[d]6k1/p1K3p1/5p2/5N2/3P4/3qP3/PP1B1R2/8 b - - 2 34
Black's perspective ♟
Endgame position
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Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Endgame position
White has clear advantage but can black hold ?
[d]6k1/p1K3p1/5p2/5N2/3P4/3qP3/PP1B1R2/8 b - - 2 34
Black's perspective ♟
[d]6k1/p1K3p1/5p2/5N2/3P4/3qP3/PP1B1R2/8 b - - 2 34
Black's perspective ♟
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mmt
- Posts: 343
- Joined: Sun Aug 25, 2019 8:33 am
- Full name: .
Re: Endgame position
SF dev with many 7-piece EGTBs doesn't see a way for black to save it:
58/109 107,025,285k -4.41 1. ... Qc4+ 2.Kd7 Qb5+ 3.Ke6 Qa6+ 4.Nd6 Qxa2+ 5.d5 Qxb2 6.Nc4 Qb8 7.Rf4 Qc8+ 8.Kd6 g5 9.Rd4 Kf8 10.Bb4 Kg7 11.Ba5 Kf8 12.Bc7 g4 13.Kc6 g3 14.d6 g2 15.d7 Qa8+ 16.Kd6 g1Q 17.d8Q+ Qxd8+ 18.Bxd8 Qg6 19.Ke6 Qf7+ 20.Kf5 Kg7 21.Rg4+ Kh7 22.Bxf6 Qh5+ 23.Rg5 Qh3+ 24.Ke5 Qc8 25.Kd4 Qd7+ 26.Rd5 Qa4 27.Ra5 Qd7+ 28.Kc3 Qb7 29.Rf5 Kg6 30.Rf4 Qc6 31.Kb4 Qb7+ 32.Ka5 Qc7+ 33.Ka6 Kh7 34.Kb5 Kg8 35.Rg4+ Kf8 36.Rh4 Qb8+ 37.Kc5 Kf7 38.Rf4 Qc8+ 39.Kd4 Qd7+ 40.Kc3 Qd1 41.Bd4+ Kg6 42.Kb4 Qb1+ 43.Kc5 Qb7 44.Ne5+ Kh5 45.Nc6 a5 46.Nxa5 Qa7+ 47.Kb4 Qb8+ 48.Kc3 Qb1 49.Nc4 Qe1+ 50.Kb3 Qb1+ 51.Ka4 Qb7 52.Bb6 Qd7+ 53.Kb4 Qe7+ 54.Kc3 Qd7 55.Bd4 Qb5
58/109 107,025,285k -4.41 1. ... Qc4+ 2.Kd7 Qb5+ 3.Ke6 Qa6+ 4.Nd6 Qxa2+ 5.d5 Qxb2 6.Nc4 Qb8 7.Rf4 Qc8+ 8.Kd6 g5 9.Rd4 Kf8 10.Bb4 Kg7 11.Ba5 Kf8 12.Bc7 g4 13.Kc6 g3 14.d6 g2 15.d7 Qa8+ 16.Kd6 g1Q 17.d8Q+ Qxd8+ 18.Bxd8 Qg6 19.Ke6 Qf7+ 20.Kf5 Kg7 21.Rg4+ Kh7 22.Bxf6 Qh5+ 23.Rg5 Qh3+ 24.Ke5 Qc8 25.Kd4 Qd7+ 26.Rd5 Qa4 27.Ra5 Qd7+ 28.Kc3 Qb7 29.Rf5 Kg6 30.Rf4 Qc6 31.Kb4 Qb7+ 32.Ka5 Qc7+ 33.Ka6 Kh7 34.Kb5 Kg8 35.Rg4+ Kf8 36.Rh4 Qb8+ 37.Kc5 Kf7 38.Rf4 Qc8+ 39.Kd4 Qd7+ 40.Kc3 Qd1 41.Bd4+ Kg6 42.Kb4 Qb1+ 43.Kc5 Qb7 44.Ne5+ Kh5 45.Nc6 a5 46.Nxa5 Qa7+ 47.Kb4 Qb8+ 48.Kc3 Qb1 49.Nc4 Qe1+ 50.Kb3 Qb1+ 51.Ka4 Qb7 52.Bb6 Qd7+ 53.Kb4 Qe7+ 54.Kc3 Qd7 55.Bd4 Qb5
