Some test positions

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King Solomon
Posts: 7
Joined: Thu Aug 31, 2017 1:26 am

Some test positions

Post by King Solomon »

Tested a few engines on these a while back, they seemed hard to crack. Interested to see if things have changed. I think the given moves are unique best but could be wrong.

Enjoy!

Code: Select all

2r1r1k1/1p4pp/pP1b4/2pP1p1b/2P1pP2/2B3PP/1P3KB1/R3R3 w - - bm g4
r1br2k1/1p4p1/p1nBp1n1/q5PB/4Np2/2P1Q3/3R4/4K1R1 w - - bm Nf6+
r1q1rbk1/2pp1ppp/p1b5/3NP3/3Q4/1P1R2B1/P4PPP/R5K1 w - - bm Nf6+
1rb1qrk1/6pp/2n1pn2/3pN1P1/2pP1P2/b1p1B3/P3QN1P/1BR2RK1 w - - bm Rxc3
r1b2rk1/pp4pp/2n1p1p1/3pP1B1/q1pP1PQ1/P1P5/2P1N1PP/R4RK1 w - - bm f5
rnbqk2r/p4p2/2p1p3/1p2N1pp/PbpPn2P/2N1P1B1/1P3PP1/R2QKB1R w KQkq - - bm Qf3
r1bq1rk1/1p2b2p/2p1pppQ/p7/1n1PN2P/3B1N2/PPPR1PP1/2K4R w - - bm Neg5
2r2bk1/pNq3p1/2Pp3p/1p1Prp2/1P2p1P1/6Q1/P4P1P/2RR2K1 w - - bm Qxe5
k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4
8/2p2kb1/np1p2p1/pN1Pp1Pp/2P1P2P/1P6/P4BK1/8 w - - bm Nxc7
2r1r1k1/4bppp/1q4n1/3pP3/p1pP4/PnR2NBP/1P4P1/1B1QR2K w - - bm e6
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+
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User avatar
MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: Some test positions

Post by MikeB »

King Solomon wrote:Tested a few engines on these a while back, they seemed hard to crack. Interested to see if things have changed. I think the given moves are unique best but could be wrong.

Enjoy!

Code: Select all

2r1r1k1/1p4pp/pP1b4/2pP1p1b/2P1pP2/2B3PP/1P3KB1/R3R3 w - - bm g4
r1br2k1/1p4p1/p1nBp1n1/q5PB/4Np2/2P1Q3/3R4/4K1R1 w - - bm Nf6+
r1q1rbk1/2pp1ppp/p1b5/3NP3/3Q4/1P1R2B1/P4PPP/R5K1 w - - bm Nf6+
1rb1qrk1/6pp/2n1pn2/3pN1P1/2pP1P2/b1p1B3/P3QN1P/1BR2RK1 w - - bm Rxc3
r1b2rk1/pp4pp/2n1p1p1/3pP1B1/q1pP1PQ1/P1P5/2P1N1PP/R4RK1 w - - bm f5
rnbqk2r/p4p2/2p1p3/1p2N1pp/PbpPn2P/2N1P1B1/1P3PP1/R2QKB1R w KQkq - - bm Qf3
r1bq1rk1/1p2b2p/2p1pppQ/p7/1n1PN2P/3B1N2/PPPR1PP1/2K4R w - - bm Neg5
2r2bk1/pNq3p1/2Pp3p/1p1Prp2/1P2p1P1/6Q1/P4P1P/2RR2K1 w - - bm Qxe5
k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4
8/2p2kb1/np1p2p1/pN1Pp1Pp/2P1P2P/1P6/P4BK1/8 w - - bm Nxc7
2r1r1k1/4bppp/1q4n1/3pP3/p1pP4/PnR2NBP/1P4P1/1B1QR2K w - - bm e6
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+
[d]k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4

we can discard this one:

