Study.1 IURI AKOBIA (GEORGIA) WCCI st prize, World Cup 2010
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- Tobias McGee
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1 Study.1 1 st prize, World Cup 2010 Win 1.Rf8+ 1.Nd6? Rf2+ 2.Nxe4 Rxf1+ 3.Kb2 g2=; 1.Rf4? Rxc8+ 2.Rxe4 Rxb8+= 1...Kd7 2.Nb6+! The first interesting moment of the study. It is tempting to play - 2.Nd6? Bg6! 3.Ka1! Rc1+ (3...g2 4.Ba7 Rc1+=) 4.Ka2! (4.Kb2? Rb1+ 5.Ka2 Ke7 6.Re8+ Bxe8 7.Kxb1 g2=) 4...g2 5.Ba7 g1q 6.Bxg1 Rxg1 7.Nc4! (7.Nb7? Ke7 8.Rc8 Bf7+=) 7...Ke7 8.Ra8 Bf5! 9.Ra7+ (9.Bd5 Be6) 9...Kf6 10.Ra6+ Ke7 11.Bd5 Re1! 12.Ra7+ Kf6! 13.Rf7+ Kg6 - with inevitable 14...Be6, exchange of one of white pieces and a draw final. 2...Ke7! Now it is possible to reduce force of battery 3.Rf4 The precipitate check 3.Rf7 +? Only improved a position of the black king: 3.Rf7+? Ke8 4.Rf4 Re2+ 5.Rxe4+ Rxe4 6.Nc4 g2 7.Ba7 Rg4 8.Bd5 g1q+= 3...Re2+ Can not keep the battery Bg6 4.Bd6+ (Nd5) Kxd6 5.Rf6++ ; 3...Bd3 4.Nd5+ Ke8 5.Bf7+ Kd7 6.Rd4 g2 7.Bh2+ 4.Rxe4+ Rxe4 5.Nd5+! It appears the capture of a pawn g3 is impossible, because wn on b6. Here is only a try 5.Bxg3!? Rb4+!= (5...Rg4? 6.Nd5+ Kf8 7.Bd6+ Kxg8 8.Nf6+) 5...Kf8! The study centre. Why at once not to capture a dangerous pawn g3? - see (the line 6.Bxg3 below) 6.Bd6+! The heart of the study. Picking up dangerous pawn is in fact the thematic try: 6.Bxg3!? Kg7!! zz (6...Kxg8? 7.Nf6+; 6...Rg4? 7.Bd6+ Kxg8 8.Nf6+; 6...Re2? 7.Bh7! wins, Black can not to save Pa4) 7.Bh7? Rg4! (7...Kxh7? 8.Nf6+-) 8.Be5+ Kxh7 9.Nf6+ Kg6 10.Nxg4 Kf5!= 6...Kg7!! 6...Kxg8 7.Nf6+- 7.Bxg3 zz a4! By this waiting move Black hope to force to lose white pieces coordination. - than win the locked wbg8 7...Kxg8 8.Nf6+; 7...Rg4 8.Be5+! Kxg8 9.Nf6+-; 7...Re8 8.Bh7! Kxh7 (8...Rd8 9.Be4+ ) 9.Nf6+-; 7...Re2 8.Nf4 Releasing a way to the Bg8; 7...Rd4 8.Be5++ ; 7...Rc4 8.Be6+ Here the black have a magic move of the king 8.Ka1!! All other steps of white breaks coordination of forces. The strongest move it seems Bh7, but it is only the thematic try: 8.Bh7!? Rg4! (8...Kxh7? 