The Nightmare. Glarean Magazin / 2004/05. 1 von 6

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1 1 Glarean Magazin / 2004/05 Home Studien einer Ausstellung Eigenmann Endspiel Test The Nightmare Der Swiss-Test Die COMP2007 Zug der Woche Top-Programme 2006 Das h6-syndrom Tod auf b2 Amateur-BlunderCheck Computer-Strategien I Computer-Strategien II Chess960 Schach-Rätsel 2007 Mixed Pickles The Nightmare...ist eine Sammlung von extremen Schach-Aufgaben, die zu lösen auch für neueste Hard- und Software ein ganz besonderer «Alptraum» darstellen dürfte. Denn diese dreissig Mittel- und Endspiel-Stellungen sind nicht einfach «bloss» schwierig, sondern sie legen den Finger je ganz gezielt in die quasi «strukturellen» Wunden der Schachprogrammierung... Trotzdem sind die Positionen wohl nicht grundsätzlich unlösbar; für einen Programmierer dürfte es also recht aufschlussreich sein, wie lange seine Engine jeweils zu knabbern hat. Anwendern, welche die Sammlung als Test-Suite verwenden möchten, empfehle ich bei sehr schneller Hardware eine Bedenkzeit von mindestens fünf, ansonsten mindestens zehn bis fünfzehn Minuten pro Stellung. Die Kommentierungen wurden in besonders sorgfältiger häuslicher Analyse-Arbeit erstellt; gleichwohl können/wollen sie nicht erschöpfend sein, sondern verstehen sich nur als Skizzierungen. Viel Spass! Walter Eigenmann / Rothenburg 2005 Spiel-Wiese Anekdoten Satiren Archiv Privates Links Rätsel-Lösungen Kontakt Gästebuch Projekte Das Glarean Magazin Nightmare Nr.001 Georgiev - Ionescu Constantin Lxh7++-[21.Sg4? Sg6=; 21.Se4? Sg6=] 21...Kxh7 [21...Kh8 22.Dh5+-] 22.Se4 Kg8 [22...g6 23.Dg4 Lg7 (23...Kg8 24.Dh4+-) 24.Dh4+ Kg8 25.Dxe7+-] 23.Sg5 g6 [23...Sf5 24.Sxf5+-; 23...f6 24.exf6+-] 24.Sg4 Sf5 [24...Lg7 25.Sf6+ Lxf6 (25...Sxf6 26.exf6+-) 26.exf6 Sf5 27.Df3+-; 24...b5 25.Df3 Sf5 26.Dh3+-; 24...Tc5 25.Df3+-] 25.Txf5 exf5 [25...gxf5 26.Sf6++-] 26.Df2+- Nightmare Nr.002 De Limburg g4+-[1.g3? Lxg3 2.Kxg7 Ld6=; 1.Kf5? Ld6=; 1.Lf3? Ld4 2.d8D+ Kxd8 3.Kf7 Lc5=; 1.Kg5? Lf6+ 2.Kf5 (2.Kg4 Kd6=) 2...Ld4=] 1...hxg3 [1...Lc3 2.d8D+ Kxd8 3.Kf7 Lf6 4.Lc6 Lg5 (4...Le7 5.Kxg7+-) 5.Kxg7+-; 1...Lf6 2.g5+-; 1...Ld4 2.d8D+ Kxd8 3.Kf7+-] 2.h4 Lf6 3.h5 Le5 [3...Lb2 4.Lg2+-] 4.Lg2 Lc3 [4...Lc7 5.Kxg7 Kxe6 6.Lh3+ Ke7 7.h6+-] 5.d8D+ Kxd8 6.Kf7 Lb4 7.Lh3 Ld6 8.Kxg7+- Nightmare Nr.003 Mishin-Kuznecov CorrGame Txc3 mit Angriff 17.Dxc3 [17.bxc3 Da5 18.Lc4 Sd7 19.f4 Sf6 20.Te1 Da3+ 21.Kd1 Se4 mit Angriff] 17...Se4 18.Db4 Sf2 mit Angriff

2 Nightmare Nr.004 Skuja&Giese c6+-[1.cxd6? hxg6=; 1.gxh7+? Kxh7=] 1...Txc6 [1...d5 2.Tc3 hxg6 a) 2...e5 3.a4 bxa4 (3...d4 4.Tc1 bxa4 (4...hxg6 5.axb5+-) 5.b5+-) 4.c7 d4 5.Tc5 a3 (5...hxg6 6.b5 a3 7.b6+-) 6.Td5 Tf8+ 7.Kg2 a2 8.Td8+-; b) 2...d4 3.Tc1+-; 3.a4 bxa4 4.b5 a3 (4...d4 5.Tc1+-) 5.Txa3 Kf7 (5...d4 6.Ta4+-) 6.Tc3 Ke7 7.b6 Tf8+ 8.Ke2+-; 1...e5 2.a4 bxa4 3.b5+-; 1...hxg6 2.Tc3+-] 2.Tf8+ Kxf8 3.gxh7 Tc2+ 4.Kg3 Tc3+ 5.Kg4 Tc4+ [5...d5 6.h8D+ Kf7 7.Da8+-; 5...e5 6.h8D+ Kf7 7.Dd8+-; 5...Ke7 6.h8D Txa3 (6...Tc4+ 7.Kg5+-) 7.Dxg7++-] 6.Kg5+- Nightmare Nr.005 Troitzky Le2++-[1.Lf1? Dg7 2.Lh3+ (2.Lxa6 Dxd4 3.Le2+ Kf5 4.e7 De5-+) 2...Kf3 3.Lg2+ (3.g4 Dxd4-+) 3...Ke3=; 1.Lxa6? Dxe6 2.Le2+ Kf5 3.Lxh5 De1=; 1.d5? Df6 2.Le2+ Kf5 3.Ld3+ Ke5=; 1.Ld5? Dg7 2.Se2 Df6=] 1...Kf5 2.Sd5 Dxe6 [2...Dd8 3.e7+-] 3.Ld3+ Kg4 4.Le4 Dh6 [4...Dxe4 5.Sf6++-] 5.Sf4 Df6 [5...Dg7 6.Sd3 Dxd4 7.c6 Dxe4 8.Sf2++-; 5...Dh8 6.Sd3+-] 6.Sd3 Dxd4 7.c6 Dxe4 [7...a5 8.b5 Dxe4 9.Sf2++-] 8.Sf2++- Nightmare Nr.006 Nunn - Shirov Dt.BL Txc4Initiative [23...h6?! 24.Lxf6 Lxf6 25.Tfa1=; 23...Lxb5?! 24.cxb5 h6 (24...Dc7 25.Tc1=; 24...Db6 25.Le3=) 25.Lxf6 Lxf6 26.Tfa1=; 23...Ta8?! 24.Tfa1 Lb7 25.Sc1 Db6 26.Sb3=; 23...Lb7?! 