} 29. Qf2 Qh1+ $1 (29... Qxd5 $1) 30. Ke2 Qe4+ {Rehearsal always useful in a zeitnot.} (30... Qxd5 $1) 31. Kf1 Qh1+ 32. Ke2 Qxd5 $1 33. Nc3 $6 (33. Qf4 $1 Nc6 $3 {(threatens ...g5! overrunning the White Queen or ... Nd4+!)} (33... Qh1 $1) 34. c3 $1 Qh5+ $1 (34... g5 35. Qg3 $1 Qd2+ 36. Kf1 b6) 35. Kf2 N6e5 $1 36. Kg3 (36. Qg3 Qh1 $1) 36... Qe2 $1 37. Nf2 Nd6 $1 38. Kg2 Nf5 $1 39. Qe4 Ne3+ $1 40. Kg3 Kf7 $1 41. Rh1 Ke6 $1 42. Rh7 {(for Rxe7+!)} b6 $3 {[#](gives the black King the b7 square)} 43. Rxe7+ (43. Qf4 Nf5+ $1 44. Kg2 Qxa2) 43... Kxe7 44. Qxe5+ Kd7 $8 (44... Kd8 $2 45. Qf6+ $8 Kc8 {(...Kd7 Qf7+!!)} 46. Qe6+ $8 Kb7 47. Qe4+ $8) 45. Qg7+ Kc8 $1 $19) (33. Qg3 Qd4 $1 34. Rb1 (34. Rc1 Qd2+) 34... Qe4+ $1 35. Kf1 Nd2+) 33... Qd2+ $8 0-1 [Event "2#"] [Site "?"] [Date "1967.??.??"] [Round "?"] [White "Boyer, JP."] [Black "4828.32"] [Result "1-0"] [SetUp "1"] [FEN "2Q5/B3NN2/1q3r2/4p2r/2p1knBR/1P2P1R1/2P5/5Kn1 w - - 0 1"] [PlyCount "0"] [EventDate "1967.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1903.??.??"] [Round "?"] [White "Shinkman, W."] [Black "0255.11"] [Result "1-0"] [SetUp "1"] [FEN "5K2/1n1N4/6bR/3kB3/1p5N/R3P3/8/3B4 w - - 0 1"] [PlyCount "0"] [EventDate "1903.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "Shanshin, V."] [Black "4285.44"] [Result "1-0"] [SetUp "1"] [FEN "4n1B1/1N1bR3/3pq1pK/B5P1/2pkP2R/p3N1Q1/1bP2P2/8 w - - 0 1"] [PlyCount "0"] [EventDate "2015.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "2017.??.??"] [Round "?"] [White "Kovacevic, M."] [Black "1572.36"] [Result "1-0"] [SetUp "1"] [FEN "5Q2/6p1/3Rp1pb/2pN4/4k3/1pP2RBP/1p3P2/rb3N1K w - - 0 1"] [PlyCount "0"] [EventDate "2017.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1925.??.??"] [Round "?"] [White "Simkhovitch, F."] [Black "4584.24"] [Result "1-0"] [SetUp "1"] [FEN "1Bq2Rbb/1p3p1B/2p5/4n2r/3P1k1p/1Q3N1P/K7/6R1 w - - 0 1"] [PlyCount "0"] [EventDate "1925.??.??"] [SourceDate "2010.01.01"] {Given at the 2018 French Championship.} -- 1-0 [Event "2#"] [Site "?"] [Date "1969.??.??"] [Round "?"] [White "Diot, R."] [Black "1258.31"] [Result "1-0"] [SetUp "1"] [FEN "3R1NB1/4p1PK/6PB/3Pkb2/Q3NR2/6n1/n7/8 w - - 0 1"] [PlyCount "0"] [EventDate "1969.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1999.??.??"] [Round "?"] [White "Mansfield, C."] [Black "4551.23"] [Result "1-0"] [SetUp "1"] [FEN "1bK5/8/1Pp5/3k2p1/2N1R3/2P2B1p/3rR1qB/6Q1 w - - 0 1"] [PlyCount "0"] [EventDate "1999.