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Up Topic The Rybka Lounge / Test Positions / 9 years ago - positions for the Rybka Cluster
- By MrKris (**) Date 2019-11-04 00:41
Topic: 10 beautiful testpositions! Rybka-Cluster challenge..
http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=19948
r3r2b/1bpq1k2/2n1pP2/1n1pP1p1/1p1P4/2PB4/PP1QNP1P/R4RK1 w - - 0 1

By Lukas Cimiotti  Date 2010-12-25 05:56
QUOTE: In position # 3 the cluster thinks there are better moves than Bg6+:

Analysis by Rybka Cluster 296 Cores:
1.Bxb5 Nxe5 2.dxe5 Qxb5 3.Nd4 Qd7 4.Qd3 Kf8 5.cxb4 Qf7 6.Rfc1 Rac8 7.a4 Qh5 8.a5 Qg4+
  +-  (1.60)   Depth: 15   00:00:03  20422kN
...
1.f4 bxc3 2.bxc3 Nxc3 3.Qxc3 Rg8 4.f5 Nd8 5.Bb5 c6 6.Qh3 Qe8 7.fxe6+ Qxe6 8.Qh5+ Kf8 9.Bd3 Nf7
  +-  (1.80)   Depth: 17   00:01:11  1150mN
...
1.Bxb5 Nxe5 2.dxe5 Qxb5 3.Nd4 Qc4 4.cxb4 c5 5.bxc5 Ra4 6.Rfd1 Bxf6 7.Qe3 Qxc5 8.Rac1 Rc4 9.Qf3 Qe7 10.exf6
  +-  (2.09)   Depth: 19   00:07:47  7858mN
1.f4 Nxc3 2.bxc3 Rg8 3.f5 Nd8 4.Qc2 Qa4 5.Qb1 exf5 6.Bxf5 Kf8 7.Bg4
  +-  (2.15)   Depth: 19   00:07:49  7898mN
<<<<<<<<<<<<< Stays with 1.f4 only after 07:49 <<<<<<<<<<<<<<<<<<<<<<<
... then all 1.f4:
1.f4 Nxc3 2.bxc3 Rg8 3.f5 Nd8 4.Qc2 Qa4 5.Qb1 Bc8 6.fxe6+ Bxe6 7.Bh7 Qe8 8.cxb4 Bh3
  +-  (2.95)   Depth: 23   01:57:55  125771mN 
END QUOTE
_ _ _

Latest Stockfish i7-4770K 8threads (4 cores)