24.Tfa1=] 24.Lxf6 [24.Dxc4 Db6 25.Dc7 Dxb5 mit Angriff] 24...Lxf6 25.Dxc4 Db6 26.Dc7 Dxb5 27.Dxd6 [27.Te1 Ld8 28.Dxd6 Db6 29.Dxe5 Lf6 mit Angriff] 27...Kg7 mit Angriff Nightmare Nr.007 Matous Lc7[1.gxh7+? Kh8=; 1.gxf7+? Dxf7+=; 1.Dxa8? De6+=] 1...Dxc8 2.gxf7+ Kh8 3.Le5 Dc5 4.Lb2 Sc7 5.La1 a4 6.Lb2 a3 7.La1 a2 8.Lb2 a1d 9.Lxa1 Sd5+ 10.Ke6+ Sc3 11.Lxc3+ Dxc3 12.f8D# Nightmare Nr.008 Jussupow - Kasparov Linares c3-+[39...Td8? 40.Dxb4 Dxe4 41.g4 Le6 42.De7 Td2 (42...Td3 43.Df6+=) 43.Df6+ Kg8 (43...Kf8 44.Dh8+ Ke7 45.Df6+=) 44.Tg3 Da8 (44...c3 45.f5=) 45.f5=; 39...Ld7? 40.Dxb4 mit Angriff] 40.Txc3 [40.Dxe8 Dd7 41.Dxd7 Lxd7 42.e6 (42.Td3 Le6-+; 42.Tf1 b3-+) 42...Lxe6 43.f5 (43.e5 Ld5-+) 43...Lc4 44.f6+ Kg8-+; 40.Tf1 Ld7 41.Da2 Le6-+] 40...Ld7 41.Tc4 Lxa4 42.Txd4 Tb8 43.Lf1 [43.Td2 b3-+; 43.g4 Lc2-+] 43...Lc2 44.Lc4 b3-+ Nightmare Nr.009 Akesson-Shulman(Var) RiltonCup Txe4+- Lh2+ 18.Kxh2 Dxe4 19.Te1 Dxc4 20.b3 Dc5[20...Db5 21.Lh6 Tf5 22.Sb6+-; 20...Da6 21.Sxc7+-] 21.Le7+-

3 Nightmare Nr.010 Queckenstädt g4+-[1.d4? exd4 2.Le2 d3+ 3.Kxd3 Lc6 4.a7 c4+ 5.Kd2 e5 6.Lf3 e4=; 1.Le2? e4 2.dxe4 Lc6=] 1...Lc6 [1...La4+ 2.Kd2 Lc6 3.Lg2 Kb5 4.a7 Ka6 5.Lxc6 Kxa7 6.Ld7 f5 7.g5+-; 1...f5 2.Lg2 e4 3.dxe4 Lc6 4.exf5 Lxg2 5.fxe6+-] 2.Lg2 Lxg2 3.e4 f5 [3...c4 4.a7 cxd3+ 5.Kxd3+-] 4.gxf5 exf5 [4...c4 5.fxe6 cxd3+ 6.Kd2+-] 5.a7 fxe4 6.d4 e3 [6...exd4 7.a8D d3+ 8.Kc1+-] 7.dxe5+- Nightmare Nr.011 Volokitin - Kozul Portoroz Sxf7+-[14.Se4? Sxe4 15.Dxe4 Lf6=] 14...Kxf7 [14...Db6 15.De6+-] 15.De6+ Kf8 [15...Kg6 16.d4 Se5 17.Txe5 dxe5 18.Ld3+ e4 19.Lxe4+ Kh5 20.Dh3#] 16.g4 a6 [16...Db6 17.g5 Dxb2 (17...Tad8 18.gxf6 Sxf6 19.Te2 Dxb2 20.Tg2+-) 18.gxf6 Sxf6 19.Le5+-; 16...h6 17.h4+-] 17.g5+- Nightmare Nr.012 Hasek Kd4=[1.Sf4? a5 2.Kd2 Lg8 3.Kc1 Lh7-+; 1.Se5? Lg8-+; 1.Kd2? a5-+] 1...a5 2.Sc5 Lg8 [2...a4 3.Sxa4 Kxa4 4.Kd3 Kb5 5.Kd2 Kc4 6.Kc1=] 3.Sa4 Kxa4 [3...Lh7 4.Kd5 Le4+ 5.Kd4=] 4.Kc5 Ld5 5.Kb6= Nightmare Nr.013 Akopian - Khenkin Tilburg Txf4 Initiative