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "2005.??.??"] [Round "?"] [White "Markovtsy, V."] [Black "1828.36"] [Result "1-0"] [SetUp "1"] [FEN "1B4Q1/2r3N1/2p5/2p3pR/2rn2kP/2pK1R1p/4NpPP/3B1n2 w - - 0 1"] [PlyCount "0"] [EventDate "2005.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "1870.??.??"] [Round "?"] [White "Shinkman, W."] [Black "1071.24"] [Result "1-0"] [SetUp "1"] [FEN "8/7K/2Bp1pQ1/4P3/1N3k2/2bp4/4bPp1/8 w - - 0 1"] [PlyCount "0"] [EventDate "1870.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2# "] [Site "?"] [Date "1966.??.??"] [Round "?"] [White "Mansfield, C."] [Black "4146.33"] [Result "1-0"] [SetUp "1"] [FEN "3b2n1/2p1qP1K/2R1Pk1p/7Q/1B1p2Pn/8/8/8 w - - 0 1"] [PlyCount "0"] [EventDate "1966.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2#"] [Site "?"] [Date "2009.??.??"] [Round "?"] [White "Stojnic, D."] [Black "4588.74"] [Result "1-0"] [SetUp "1"] [FEN "8/1BB1PRn1/pP4nq/KNbNpPp1/1P1pkP2/R3PbQ1/2P5/3r4 w - - 0 1"] [PlyCount "0"] [EventDate "2009.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "2# b) Nh6 on f6"] [Site "?"] [Date "1983.??.??"] [Round "?"] [White "Knuppert, H."] [Black "4528.43"] [Result "1-0"] [SetUp "1"] [FEN "1nN5/5P1B/3RP2N/r3k2q/p3PppB/2P5/4Q3/3KnR2 w - - 0 1"] [PlyCount "0"] [EventDate "1983.??.??"] [SourceDate "2010.01.01"] {Given at the Serbian Championship 2018.} -- 1-0 [Event "3#"] [Site "?"] [Date "1911.??.??"] [Round "?"] [White "Wurzburg, O."] [Black "1111.04"] [Result "1-0"] [SetUp "1"] [FEN "1Q6/8/8/8/8/p1p5/pNB3Rp/k6K w - - 0 1"] [PlyCount "0"] [EventDate "1911.??.??"] [SourceDate "2010.01.01"] {Problem presented in 1972, whose author remained stubbornly unknown... for 40 years.} -- 1-0 [Event "4#"] [Site "?"] [Date "1989.??.??"] [Round "?"] [White "Fomichev, E & Fediakov S"] [Black "0758.06"] [Result "1-0"] [SetUp "1"] [FEN "2K4n/3p2p1/R5p1/3k4/1pN1N3/4B2n/2B2pp1/4brr1 w - - 0 1"] [PlyCount "7"] [EventDate "1989.??.??"] [SourceDate "2010.01.01"] 1. Nc5 $1 {(2 Bb3)} (1. Bb3 $2 Kxe4 $1) (1. Bd3 $2 Nf7 $1) 1... Ng5 (1... Kxc4 2. Bb3+ $1 Kb5 {(here, you have to take your time instead of turning away heels)} (2... Kc3 3. Ra2 Nf7 4. Rc2#) 3. Nb7 $3 Kxa6 (3... Bc3 4. Rb6#) 4. Bc4# $1) (1... Bd2 2. Rd6+ $1 Kxc4 3. Bd3+ Kc3 4. Bd4# $1) (1... d6 2. Nb6+ $1 Ke5 (2... Kc6 $2 3. Ba4#) 3. Nbd7+ Kd5 4. Bb3#) (1... Nf7 2. Nb6+ (2. Bb3)) 2. Bb3 $1 {(3 Rd6#)} Nhf7 (2... Ne4 3. Nd6+) 3. Nd6+ Ke5 4. Nxd7# $1 {Three model mates without echo, with 3, 4 & 5 white figures respectively, which is exceptional. Given at the Warsaw Grand Prix 2015 and the Finnish Championship 2019. It can be solved if the "encouraging" variant "1...Bd2 is seen before the discouraging 1...Kxc4 !