1.Rg2+ Kh4 2.Bg3+? [2.Rh2+! Kg4 3.Rg2+ Kf3 4.Rf2+ Ke3 5.Bf4+ Kd3 6.Rf3+ Ke4 7.Rf2 Kd3 8.Rf3+ positional draw] 2...Kh3 3.Rxe2 Qb1+ [3...Qc3+ 4.Kf1 Kxg3 5.Re3+ Qxe3 stalemate] 4.Kf2 Qf5+ 5.Kg1 Qf3 [but 5...Qd3!-+ ] 6.Rh2+ Kxg3 7.Rh3+ Kxh3 stalemate
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Related study: Study 21
1.Ka6! [1.Kb6? Ka1 2.Rxh5 b1Q+-+] 1...h4 [1...Ka1 2.Rxh5 b1Q 3.Ra5+ Kb2 4.Rb5+=] 2.Ka5 h3 [2...Ka1 3.Rxh4 b1Q 4.Ra4+ Kb2 5.Rb4+=] 3.Ka4 Ka1 4.Rxh3 b1Q 5.Ra3+ Kb2 6.Rb3+ =
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Study 27
1.Rg2 1.Bxd3? g2+!–+ (1...exd3? 2.Rg2 d2 3.Rg1+ Kh2 4.Rg2+ Kh1 5.Rg1+ perpetual check(R)) 1...Ne1! 2.Bxe4! 2.Rg1+? Kh2 3.Bxe4 g2+–+ 2...Nxg2 2...Nf3 3.Rg1+ Kh2 4.Rg2+ Kh1 5.Rg1+ perpetual check(R)
3.Bf3!! 3.Bxg2+? Kh2 mutual zugzwang -+
3...Rh2 3...gxf3 stalemate; 3...Kh2 4.Bxg2 stalemate 4.Be4 Rh3 4...h3 5.Bf3 gxf3 stalemate 5.Bf3 positional draw - perpetual pinning
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Related study: Study 26
1.a3!! [1.Bc3? bxa2! mutual zugzwang - virtual stalemate (1...Kxa2? 2.Bb4 Ka1 3.Bc3 Ka2 4.Bb4 positional draw) 2.Ba5 Rb4! (2...Rb3+?! 3.Bc3+ Rxc3+? 4.Kxc3 stalemate) 3.Bxb4 Kb2 4.Bc3+ Kxc1 5.Bb2+ Kd1–+ (5...Kxb2? stalemate) ; 1.Bb4? Rxa2 (1...bxa2? 2.Bc3 stalemate 2.Bc3+ b2–+] 1...Ra2 2.Bc3+ b2 3.Rxc2! mutual zugzwang 3...Bxc2+ [3...Rxa3 stalemate] 4.Kxc2 Rxa3 5.Bxb2+ =
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Related study: Study 25
1.Qb5 Nd3+ 2.Qxd3 exd3 3.e8Q Be6 4.Qxe6 Rg5! [4...Rf1+ 5.Be1 fxe6 stalemate with pinned B] 5.Bf2! Rb5 [5...Rg1+! 6.Be1 Rb4 7.Qxa2+! Kxa2 stalemate]
6.Bd4+ [minor dual 6.Qf6+ ] 6...Rb2 7.Qf6! Rxf6 8.Bxf6 stalemate
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Related study: Study 25
1.Re7 Rdd8 2.d7 [2.f7? Rxe7–+] 2...Rg8 [2...Rf8 3.f7 Rb8 4.Re8 Rd8 5.Re7 Rb8 6.Re8 positional draw] 3.f7 Rgf8 4.Re8 Rb8 5.Rc8 Rd8 6.Rc7 Rf8 7.Rc8 Rd8 8.Rc7 positional draw
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Study 23