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peter
- Posts: 3186
- Joined: Sat Feb 16, 2008 7:38 am
- Full name: Peter Martan
Re: Endgame position
But the way to win is a rather long one, isn't it? Won 7men is reached at 46th and then there's still 39 more to mate.mmt wrote: ↑Thu Dec 03, 2020 8:23 pm SF dev with many 7-piece EGTBs doesn't see a way for black to save it:
58/109 107,025,285k -4.41 1. ... Qc4+ 2.Kd7 Qb5+ 3.Ke6 Qa6+ 4.Nd6 Qxa2+ 5.d5 Qxb2 6.Nc4 Qb8 7.Rf4 Qc8+ 8.Kd6 g5 9.Rd4 Kf8 10.Bb4 Kg7 11.Ba5 Kf8 12.Bc7 g4 13.Kc6 g3 14.d6 g2 15.d7 Qa8+ 16.Kd6 g1Q 17.d8Q+ Qxd8+ 18.Bxd8 Qg6 19.Ke6 Qf7+ 20.Kf5 Kg7 21.Rg4+ Kh7 22.Bxf6 Qh5+ 23.Rg5 Qh3+ 24.Ke5 Qc8 25.Kd4 Qd7+ 26.Rd5 Qa4 27.Ra5 Qd7+ 28.Kc3 Qb7 29.Rf5 Kg6 30.Rf4 Qc6 31.Kb4 Qb7+ 32.Ka5 Qc7+ 33.Ka6 Kh7 34.Kb5 Kg8 35.Rg4+ Kf8 36.Rh4 Qb8+ 37.Kc5 Kf7 38.Rf4 Qc8+ 39.Kd4 Qd7+ 40.Kc3 Qd1 41.Bd4+ Kg6 42.Kb4 Qb1+ 43.Kc5 Qb7 44.Ne5+ Kh5 45.Nc6 a5 46.Nxa5 Qa7+ 47.Kb4 Qb8+ 48.Kc3 Qb1 49.Nc4 Qe1+ 50.Kb3 Qb1+ 51.Ka4 Qb7 52.Bb6 Qd7+ 53.Kb4 Qe7+ 54.Kc3 Qd7 55.Bd4 Qb5
Crystal with 6men has an eval about as high after some Forward- Backward, and way about as long, as it seems. Took a second one output of 34 more moves to mate.
6k1/p1K3p1/5p2/5N2/3P4/3qP3/PP1B1R2/8 b - - 0 1
Analysis by Crystal 271020:
34...Dc4+ 35.Kd7 Db5+ 36.Ke6 Dc4+ 37.d5 Dc8+ 38.Kd6 Db8+ 39.Kc5 Dxb2 40.Sd4 Db6+ 41.Kc4 Da6+ 42.Sb5 Dxa2+ 43.Kc5 Db2 44.Kc6 Dc2+ 45.Kd6 Dg6 46.Kc5 Dc2+ 47.Sc3 Dd3 48.e4 a6 49.Te2 g5 50.Kb4 Kf7 51.Le3 g4 52.Lc5 a5+ 53.Kb3 g3 54.d6 a4+ 55.Kb4 a3 56.Ta2 f5 57.Txa3 fxe4 58.Ta7+ Kf6 59.Te7 g2 60.Sxe4+ Kf5 61.d7 Kf4 62.Le3+ Kf3 63.Sd2+ Kg3 64.Sb3 Dd6+ 65.Lc5 Dd5 66.Tg7+ Kh2
+- (3.76) Tiefe: 38/97 00:59:54 33017MN, tb=91300780
Sorry for german abbrevations.
Seems it's just one more YAEEP (yet another endless endgame position) of Jon's regards
Peter.