9.Nf6+ -) 9.Bf2 (9.Bb8 Rg1+!= compare with the line 9...Rg4) 9...Rg2= (9...Kxh7? 10.Nf6+-; 9...Rg5? 10.Be4+ ) 8...a3! 9.Bh7! The bishop has made the job well! 9...Rd4 10.Be5+ wins. Need to note that the sense of 8.Ka1 was: 9...Rg4 10.Bb8 Rg1+ now is possible because wk has unblocked the square b1. 11.Bb1!+. Compare with the line 9.Bb8 in the thematic try 8.Bh7!? E.Eilazyan L.Gonzalez D.Gurgenidze Total = 11.0 O.Pervakov L.Salai - 1.5
2 Study.2 1 st prize, The Ural s Problemist 2011 Draw 1.e4! 1.a4!? Rxb4 2.a5 Kc3 3.f4 (3.a6 Kd4 +) 3...Kd4 4.e4 Kc5! 5.f5 Kc6 +; 1.a3? Kxa3 2.e4 Kxb4 3.d4 Kc4 + A) -1...Kc3 2.a3 Kxd3 3.Ka6 Rb8 4.Ka7 Rb5 5.Ka6 positional draw or 5...Kc4 5...Rb8 6.Ka7 positional draw 6.f4! Rb8 7.e5! 7.f5!? Re Kd5 8.b5 Kc5! 9.a4! Ra8+ 10.Kb7 Rxa4 11.f5! Kxb5 12.e6! Kc5 13.e7 Re4 14.f6 Kd6 15.Kc8 Rc4+ 16.Kd8 Ra4 17.e8N+!=Echo! B) Rxb4 2.a3! Kxa3 3.e5 and branches: B1) Kb3 4.e6 Rf4 5.Kb6 Rf6 6.Kc5 Rxe6 7.d4 Ra6 8.d5 Ra5+ 9.Kc6 Kc4 10.d6 Ra6+ 11.Kc7 Kc5 12.d7 Ra7+ 13.Kc8 Kc6 14.d8N+!= Echo! B2) Ka4 4.d4! Ka5 (or also 4...Rxd4 5.Kb6 Re4 6.f4=; 4...Kb5 5.Kb7 Rxd4 6.Kc7 Kc5 7.e6 with the main line) 5.f3!! zz 5.f4!? Rxd4 6.Kb7 Rxf4 7.Kc6 Re4 8.Kd6 Kb6 9.e6 Kb7 10.e7 Kc Rxd4 6.Kb7 Kb5 7.Kc7 Rc4+ 8.Kd7 Rd4+ 9.Kc7! positional draw, or 9...Kc5 10.e6 Ra4 11.e7 11.Kd7? Ra7+ 12.Kd8 Kd Ra7+ 12.Kd8 Kd6 13.e8N+!= Echo! E.Eilazyan L.Gonzalez - 3 D.Gurgenidze - 3 Total = 8.5 O.Pervakov L.Salai - 2.0
3 Study nd prizes, Zhigulovskie Zori 2011 BTM, Win 1...Rh2+! 1...h3 2.Ra8! Rh2+ 3.Kf3 Rg2 4.g8Q main line 2.Kf1 2.Kf3?? Rh3+! (2...h3? 3.Ra8 Rg2 4.g8Q Rxg8 5.Rxg8 h2 6.Kg2 Ke3 7.Rg3+ main line) 3.Kf4 (3.Kg2 Rg3+ +) 3...Rg3 +; 2.Kg1?? Rh3! 3.Kg2 Rg h3 2...Ke3 3.Ra8 (Rb8) 3...Rf2+ 4.Kg1 Rf6 5.g8Q Rg6+ 6.Kf1 Rxg8 7.Rxg8 d3 8.Ke1 + 3.Ra8! Thematic try 1-3.Rb8!? Rh1+! (3...Ke3? 4.Rb3+ d3 5.Rxd3+! Kxd3 6.g8Q+ ) 4.Kf2 h2! (4...Rh2+? 5.Kf3 Rg2 6.g8Q main line) 5.g8Q Rf1+! 