1.b8Q+ Kg2! 2.Qg8+ [2.Qb7+? Qf3=] 2...Kh1 3.Qh7+! Kg1 4.Qa7+! [4.Qg7+? Rg2! 5.Qd4+ Qf2 6.Qd1+ Qf1 7.Qd4+ Qf2 8.Ra1+ Kh2 9.Qh8+ Kg3=] 4...Kh1 5.Qb7+ Kg1 6.Qb6+ Rf2 7.Rg8+ Kh2 8.Qh6+ Qh3 9.Qd6+ Kh1 10.Qc6+ Kh2 11.Qc7+ Kh1 12.Qc1+! Qf1 [12...Rf1 13.Qc6+ Rf3 14.Qe4 Kh2 15.Qe5+ Kh1 16.Rh8+-] 13.Qh6+ [13.Qc6+? Rf3 14.Qe4 Kh2=] 13...Rh2 14.Qc6+ Rg2 15.Rh8+ Kg1 16.Qc5+ Rf2 17.Rg8+ Kh1 18.Qh5+ [18.Qd5+? Rf3=] 18...Rh2 19.Qd5+ Rg2 20.Rh8+ Kg1 21.Qd4+ Rf2 22.Rg8+ Kh1 23.Qe4+ Rg2 24.Rh8+ Kg1 25.Qe3+ Rf2 26.Kc5! mutual zugzwang 26...Qg2 27.Rh5! Qf1 28.Kb6 [28.Rg5+? Kh1 29.Qe4+ Rg2 30.Rh5+ Kg1 31.Qe3+ Qf2=] 28...Qb1+ [28...Qe2 29.Qg5+ Rg2 30.Qc1+ Kf2 31.Qc5++-] 29.Kc7! [Thematic try: 29.Rb5? Qg6+ 30.Ka5 Kh1!! 31.Qxf2 Qa6+ 32.Kxa6 stalemate; 29.Ka7? Qa2+ 30.Kb6 Qb2+ 31.Rb5 Qf6+=] 29...Qc2+ [29...Qf1 30.Kb8 Qb1+ 31.Kc8 Qc2+ 32.Rc5+-] 30.Kb8! Qb1+ [30...Qc4 31.Qg3+ (31.Rg5+? Kf1 32.Qh3+ Ke1! 33.Qe3+ Kf1 34.Qh3+ Ke1 35.Re5+ Re2=) 31...Kf1 32.Qh3+ Ke2 33.Re5+ Kd1 34.Qh5+ Re2 35.Rd5+ Ke1 36.Qh1+ Kf2 37.Qh2+ Kf3 38.Qh5+ Ke3 39.Qe8+! Kf2 (39...Kf3 40.Rf5+ Kg3 41.Qg6++-) 40.Qf7+ Ke1 41.Rd1++-; 30...Qb2+ 31.Kc8 Qe2 (31...Qc2+ 32.Rc5 Qe2 33.Qg5+ Kh1 34.Qh6++-) 32.Qg5+ Rg2 33.Qc1+ Qf1 34.Rh1+!+- chameleon echo] 31.Kc8 Qf1 32.Rg5+ Kh1 33.Qe4+ Rg2 [33...Rf3 34.Rh5+ (34.Rg3? Qa6+=) 34...Kg2 35.Qg6+ Rg3 36.Qc2+ Qf2 37.Rh2+!+- chameleon echo] 34.Rh5+ Kg1 35.Qd4+ Rf2 36.Rh7 Qa6+ [36...Qc1+ 37.Rc7 Qf1 38.Rg7++-] 37.Kb8 Qb5+ 38.Rb7! Qf5 39.Rg7+ Kh1 40.Qh4+ Rh2 41.Qe1+ +-
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Study 19
1.bxc6 Rxf3 [1...dxc6 2.Qxc6+-] 2.c7+ Ka8 3.Bg2 Qxh5 4.Ka1! [4.Kb2? Qh2–+] 4...Qg4 [4...Qh1+ 5.Bxh1 g2 6.Bxg2+-] 5.Kb2 Qh5 6.Kc1 Qg4 7.Kd2 Qh5 8.Kd1 [8.Ke2? Qh2 9.Kxf3 Qg1–+] 8...Qg4 9.Ke2 Qh5 10.Bxf3+ Qxf3+ 11.Kxf3 +-
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Study 18
1.Bg2 Qxh5 [1...Qf6+ 2.Ka2 Qxb6 3.Bxf3+ Kxa7 4.Rh7+ Kxa6 5.Rc6=] 2.Rc5! Qg4 3.Rg5 [3.Rc3? Re8 4.Bxf3+ Qxf3–+; dual 3.Re5! Rd8 4.h5 Rd2+ 5.Ka1!=] 3...Rxg5 4.hxg5 Qh5 5.Kc1 Qg4 6.Kb2 positional draw - perpetual pinning