Lxf4 [15...Ld4+ 16.Kh1 Sce5 17.Sxe5 Lxe5 18.Taf1 mit Angriff] 16.Sd5 Sce5 [16...Lg5 17.Tf1 Sd4 (17...Txg6 18.Dxg6+-) 18.h4+-] 17.Sdxf4 d6 [17...Txg6 18.Sxg6 d6 19.Tf1 mit Angriff] 18.Tf1 mit Angriff Nightmare Nr.014 Kasparian h4+=[1.Ta3? Td3 2.Kg2 Kh4 3.Kg1 (3.Kf2 f3-+; 3.h3 Lc6+-+) 3...f3 4.Kf2 Tc3 5.h3 (5.La4 Txa3 6.Lxb5 Kg4-+) 5...Td3-+] 1...Kxh4 2.Th6+ Kg5 [2...Kg3 3.Tg6+ Kf2 (3...Kh3 4.Th6+=) 4.Tg2+ Ke3 (4...Ke1 5.Ld5 Tf1+ a) 5...Td3 6.Tg4 Td4 (6...f3 7.Lxf3=) 7.Kg1=; b) 5...Th3+ 6.Kg1 Le2 7.Tf2=; 6.Kh2 Le2 (6...Tf2 7.Kg1 Txg2+ 8.Lxg2=; 6...f3 7.Tc2 Le2 8.Tc1+ Ld1 9.Lc4 Tf2+ 10.Kg3 Tg2+ 11.Kf4 f2 12.Txd1+ Kxd1 13.Kf3=) 7.Tg6 Kf2 (7...Lf3 8.Lxf3 Txf3=) 8.Tb6=) 5.Ld5 Tf1+ (5...Th3+ 6.Kg1=) 6.Kh2 Le2 7.Tg8 Lf3 8.Lxf3 Kxf3 9.Tf8=] 3.Th5+ Kxh5 4.Ld1 Kg4 5.Kg2 Lc6 6.Le2 Ld5 7.Ld1= Nightmare Nr.015 Hellers - Hansen Malmo Lxh6=[20.f6? Txc3 21.fxe7 Te8 22.Dd1 Txe7-+] 20...gxh6 [20...Txc3 21.Dd2 Te3 22.Lxg7=] 21.f6 (Var): 21...Txc3 [21...Sec6 22.Dd2+-; 21...Sac6 22.Dd2=] 22.Dd2 Te3 23.fxe7 Te8 [23...Tb8 24.g5 De8 (24...Sc4 25.Df2+-) 25.Dg2+-; 23...Ta8 24.g5 Txe1 25.Dxe1+-; 23...Tc8 24.g5 Txe1 (24...De8 25.g6+-) 25.Dxe1+-] 24.Sg6 fxg6 [24...Da3 25.Df2=] 25.Df2 Txe1 26.Df7+ Kh8 27.Txe1=

4 Nightmare Nr.016 Saemisch Ke7+-[1.Kg7? a1d 2.Txa1 Txa1 3.f8D Te1 4.Df2 Te4=; 1.Kg8? a1d=] 1...Te3+ 2.Kf6 Tf3+ [2...Tb3 3.Ta1 Tf3+ 4.Ke7 Te3+ 5.Kd6 Tf3 6.Txa2+ Kb8 7.Ke7+-] 3.Kg7 Ta3 [3...Ka6 4.f8D Txf8 (4...Tb3 5.Da8+ Kb5 6.Dxa2+-) 5.Kxf8 Kb5 6.Tc1 Kb4 (6...a1D 7.Txa1 Kc4 8.Td1+-) 7.Ke7 Kb3 8.Kd6+-; 3...b6 4.f8D Txf8 5.Kxf8 bxc5 6.dxc5+-] 4.f8D a1d 5.Txa1 Txa1 6.Df2+- Nightmare Nr.017 Kramnik - Bareev WijkAanZee Lf6+-[46.Ke4? Tc8=; 46.a3? Tc8=] 46...g6 [46...gxf6 47.exf6 Tc8 (47...Sh4 48.Kg4+-) 48.Txc8 Kxc8 49.Kg5 Kd7 (49...Sd4 50.h6+-) 50.a3+-; 46...a3 47.Lxg7 Sxg7 48.h6 f6 49.hxg7 fxe5+ 50.Kxe5 Txg7 51.Kd6+-] 47.hxg6 fxg6 48.Kg5+- Nightmare Nr.018 Chandler - Wahls NoviSad Kh8?