6.Kxf1 h1q+ 7.Kf2 (7.Qg1 Qf3+ 8.Qf2 Qh1+=) 7...Qh2+ 8.Kf3 Qe2+=; Thematic try 2-3.Rf8 (h8,e8,d8,c8)!? 3...Ke3! (3...Rh1+? 4.Kf2 Rh2+ 5.Kf3 Rg2 6.g8Q main line) 4.g8Q Rh1+ 5.Qg1+ Rxg1+ 6.Kxg1= 3...Rh Ke3 4.Ra3+ d3 5.Rxd3+! Kxd3 6.g8Q Ra2 7.Qg3++ ; 3...Rg2 4.g8Q Rxg8 5.Rxg8+ 4.Kf2 Rh h2 5.g8Q Rf1+ 6.Kxf1 h1q+ 7.Kf2! Qh2+ 8.Qg2+ 5.Kf3 Rg2 6.g8Q Rxg8 7.Rxg8 h2 8.Kg2 Ke3! 8...Kxe4 9.Rg4+ Ke3 10.Rh4 d3 11.Kf1 d2 12.Rh3+ Kd4 13.Ke2+ ; 8...Ke2 9.Rf8 f6 10.Kxh2+ 9.Rg3+ 9.Kxh2? d3 10.Rg3+ Ke2 11.Rg2+ Ke1 12.Rg1+ Ke2= 9...Ke2 9...Kxe4 10.Rh3 h1q+ 11.Rxh1!+ (11.Kxh1? d3=) 10.Rg7!! 10.Rg8? d3 11.Kxh2 d2 12.Rg2+ Kd3 +; 10.Kxh2? d3 11.Rg2+ Ke1 12.Rg1+ Ke2= 10...f d3 11.Rxf7 Ke3 12.Rxh7+ 11.Rf7 d3 12.Rxf6 h1q+ 13.Kxh1 d2 14.Rd6+ E.Eilazyan L.Gonzalez D.Gurgenidze - 1,5 Total = 6.0 O.Pervakov L.Salai - 1.0
4 Study.4 4 th prize, Oleg Pervakov 50 JT 2010 Draw 1.f7 1.Rd8? g3 2.f7 Ne3+ 3.Kd3 Rf2 4.f8Q Rxf8 5.Rxf8+ Ke1 6.Re8 g2 7.Rxe3+ Kf2 8.Nd6 g1q +; 1.Ne7? Ne1! 2.Rd4 g3 3.Nxg6 h3 4.f7 (4.Rf4+ Rf2 5.f7 h2 6.f8Q h1q) 4...Rf2 5.Nf4 h2 6.f8Q h1q 7.Qe8 Rc2+ 8.Kb4 Qf Ne Ne1 2.f8Q+ Rf2 3.Qd8 Nxd3 4.Qxd3+ Kg2 5.Ne7 h3 6.Qe4++ 2.Rxe3 2.Kd4? Nc2+ 3.Ke5 Rf2 4.Rd2 Rxf7 5.Rxc2 g Rf2 3.Nd6 h3 Now, the Black will threaten h2. The White should leave his rook on the left and than attack to bk. But, it is necessary to choose a correct square for the rook. It appears that the correct square is only d3. As it will be visible (see the tries), other squares create to the White problems. The rook will block the necessary squares. So, the White moves: 4.Rd3!! Thematic try 4.Rb3!? h2 5.Rb1+ Kg2 6.Rb2 Rxb2 (br has blocked the line a1 h8) 7.f8Q h1q! (7...Ra2? 8.Nf5!! and play leads to the main thematic line) 8.Qa8+ Kh2 9.Qh8+ Kg1 (impossible Qa1+ because blocked b2) 10.Qxb2-+ (10.Qd4+ Rf2 11.Qxg4+ Qg2 12.Qd4 Qc6+ 13.Kb4 g5 +) 4.Ra3!? h2 5.Ra1+ Kg2 6.Kd5 (6.Ra2 Rxa2 7.f8Q h1q +) 6...h1Q 7.Rxh1 Kxh1 8.Ke6 Rf4!! 9.Ne8 Rxf7!! + (9...g3? 10.Nf6 g2 11.f8Q g1q 12.Qh6+=) ; 4.Rc3!? h2 5.Rc1+ Kg2 6.Kd5 h1q 7.Rxh1 Kxh1 8.Ke6 Rf4!! 