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Study 18
1.Be7+ [dual 1.Rf7!= ] 1...Ke8 2.Bh4 [dual 2.Bg5!= ] 2...Bc4+ 3.Kh7 [dual 3.Kh8! f1Q 4.Re7+ Kf8 5.Rd7!=] 3...f1Q 4.Re7+ Kf8 5.h6 [dual 5.Rd7!= ] 5...Bb2 6.d4 Bxd4 7.Rd7 Bg8+ 8.Kh8 Bf6 9.Bxf6 Qxf6 10.h7 Bxh7 [but 10...Be6!–+ ] 11.Rf7+ Qxf7 12.gxh7! Qf1 stalemate
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Related study: Study 22
1.Rf7+ Qxf7 2.gxh7!! g5 stalemate
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Related study: Study 22
1.a7 Qb6 2.dxc4+ Kxf4 3.Qg3+! Kxf5 [3...hxg3 4.fxg3++-] 4.Qxg4+! Kf6 [4...Kxg4 5.f3++-] 5.Qg5+! Ke6 [5...Kxg5 6.f4++-] 6.Qxe5+! Kd7 7.b8N+! Kd8 8.Qf6+! [8.Qg5+? Ke8 9.Qg8+ Ke7 10.Qf8+ Kxf8 11.Nd7+ Kg7 12.Nxb6 Nxc4 13.a8Q Bd3 14.Qg2+ Kh7=] 8...Ke8 9.Qh8+ Ke7 10.Qxh4+ Ke8 11.Qh8+ Ke7 12.Qf8+! Ke6 [12...Kxf8 13.Nd7+ Kg7 14.Nxb6 Nxc4 15.a8Q Bd3 16.Qg2+ Kf8 17.Nd7+ Ke7 18.Qg5+ Kxd7 19.Qd5++-] 13.Qh6+ Ke7 [13...f6 14.Qxf6+! Kxf6 15.Nd7++-] 14.Qe3+ Qxe3 15.Nc6+! Kd7 16.fxe3+- (Albino)
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1.Kd6 f1Q 2.c3+ Ke4 3.Bc4! Kf5 [3...Qb1 4.Bg8 f3 (4...Qd3+ 5.exd3++-; 4...Qh1 5.Bd5++-) 5.Bh7+ Kf4 6.e3++-; 3...Qh3 4.Bd5+ Kf5 5.Be6++-; 3...f3 4.exf3++- (minor dual 4.Bd3+ Kf4 5.e3++-) ] 4.e4+! fxe3 e.p. [4...Kxe4 5.Bxf1+-] 5.Bxf1 exd2 6.Bd3+ Kf4 7.Bc2 Ke3 8.Kd5! Ke2 9.c4 Ke3 10.Ke5! [10.Kc6? Kd4 11.Kb5 Kc3=] 10...Ke2 11.Kd6! Ke3 12.Kd5! zugzwang 12...Ke2 13.Kc6 +- (Albino)
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1.Kb4+ Kd5 [1...Nc3 2.Qxc3+ Kd5 3.d3! Qxe2 4.Qc4+ Ke5 5.d4++-] 2.e4+ Kd4 [2...Ke5 3.d4++-] 3.Qa2! Kxe4 [3...Ke5 4.d4++-; 3...Nc3 4.dxc3++-; 3...Ne3 4.dxe3++-] 4.d3+ +- (Albino)