} 1-0 [Event "h#2 b) remove mating piece from a)"] [Site "?"] [Date "1995.??.??"] [Round "?"] [White "Balasubramanian, SK."] [Black "0454.43"] [Result "1-0"] [SetUp "1"] [FEN "4Brn1/1p4R1/1K2b1p1/2Pk4/2N4B/5p2/2PP2P1/8 b - - 0 1"] [PlyCount "0"] [EventDate "1995.??.??"] [SourceDate "2010.01.01"] {Quadruplets. b) : remove mating piece from a) ; c) : remove mating piece from b) ; d) : remove mating piece from c).} -- 1-0 [Event "h#2 with set play"] [Site "?"] [Date "1991.??.??"] [Round "?"] [White "Borodatov, L."] [Black "0431.13"] [Result "1-0"] [SetUp "1"] [FEN "8/8/8/8/8/4p1pp/3P3b/R3KNrk b Q - 0 1"] [PlyCount "0"] [EventDate "1991.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "h#2 b) bK on e4"] [Site "?"] [Date "2001.??.??"] [Round "?"] [White "Borst, D."] [Black "1374.13"] [Result "1-0"] [SetUp "1"] [FEN "5Qb1/5p2/8/6p1/1NPk1Bn1/8/1p6/1rbK4 b - - 0 1"] [PlyCount "0"] [EventDate "2001.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "h#3 2 sol"] [Site "?"] [Date "1982.??.??"] [Round "?"] [White "Denkovski, Gl"] [Black "3332.04"] [Result "1-0"] [SetUp "1"] [FEN "1K6/1p1q4/1br5/1Nkp4/2p5/1p2N3/8/8 b - - 0 1"] [PlyCount "0"] [EventDate "1982.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "h#8"] [Site "?"] [Date "1981.??.??"] [Round "?"] [White "Maslar, Z."] [Black "3031.00"] [Result "1-0"] [SetUp "1"] [FEN "8/8/N7/8/8/6q1/3K2k1/3b4 b - - 0 1"] [PlyCount "0"] [EventDate "1981.??.??"] [SourceDate "2010.01.01"] 1-0 [Event "s#3"] [Site "?"] [Date "1978.??.??"] [Round "?"] [White "Labai, Z."] [Black "1228.35"] [Result "0-1"] [SetUp "1"] [FEN "8/6B1/7P/2pR1Qnk/2p1N2p/2RpKN1p/3P3P/3B3n w - - 0 1"] [PlyCount "0"] [EventDate "1978.??.??"] [SourceDate "2010.01.01"] 0-1 [Event "s#4"] [Site "?"] [Date "2015.??.??"] [Round "?"] [White "Khachaturov, S."] [Black "1885.52"] [Result "0-1"] [SetUp "1"] [FEN "2r5/2bBR1N1/QP2Kpr1/2P2P1N/4k1n1/2B1p1P1/4P3/3R3b w - - 0 1"] [PlyCount "0"] [EventDate "2015.??.??"] [SourceDate "2010.01.01"] 0-1 [Event "s#6"] [Site "?"] [Date "2018.??.??"] [Round "?"] [White "Gamnitzer, C."] [Black "1175.77"] [Result "0-1"] [SetUp "1"] [FEN "2NR1N2/3p1ppp/2pPbp2/2Qn1k2/5P2/P2P2PP/Kp5P/bB6 w - - 0 1"] [PlyCount "12"] [EventDate "2018.??.??"] [SourceDate "2010.01.01"] 1. Na7 $1 g5 (1... h5 2. Rc8 $1 h4 (2... g5 $2 3. Qxd5+ cxd5 4. Rc5 gxf4 5. Rxd5+ Bxd5#) 3. Qxd5+ cxd5 (3... Bxd5#) 4. Rc5 hxg3 5. hxg3 g5 6. Rxd5+ Bxd5#) 2. Nxc6 $1 dxc6 (2... gxf4 $2 3. Qxd5+ Bxd5#) 3. g4+ Kxf4 4. Qf2+ Ke5 5. Ng6+ fxg6 6. Qe3+ Nxe3# 0-1

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