9.Ne8 Rxf7 +; try 4.Kd3!? h2 5.Re2 Rf h2 5.Rd1+! Is early 5.Rd2? Rf4+ 6.Rd4 Rxf7 7.Nxf7 h1q Kg2 5...Ke2 6.Rd2+! (6.Rh1? g3 7.Ne4 Rxf7 8.Nxg3+ Kf2 9.Nf1 Rd7! 10.Kc5 Rd8! 11.Kc6 Kg2! +) 6...Kxd2 7.Ne4+ Ke2 8.Nxf2= 6.Rd2!! 6.Kd5? h1q 7.Rxh1 Kxh1 8.Ke6 Rf4! to prevent Ne4 9.Ne8 Rxf Rxd2 7.f8Q and with: A) h1Q (compare with the same move in the thematic try 4.Rb3!? where br on b2 and impossible Qa1 with the check) 8.Qa8+ Kh2 9.Qh8+ Kg1 10.Qa1+ Kg2 11.Qa8+ Kh2 12.Qh8+ positional draw with the perpetual check by wq (a1 a8 h8); B) - 7 Ra2! 8.Nf5!! and branches again: B1) Ra4+ 9.Kb3 (Kb5) 9...h1Q 10.Ne3+ Kg3 11.Nf1+! Kg2 12.Ne3+ with the perpetual check by wn (f1 e3), or also 8...h1Q 9.Ne3+ Kg3 10.Qb8+ Kf2 11.Nxg4+ Ke2 12.Qe5+=; B2) - 8 gxf5 9.Qxf5 h1q 10.Qe4Kh2 11.Qh7+ Kg1 12.Qb1+ Kh2 13.Qh7+ positional draw. E.Eilazyan L.Gonzalez D.Gurgenidze Total = 8.0 O.Pervakov L.Salai - 1.5
5 Study.5 4 th prize, Gorgiev 100 MT 2010 Win 1.d6! 1.Ndc5+!? Ka5! 2.d6 a2 3.d7 Rb8 4.Nb3+ Kb6= 1...a2 1...Ka5 2.Ne5! (2.Ndc5? a2 3.d7 Rb8 4.Nb3+ Kb6=) 2...a2 3.d7 Rb8 4.Nc6++ fork 1 2.Nc3+ Ka5 2...Kb4 3.Nxa2+ Rxa2 4.Ne5 Ra8 5.d7+ 3.Nxa2 Rxa2 And on the board a position which generally is won by the White. However, to reach a win not so simple. 3...Rd2 4.Ne5 Rxd6 5.Nc4++ fork-2 4.Bd3!! zz 4.Nc5!? Kb6 (not 4...Rd2? 5.Nb3+ fork-3) 5.d7 Kc7 (Rd2)= 4...Ra4 4...Ra1+ 5.Kf2 Rd1 6.Ke3 Re1+ 7.Kd4 Rc1 8.Kd5 Rd1 9.Ne5+ ; 4...Rd2 5.Ne5 Rd1+ 6.Kf2 Kb6 7.Ke3 Ra1 8.Kd4+ ]\ 5.Nc5 5.Ne5!? Kb6 6.Kf2 Rd4 7.d7 Kc7= 5...Rg4+! 5...Rd4 6.Nb3++ fork-4 6.Kf2 Kb6 7.Nd7+! blocking Pd6! Kb7 7...Kc6 8.Ne5+ fork-5 8.Be4+! Kc8 8...Rxe4 9.Nc5+ fork-6 9.Nb6+ Kd8 10.Ke3! Thematic try 10.Kf3!? Rg6! (not 10...Rh4? 11.Ke3 Rh6 12.Nc4 Kd7 13.Bf5+ Kc6 14.Ne5+ Kd5 15.d7+ ) 11.Nc4 (11.Bxg6 model stalemate) 11...Rf6+! 12.Ke3 Kd7!= 10...Rg6 11.Nc4! Compare this position wth position of the thematic try after 11.Nc4. Thanks to the move 1.Ke3! the Black have no check. 11.Bxg6? model stalemate 11...Rf6 12.Kd4+ E.Eilazyan L.Gonzalez D.Gurgenidze Total = 6.5 O.Pervakov L.Salai - 2.0