+-[besser 18...Lxf6 19.gxf6 Txd1+ 20.Kxd1 Dc8=] 19.Ld3 Sd5 [19...Txd3 20.Txd3 Sd5 a) 20...Lc4 21.Tdd1+-; b) 20...Sc4 21.Sh5 Lf8 (21...Sxe5 22.Dxe5+-) 22.Lc3+-; 21.Sxd5 Lxd5 22.h4+-; 19...Sd7 20.Dh4+-] 20.Dh4+- Nightmare Nr.019 Asauskas - Malisauskas Vilnius Df6++-[19.Tgh3? Th8=] 19...Lxf6 [19...Kg8 20.Txh7 Kxh7 21.Th3+ Kg8 22.Dh8#] 20.gxf6+ Kg8 [20...Dxf6 21.exf6+ Kxf6 (21...Kg8 22.Txh7 Kxh7 23.Th3++-) 22.Lxc5+-] 21.Txh7 Kxh7 22.Th3+ Kg8 23.Lh6 Dc7 24.f4+- Nightmare Nr.020 Lommer Sab3++-[1.Sxc2+? Kb1 2.Sa3+ Kc1=] 1...Kb1 2.Sb5 h5 [2...h6 3.gxh6+-] 3.gxh6 gxh6 [3...g5 4.h7 g4 5.h8D g3 6.Dh1+ Sc1 7.Sc3#] 4.e4 h5 5.e5 h4 6.e6 h3 7.e7 h2 8.e8D h1d 9.Dg6+- Nightmare Nr.021 Uhlmann - Malich Berlin Txf2+=[53...Lc5? 54.Td8+ Ke7 (54...Kg7 55.d4+-) 55.Td7+ Ke6 (55...Kf8 56.d4+-) 56.d4 Lb6 57.Kf3+-] 54.Kxf2 [54.Kg1 Tb2=] 54...Lc5 55.Kf3 [55.Ke3 f5 56.h4 (56.g4 Kf7=) 56...gxh4 57.gxh4 Ke7 58.Ld7 Kf6=] 55...Lxd4 56.Ke4 Lf2 57.g4 Lb6= Nightmare Nr.022 Kortschnoj - Shirov Madrid Tf6Initiative [24...d3?! 25.Dxd3 f3 26.Dc3 Dg3 Nightmare Nr.023 Geller - Filipowicz Sc5+-[18.Tac1? 0-0=; 18.Tad1? 0-0=; 18.Tfd1? 0-0=] 18...Lxc5 [18...Dd6 Nightmare Nr.024 Van Scheltinga Kc2+-[1.Te8+? Kxe8 2.a7 a2 3.a8D+ Ke7=; 1.a7? a2 2.Te8+ Kxe8 3.a8D+ Ke7=]

5 The Nightmare 5 27.Tf2=; 24...f3?! 25.Lxf3 Lxf3 (25...Txf3 26.Txf3=) 26.Txf3 Txf3 27.Dxf3 Tf8 28.Dg4 Df2+ 29.Kh1=] 25.Lxd4 [25.Db5 f3-+; 25.c5 Tg6-+] 25...Tg6 26.Kh1 [26.Dd3 Dg5 27.Tf2 f3 28.e5 (28.c5 Dg3 mit Angriff) 28...dxe5 mit Angriff; 26.Lxa7 Txe4-+] 26...Txg2 27.Kxg2 Txe4 mit Angriff 19.Tad1+-] 19.Lxc5 Lb5 20.Df2 Lxf1 [20...Sc6 21.Sxb5 axb5 22.a6+-] 21.Lxb4 Lc4 [21...Lb5 22.Sxb5 axb5 23.Le2+-] 22.b3 Lb5 23.Sxb5 axb5 24.Le a2 [1...Th2+ 2.Kb1 Tb2+ 3.Ka1 Tb4 4.Ka2 Ta4 (4...Txd4 5.Kxa3 Td1 (5...Txf4 6.Th8+-) 6.Kb2 Td2+ (6...Td4 7.Ta7++-) 7.Kb3 Td1 8.Ta7+ Kf8 9.Tb7 Ta1 10.a7+-) 5.a7 Ta6 (5...Ta5 6.f5 