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1.Nb7 Bb6 2.a8Q Ke7 3.Kb8 [3.Qb8? Be6#] 3...Ke6 [3...Kd7 4.Nc5++-] 4.Nd8+! [4.Nc5+? Bxc5=; 4.Qa7? Bxa7+ 5.Kxa7 Bc4=] 4...Kd6 5.Nf7+ Ke6 [5...Kc5 6.Qb7! Bxb7 7.Kxb7 Kb5 8.Nd6+ Ka5 9.Nc4++-] 6.Ng5+ Ke5 [6...Kd6 7.Ne4++-] 7.Qb7! [7.Nf3+? Kd6 8.Qb7 Bxb7 9.Kxb7 Be3! (9...Kc5? 10.Nd4!+-; 9...Bf2? 10.Ne1! Kd5 11.Nd3 Bd4 12.Nb2!+-) 10.Ne1 Kd5 11.Nd3 Kc4=] 7...Bxb7 8.Kxb7 Be3 9.Kc6 +-
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Study 15
1.Bd5 Ne2 2.Kc2 Nf4 3.Be4 Ng2 [but 3...Kg1! 4.Bg3 h1Q 5.Bxh1 Nh5! 6.Bd5 (6.Be5 Kxh1–+) 6...Nxg3 7.Kd3 Kf2–+] 4.Bg3 h1Q 5.Kd2 Kg1 [5...Qg1? 6.Bd3#] 6.Kd3! Kf1 [6...Qh2 7.Bxh2+ Kxh2 8.Bf5=] 7.Kd2 Kg1 8.Kd3 Ne1+ 9.Ke3 Nc2+ 10.Kd3 Nb4+ 11.Kd4 Nc6+ [but 11...Qg2! 12.Bxg2 Kxg2 13.Bd6 Kf3!–+; 11...Nc2+ 12.Kd3 positional draw] 12.Ke3 Qg2 13.Bxg2 Kxg2 14.Bd6! [14.Kf4? Ne5–+; 14.Bc7? Nd8 15.Ke4 Ne6 16.Be5 Ng7–+] 14...Nd8 15.Ke4 Ne6 16.Kf5=
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Study 15
1. Bc2! Rxa3+
2. Kc4+ Kh8 2... Kh6 3. Rg6+ Kh5 4. Rxg7 +- 3. Rh1+ 3. Bb3? Ra5 = 3... Kg8 4. Bb3!
4... Ne6 4... Ra5 5. Kb4+ +-; 4... a5 5. Kc3+ Kf8 6. Kb2 +- 5. Kb4 Rxb3+ 6. Kxb3 Nd4+ 7. Kc4 Nxe2 8. Rf1 Kh7 9. Rf2 Ng3 10. Rh2+ Kg6 11. Rg2 +-
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Study 13
1.Nd5! [1.Bg7+? Kg8 2.Bxc3 Nd6+=] 1...Nxd5 [1...a1Q 2.Bg7+ Kh7 3.Bxc3++-] 2.Bg7+ Kg8 3.Rxb7 Nc7+! 4.Rxc7 a1Q [4...b2 5.Bxb2 a1Q 6.Rg7+ (6.Bxa1? stalemate) 6...Kh8 7.Rg2+ (7.Bxa1? stalemate) 7...Kh7 8.Bxa1+-] 5.Bxa1 b2 6.Ra7! mutual zugzwang [6.Bxb2? stalemate] 6...b1Q 7.Rg7+ Kh8 8.Rg1+ +-
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Related study: Study 10
1.Nc3! [1.Nd4? g4 2.Kg7 a5! (2...g3? 3.Ne2 g2 4.Kf6 =) 3.Kf6 a4/g3 4.Ke5 g3/a4 5.Ne2 a3! –+] 1...g4 2.Kg7 a5 3.Kf6 g3 4.Ke5! a4 5.Kd4! Réti manoeuvre 5...a3 [5...g2 6.Ne2 a3 7.Kc3=] 6.Ke3=
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Related study: Study 8