Stockfish_19110221c0:
Found 510 tablebases
1/1  00:00   575  288k  +2.90  1.Qxg5 bxc3
...
22/39  00:01   12,500k  9,239k  +3.23  1.Bxb5 Nxe5 2.dxe5 Qxb5 3.Nd4 Qd7 4.Qd3 Bxf6 5.Qh7+ Bg7 6.f4 Ke7 7.f5 Kd8 8.fxe6 Rxe6 9.Qxg7 Re8 10.Qxd7+ Kxd7 11.e6+ Kd6 12.cxb4 c5 13.Nf5+ Kc7 14.Ng7 Re7 15.Rf7 Rxf7 16.exf7 Kd7 17.bxc5
23/46+  00:03   29,614k  9,211k  +3.23  1.f4
<<<<<<<<<<<<< Stays with 1.f4 after just 3 seconds,  00:03 !! <<<<<<<<<<<<<<<<<<<<<<<
23/46-  00:03   34,940k  9,190k  +2.99  1.f4 Nd6
23/46+  00:04   37,008k  9,192k  +3.20  1.f4
23/46+  00:04   40,924k  9,205k  +3.94  1.f4
23/46  00:04   42,478k  9,210k  +4.19  1.f4 Nd6 2.fxg5 Ne4 3.g6+ Kxg6 4.Ng3 Rg8 5.f7 Kh7 6.fxg8Q+ Kxg8 7.Nxe4 dxe4 8.Bxe4 Nd8 9.Qf4 Bg7 10.Bxb7 Nxb7 11.Qf3 Ra7 12.Qh5 Qe7 13.Qg6 bxc3 14.bxc3
24/35-  00:04   44,433k  9,215k  +4.07  1.f4 Nd6
24/40-  00:05   46,672k  9,209k  +3.94  1.f4 Nd6
24/44-  00:05   53,231k  9,217k  +3.52  1.f4 Nd6
24/45+  00:06   61,934k  9,243k  +3.71  1.f4
24/45+  00:07   64,767k  9,247k  +4.15  1.f4
24/45  00:07   65,908k  9,245k  +4.23  1.f4 Nd6 2.fxg5 Ne4 3.g6+ Kxg6 4.Qf4 Rg8 5.Kh1 Kf7 6.Qh4 Nxe5 7.dxe5 Bxf6 8.Nd4 Ke7 9.Rxf6 Nxf6 10.exf6+ Kd6 11.Re1 e5 12.Nf5+ Ke6 13.Ne7 d4+ 14.Be4 c5 15.Nxg8 Bxe4+ 16.Qxe4 Rxg8 17.Qxe5+ Kf7 18.Qh5+ Kxf6 19.Qh6+ Kf7
25/51-  00:07   68,323k  9,255k  +4.10  1.f4 Nd6
25/51-  00:07   68,505k  9,254k  +3.97  1.f4 Nd6
25/51-  00:08   75,548k  9,250k  +3.18  1.f4 Nd6
25/51+  00:08   82,609k  9,250k  +3.45  1.f4
25/51+  00:09   84,366k  9,249k  +4.04  1.f4
25/51  00:09   88,976k  9,254k  +4.28  1.f4 Nd6 2.fxg5 Ne4 3.g6+ Kxg6 4.Ng3 Rg8 5.Bxe4+ dxe4 6.Qe2 Kf7 7.Qh5+ Kf8 8.Qh6+ Ke8 9.f7+ Qxf7 10.Rxf7 Kxf7 11.Rf1+ Ke7 12.Qh4+ Ke8 13.Qh7 Ne7 14.Rf7 Rg7 15.Rxg7 Bxg7 16.Qxg7 bxc3 17.bxc3 Rxa2 18.Nh5 Nd5 19.Nf6+ Nxf6
26/40+  00:11   102,677k  9,264k  +4.41  1.f4
26/47-  00:11   104,492k  9,264k  +4.15  1.f4 Nd6
26/47+  00:12   111,907k  9,268k  +4.35  1.f4
26/48  00:12   114,633k  9,268k  +4.24  1.f4 Nd6 2.exd6 Rg8 3.fxg5 Rxg5+ 4.Qxg5 Rg8 5.Qxg8+ Kxg8 6.f7+ Kf8 7.Nf4 Kxf7 8.Nxe6+ Kxe6 9.Bf5+ Kxd6 10.Bxd7 bxc3 11.bxc3 Nxd4 12.Bg4 Nb5 13.Rf7 Bxc3 14.Rc1 Bd4+ 15.Kg2 Bc6 16.a4 Na3 17.a5 Bb2 18.Re1 Nb5 19.Re6+ Kc5 20.Kh3 d4 21.Bf3 Bxf3 22.Rxf3 Kb4
27/55+  00:13   121,148k  9,269k  +4.37  1.f4
27/55+  00:13   121,974k  9,268k  +4.50  1.f4
27/55  00:14   136,717k  9,265k  +4.30  1.f4 bxc3 2.bxc3 Rg8 3.Bxb5 Ra5 4.Qd3 Ke8 5.fxg5 Rxg5+ 6.Kh1 Qf7 7.Nf4 Kd7 8.a4 Kc8 9.Qh3 Nxe5 10.Qxh8+ Rg8 11.Qh3 Ng4 12.Rae1 Ba6 13.Rxe6 Bxb5 14.axb5 Rxb5 15.Re7 Qxf6 16.Nxd5 Qg5
28/49+  00:17   159,808k  9,270k  +4.43  1.f4
28/50+  00:17   162,076k  9,269k  +4.56  1.f4
28/50+  00:18   171,311k  9,278k  +4.75  1.f4
28/50  00:19   179,381k  9,290k  +4.94  1.f4 Nd6 2.exd6 Rg8 3.fxg5 Rxg5+ 4.Qxg5 Rg8 5.Qxg8+ Kxg8 6.f7+ Kf8 7.Nf4 Kxf7 8.Nxe6+ Kxe6 9.Bf5+ Kxd6 10.Bxd7 Nxd4 11.Rf8 bxc3 12.Rxh8 cxb2 13.Rb1 Kxd7 14.Rxb2 Ba6 15.h4 Bd3 16.Kf2 Ne6 17.h5 Bf5 18.h6 d4 19.h7
29/53-  00:20   190,504k  9,299k  +4.80  1.f4 Nd6
29/53  00:22   211,113k  9,301k  +4.80  1.f4 Nd6
Up Topic The Rybka Lounge / Test Positions / 9 years ago - positions for the Rybka Cluster

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