exf5 7.e6 f6 (7...f4 8.Th8+-) 8.gxf6+ Kxe6 9.Te8++-) 6.f5 exf5 7.e6+-] 2.Kb2 Ta3 3.Ka1 Ta4 [3...Kd7 4.a7 Kc6 5.Tc8+ Kb7 6.Tf8 Kxa7 7.Txf7++-] 4.a7 Ta6 [4...Ta3 5.f5+-] 5.f5 exf5 6.e6 f4 [6...f6 7.gxf6+ Kxe6 8.Te8++-] 7.Th8 f3 [7...f6 8.gxf6+ Kxe6 (8...Kxf6 9.a8D+-) 9.a8D Txa8 10.Txa8 g5 (10...Kxf6 11.Tf8++-) 11.Tg8+-; 7...Kxe6 8.a8D Txa8 9.Txa8 Kf5 10.Tf8+-] 8.a8D Txa8 9.Txa8 f2 10.Ta7++- Nightmare Nr.025 Kholmov - Bronstein Kiew Sc6 mit Angriff Sxc6 19.e5 Lg5+ [19...Lxe5 20.f6 Lxf6 21.Ld3 Lg5+ 22.Txg5 mit Angriff] 20.Txg5 f6 21.exd6 Df7 22.Tg3 bxc3 23.Lc4+- Nightmare Nr.026 Nunn - Ward GB-TC Lg7+-[20.Sh4? Tab8=; 20.Tde1? Tab8=] 20...Lxg7 [20...Tab8 21.Lxh8 Kxh8 (21...Lxf5 22.Lxf6+-; 21...Dxb2+ 22.Kd2+-) 22.Sxe7+-; 20...Lxf5 21.Lxh8 Kxh8 22.gxf5+-] 21.Sxg7 Teb8 [21...Kxg7 22.Sd5 Dc5 (22...Sxd5 23.Dh6++-) 23.Dh6+ Kf7 24.g5+-; 21...Tab8 22.Sxe8 Lxe8 23.b3+-] 22.Sh5 Sxh5 [22...Dxb2+ 23.Kd2 Lc6 (23...Se8 24.Dxe7+-; 23...Tf8 24.Sxf6+ exf6 25.Dd5++-; 23...Sxh5 24.gxh5+-) 24.Sxf6+ exf6 25.Dxf6+-; 22...Se8 23.Sf4 De3+ (23...Dxb2+ 24.Kd2 Db6 (24...Sf6 25.Txh7+-) 25.Ke2+-) 24.Td2 Sf6 25.Scd5 Sxd5 26.Dxd5++-] 23.gxh5 Le8 [23...Dxb2+ 24.Kd2 Db6 25.Ke2+-] 24.b3+- Nightmare Nr.027 Kasparian Ld4=[1.Kg1? e3 2.Kf1 (2.Td1 Lc2-+) 2...Lh5 3.Lc3 Kg3 4.Tg8+ (4.Le1+ Kf3 5.Td3 Tb1-+) 4...Lg4-+] 1...Tb1+ [1...Tb4 2.Kg1 Kg3 3.Lf2+ Kf3 (3...Kxf4 4.Tf8+ Ke5 (4...Lf5 5.Kf1=) 5.Le3=) 4.Td1 e3 5.Lh4=] 2.Lg1 e3 [2...Lf7 3.f5 Lc4 (3...e3 4.Td3 Kg4 5.Txe3=) 4.f6 Tf1 (4...e3 5.f7 Lxf7 6.Td3 Kg4 (6...Te1 7.Txe3+) 7.Td4+ Kf5 8.Kg2=) 5.Td7 Txf6 6.Td2=; 2...Lf5 3.Td3+ Kg4 4.Td2 Kxf4 5.Tf2+ Ke5 6.Td2=] 3.Th8+ Kg4 [3...Kg3 4.Tg8 Kf3 (4...Kh4 5.Txg6 e2 6.Te6=) 5.Txg6 e2 6.Te6=] 4.Tg8 e2 [4...Kf5 5.Kg2 e2 6.Lf2 Tf1 7.Tf8+ Ke6 8.f5+ Ke7 9.Lc5+=] 5.Txg6+ Kf5 [5...Kf3 6.Te6 e1d 7.Txe1=] 6.Tg5+ Kf6 [6...Kxf4 7.Tg2 e1d 8.Tf2+ Ke4 (8...Dxf2=; 8...Ke5 9.Te2+=) 9.Te2+=] 7.Te5=