6 Study.6 Special prize, Botvinnik 100 MT 2011 Win 1.Kb3! 1.Nc5? a2 2.Nb3+ (2.Nd3+ Kb1=) 2...Kb1 3.Nd2+ Kc1 4.Nb3+ Kb1 positional draw 1...bxa a2 2.Kxa2 c6 3.Nab6+ ; 1...c6 2.Nab6 Re8 3.Nf4 Re4 4.Nd3+ Kb1 5.Kxa3+ 2.Kxa3 c6 3.Ne7! Rc7 4.Nxc6! Rxc6 5.b5 Rc Rc5 6.Kxa4 Rc4+ 7.Kb3+ 6.Kxa4 A) Kc2 7.a6! Rc4+ 8.Ka5! Thematic try 8.Ka3? Kc3 9.a7 Rc8 10.b6 Rd8!! (10...Ra8? 11.Ka4 Kc4 12.Ka5 Kc5 13.Ka6 Rd8 14.e4+ ) 11.b7 Rd1 12.Ka4 Kc4 13.Ka5 Kc5 14.Ka4 Kc4 15.Ka3 Kc3 16.Ka2 Rd2+ 17.Kb1 Rd1+ 18.Ka2 Rd2+ positional draw) 8...Kb3 9.Kb6 Kb4 10.a7 Rc8 11.Ka6! Rh Kc5 12.b6 Rd8 13.e4 Rf8 14.e5 Rf4 15.e6+ 12.b6 Kc5 13.b7 Rh6+ 14.Ka5 Rh1 15.Ka4 Kc4 16.Ka3 Kc3 17.Ka2+ ; B) Kb2 7.a6 Rb3 8.e3!! zz Thematic try 8.e4? Kc3 9.a7 Rb1 10.b6 Kc4 11.Ka3 Rh1!! (11...Rg1? 12.Kb2 main line) 12.Kb2 Rh2+ 13.Kc1 Kc3 14.Kd1 Kd3 15.Ke1 Ke3 16.Kf1 Kf3 and impossible the check a8q+, because a8 h1 blocked by wpe4 17.Ke1 Ke3 positional draw 8...Kc3! 8...Rxe3 9.b6 Ra3+ 10.Kb5 Rb3+ 11.Kc6 Rc3+ 12.Kb7+ 9.a7 Rb1 10.b6 Kc4 11.Ka3 Rg1 12.Kb2 Rg2+ 13.Kc1 Kc3 14.Kd1 Kd3 15.Ke1 Kxe3 16.Kf1 Rf2+ 17.Kg1 Ra2 18.b7+ E.Eilazyan L.Gonzalez D.Gurgenidze Total = 6.5 O.Pervakov L.Salai B, Iosebidze Str. Ap. 132, Tbilisi, 0160, Georgia iuri.akobia@gmail.com
Step 2 plus. 3 Mate in one / Double check: A 1) 1. Re8# 2) 1... Rb1# 9) 1. Nxd6# 10) 1... exd4# 11) 1. Rc7# 12) 1. Rc4# 6) 1. d8q# 3) 1...
Step 2 plus 3 Mate in one / Double check: A 1) 1. Re8# 5) 1. Bxd5# 2) 1.... Rb1# 6) 1. d8q# 3) 1.... Ng3# 7) 1. Nf7# 4) 1.... Bxc3# 8) 1. Nf8# 4 Mate in one / Double check: B 1) 1. Nb4# 5) 1. Bg5# 2) 1....
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Step 2 plus 3 Mate in one / Double check: A 1) 1. Re8# 2) 1.... Rb1# 3) 1.... Ng3# 4) 1.... Bxc3# 5) 1. Bxd5# 6) 1. d8q# 4 Mate in one / Double check: B 1) 1. Nb4# 2) 1.... Rf3# 3) Drawing 4) 1. Nd7# 5)
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