1.Kc1 Ke5 2.Kd1 Kd4 3.Ke2 Ke4 4.Kf2 Kf4 5.Ke2 Kg3 [5...Ke4 6.Kf2 positional draw] 6.Kd3! [6.Ke3? e5! mutual zugzwang 7.Ke2 Kg2! 8.Ke1 Kf3 9.Kf1 Ke3 (or 9...e4 10.Ke1 Ke3) 10.Ke1 e4 mutual zugzwang] 6...e5! [6...Kf3 7.Kxc3 e5 8.Kd2 Kf2 9.Kd3 Kf3 10.Kd2 positional draw] 7.Ke3! mutual zugzwang [7.Kxc3? e4 8.Kd2 Kf2–+] 7...Kg2 8.Ke2 e4 [8...Kg1 9.Ke1 Kg2 10.Ke2 Kg3 11.Ke3 positional draw] 9.Ke1! Kf3 10.Kf1 Ke3 11.Ke1 Kf3 12.Kf1 e3 [12...Ke3 13.Ke1 positional draw - fortress] 13.Ke1 e2 stalemate
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Related study: Study 7
1.Kb5 [1.Rxb3? a2–+] 1...a2 2.Rd7+ [2.Rd1? Nc1! 3.Rxc1 b3–+] 2...Ke6 3.Ra7 Na5! 4.Ra6+! [4.Rxa5? b3–+] 4...Kd7 5.Ra7+! Kd6! 6.Ra6+ Kc7 7.Ra7+ Kb8 8.Rxa5 b3 9.Kc6 b2 10.Rb5+ Ka7 11.Ra5+ Kb8 12.Rb5+ Kc8 13.Rh5! Kd8 14.Kd6 Ke8 15.Ke6 Kf8 16.Kf6 Kg8 17.Rg5+ Kh7 18.Rh5+ Kg8 19.Rg5+ Kf8 20.Rh5 positional draw
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Related study: Study 6
1.Kf2 Kg4 2.Ke3! mutual zugzwang 2...h6 [2...h5 3.Kf2 Kf4 4.Kf1! Ke3 5.Ke1 f2+ 6.Kf1 Kf3 7.h3 Kg3 8.h4 Kf3 stalemate] 3.Kf2 Kf4 4.Ke1! [minor dual 4.Kg1 ; 4.Kf1? Ke3 mutual zugzwang 5.Ke1 h5 6.Kf1 h4 7.Ke1 f2+ 8.Kf1 Kf3–+] 4...Ke3 5.Kf1 mutual zugzwang 5...f2 [5...h5 6.Ke1! h4 7.Kf1! (7.h3? Ke4 8.Kf1 Ke5! 9.Ke1 Kf5! 10.Kf1 Ke4 11.Ke1 Ke3 12.Kf1 f2 mutual zugzwang) 7...h3 8.Ke1 f2+ 9.Kf1 Kf3 stalemate] 6.h3! Kf3 7.h4 Kg3 8.h5 Kf3 stalemate
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Related study: Study 4
1.Kd7! [1.Kd6? Rh8 mutual zugzwang 2.c6 bxc6 3.Ke6 Kc5 mutual zugzwang 4.a3 a6! mutual zugzwang 5.a4 a5 mutual zugzwang 6.Kf6 Kd6 7.Kg7 Ke7 8.Kxh8 Kxf7 stalemate(8...Kf8) ] 1...Rh8 2.Kd6! mutual zugzwang 2...Kc4 3.c6! bxc6 4.Ke5! [4.Ke6? Kc5 mutual zugzwang] 4...Kc5 5.Ke6! mutual zugzwang 5...a6 6.a3! a5 7.a4 Kd4 8.Kf6 Kd5 9.Kg7 Ke6 10.f8Q +- [10.Kxh8? Kxf7 stalemate]
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Related study: Study 2
1.a6 Ra1 [1...Rf8 2.a7 Kd4 3.d7+-] 2.Bg1+! [2.d7? Rd1=] 2...Rxg1 [2...Ke4 3.a7+-] 3.Kh8! Rh1+ [3...Rb1 4.a7 Ra1 5.d7+-; 3...Rc1 4.d7 Rd1 5.a7+-] 4.Kg8! Rd1 5.a7 Rg1+ 6.Kf8! Rf1+ 7.Ke8! +-
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Related study: Study 2