6 Nightmare Nr.028 Kesoene-Rubtsova WCh-Final Sf5 mit Angriff [15.Tg3?! g6=] 15...g6 [15...exf5 16.Dxf7+ Kh8 17.Dxe8+ Lf8 18.Dxf8#; 15...Sxb3+ 16.axb3 Se5 (16...g6 17.Sh6+ Kg7 18.Dh4 mit Angriff) 17.Sxg7 Kxg7 18.Ld4 b4 (18...Kg8 19.Tg3 Td8 20.f4 mit Angriff) 19.f4 bxc3 20.Lxc3 mit Angriff; 15...Td8 16.Ld5 g6 (16...Lb7 17.g6 fxg6 (17...hxg6 18.Txg6+-) 18.Txg6 hxg6 19.Dxg6+-) 17.Dh6 Lf8 18.Lxc6 Dxc6 19.Dg7+ Lxg7 20.Se7+ Kh8 21.Sxc6 mit Angriff; 15...Se5 16.Sxe7+ Txe7 17.f4 Sxb3+ 18.axb3 Sg6 19.f5 mit Angriff] 16.Sh6+ Kg7 [16...Kh8 17.Sxf7+ Kg8 18.Dh4 Tf8 (18...Kxf7 19.Dxh7+ Kf8 20.Tg4+-) 19.Sh6+ Kh8 20.Sg4 mit Angriff; 16...Kf8 17.Dh3 Sxb3+ 18.axb3 mit Angriff] 17.Dh4 b4 [17...Sxb3+ 18.axb3+-; 17...Se5 18.Ld4 b4 19.Sa4+-] 18.Sa4 Sxb3+ 19.axb3 Se5 [19...Tb8 20.Sg4 Kh8 21.Tg3+-] (Var.): 20.Ld4+- Nightmare Nr.029 Shredder6 -Crafty18.12(Var) CompGame Te8=[16...a5? 17.fxe5 Lxb3 (17...dxe5 18.Dxd8 Lxd8 (18...Txd8 19.Sxa5+-) 19.Sc5+-) 18.cxb3 dxe5 19.Dd5 Dxd5 (19...Td7 20.Db5+-) 20.Txd5+-; 16...Dc7? 17.f5 Ld7 a) 17...Lxb3 18.cxb3 Dd8 (18...Tc8 19.Lc4+-; 18...Td8 19.Lc4+-) 19.Lc4 Td7 20.Ld5+-; b) 17...Lc8 18.Lxh6+-; 18.Lxh6 Tc8 (18...Dd8 19.Tf3 Lh4 (19...Lf6 20.Tg3+-) 20.Th3+-) 19.f6+-] 17.fxe5 [17.f5 Ld7=] 17...dxe5 18.Dxd8 [18.De1 Dc7=] 18...Txd8 19.Txd8+ Lxd8= Nightmare Nr.030 Vrabec Sf1=[1.Ta6+? Kb7 2.Ta2 b3 3.Td2 (3.Tb2 Tc8+ 4.Kd3 Ka6-+) 3...Tc8+ 4.Kb4 Lc2-+] 1...Le2+ [1...b3 2.Sd2 Ka7 (2...Th3 3.Tf6 b2 (3...f3 4.Sxb3=) 4.Txf4=) 3.Tb4 Th3 4.Kc5 Tc3+ (4...Td3 5.Sxb3 f3 6.Sa5 Ka6 (6...f2 7.Sc6+ Ka6 8.Tb6#) 7.Sc4 f2 8.Tb6+ Ka7 9.Tf6=) 5.Kd4 Tg3 (5...Th3 6.Kc5 f3 7.Sxb3=) 6.Ke4=] 2.Kxb4 Tf8 [2...Lxf1 3.Tf6 Th4 (3...Tb8+ 4.Ka3 Tc8 5.Txf4=) 4.Ka5 Lh3 a) 4...Kb8 5.Tf8+ Kc7 (5...Kb7 6.Txf4=) 6.Txf4=; b) 4...Th8 5.Txf4=; 5.Kb6 Kb8 (5...Th8 6.Txf4=; 5...Lc8 6.Tf8=) 6.Tf8+ Lc8 7.Tf7 Th6+ 8.Kc5=] 3.Sh2 Ka7 [3...f3 4.Sxf3=] 4.Te6 Ld1 [4...f3 5.Te3=] 5.Te1 Lh5 6.Te5=