Code: Select all

 39	 -132.64 	8.16G	4:06.84	Kb7 Kb2 Kb6 Ne6 c5 Kc3 Rf7 Kd3 Rxf5 Nxg7 Rf4 h5 Ka5 Ne6 Rf5 Ng7 Rf7 Ne6 Kb4 Ke4 Kxc4 Ng5 Rf6 Nh3 Kb3 Ke5 Rf8 Nf4 c4 Ne6 Rh8 Nd4+ Kc3 Nb5+ Kd3 Kd5 Rxh5+ Kc6 c3 Na3 c2 Nxc2 
 39	 -132.62 	8.16G	4:06.99	Re4 Ne6 g6 fxg6 Rxe6 h5 Re2+ Kb3 Rg2 Kc3 Kb8 Kd3 Kc7 Ke4 Kd7 Kf3 Rg1 Kf2 Rg5 h4 Rf5+ Kg3 Ke6 Kg4 Rf2 h6 Rg2+ Kh5 Kf6 h7 Kg7 c5 Rg1 h8=Q+ Kxh8 Kh6 Rc1 g7+ Kg8 h5 Rxc5 Kg6 Rc1 Kf6 c5 Ke5 Kxg7 Kd5 c4 Ke5 c3 Kd5 c2 Kc6 Rd1 Kb7 c1 
 39	 -132.62 	8.16G	4:06.96	Ka7 Ne6 g6 fxg6 Rxe6 h5 Re2+ Kb3 Rg2 Kc3 Kb8 Kd3 Kc7 Ke4 Kd7 Kf3 Rg1 Kf2 Rg5 h4 Rf5+ Kg3 Ke6 Kg4 Rf2 h6 Rg2+ Kh5 Kf6 h7 Kg7 c5 Rg1 h8=Q+ Kxh8 Kh6 Rc1 g7+ Kg8 h5 Rxc5 Kg6 Rc1 Kf6 c5 Ke5 Kxg7 Kd5 c4 Ke5 c3 Kd5 c2 Kc6 Rd1 Kb7 c1 
 39	 -132.59 	8.17G	4:07.14	Re5 Nh5 Rxf5 Nxg7 Rf6 Kb3 Ka7 Kc3 Kb6 h5 Kc5 Kd3 Rf7 Ne6+ Kb4 Kd4 Rf5 Ng7 c5+ Ke4 Rf8 Ne6 Rf7 Nf4 Kxc4 Kf3 Kd4 Kg4 c4 h6 Rd7 Ng2 c3 Ne1 Ke3 Nc2+ Kd3 Na1 Ra7 Nb3 c2 Nc1+ Kd2 Nb3+ Kd1 Kf5 Rb7 h7 Rxb3 h8=Q 
 39	 -132.59 	8.16G	4:07.03	Rf7 Ne6 Rxf5 Nxg7 Rf6 Kb3 Ka7 Kc3 Kb6 h5 Kc5 Kd3 Rf7 Ne6+ Kb4 Kd4 Rf5 Ng7 c5+ Ke4 Rf8 Ne6 Rf7 Nf4 Kxc4 Kf3 Kd4 Kg4 c4 h6 Rd7 Ng2 c3 Ne1 Ke3 Nc2+ Kd3 Na1 Ra7 Nb3 c2 Nc1+ Kd2 Nb3+ Kd1 Kf5 Rb7 h7 Rxb3 h8=Q 
 39	 -132.55 	8.57G	4:19.33	Kb8 Kb3 Rf7 Nh5 Kc7 c5 Kd7 Ng3 Ke7 Kc4 Kf6 Ne2 Ke5 Nd4 Rf6 Kd3 Rh6 Ke3 Kd5 Nf3 Kxc5 Kf4 Kb4 Ne5 c5 Nd3+ Kb5 Kg3 c4 Ne1 Kb4 Nf3 c3 Nd4 Kc4 Nc2 Kb3 Nd4+ Kb2 Ne6 c2 Nc5 Kc3 Ne4+ Kc4 Nd2+ Kb4 Nf3 c1=Q Kg2 Rxh4 Nxh4 Qg5+ Kh3 Qf4 f 
 39	 -17.97 	8.92G	4:30.37	c5 Kb3 Kb7 Kc2 Rf7 Kd3 Rxf5 Ke4 Rf6 h5 Kc6 Ke5 Rh6 h3 Kd7 Kd5 Rf6 Ke5 Rd6 Nd5 Re6+ Kf4 Re1 Ne3 Ke6 h4 Re2 Nd5 Rc2 Ne3 Rc1 Kg5 Rh1 Ng4 Rg1 Kf4 Rf1+ Kg5 Rf5+ Kg6 Rf4 Kg5 Rd4 Ne3 Re4 Nf1 Ke5 Nh2 Rxc4 Nf3+ Kd5 Nd2 Rc1 Kg4 Rg1+ Kh3 
 39	  0.00 	9.25G	4:40.92	Re8 Ne6 Rh8 Nxg7 Rxh4 Kb3 Kb7 Ne6 Rh6 Nc5+ Kb6 Ne6 Rxh2 f6 Rf2 f7 Rf3+ Kb4 Rxf7 
 39	  0.00 	9.24G	4:40.58	Rd7 Ne6 Kb8 Kb3 Rf7 h5 Rxf5 Nxg7 Rf3+ Kb4 Rh3 Kc5 Kc7 Ne6+ Kd7 Nf8+ Ke7 Ng6+ Kf6 Kxc6 Kg5 Kd6 Rxh5 
 39	  0.00 	9.21G	4:39.62	Rc7 Ne6 Rb7 h5 Ra7+ Kb3 Rb7+ Kc3 Rd7 Nc5 Rd6 Ne6 Rd7 
 39	  0.00 	9.15G	4:37.62	Re1 h5 Rf1 Ne6 Rxf5 Nxg7 Rf2+ Kb3 Rxh2 h6 Kb7 h7 Rh3+ Kb4 Rxh7 
 39	  0.00 	9.09G	4:35.78	Re3 h5 Kb7 Ne6 Rh3 Nxg7 Kc7 f6 Rxh2+ Kb3 Kd6 h6 Rh3+ Kb4 c5+ Kb5 Rh2 f7 Ke7 Kxc5 Kxf7 
 39	  0.00 	9.02G	4:33.52	Ra7+ Kb3 Rf7 Ne6 Rxf5 Nxg7 Rf7 Ne6 Rf6 Nd4 c5 Ne2 Rf3+ Ka4 Rf2 Nc3 Rxh2 Kb5 Rh3 Ne4 Rxh4 
 39	  0.00 	8.94G	4:31.17	Rb7 Ne6 Kb8 h5 Kc8 Ka3 Rf7 Kb4 c5+ Nxc5 Rxf5 Ne6 Rxh5 Nxg7 
 39	  #19 	9.28G	4:41.78	g5 fxg6 Kb7 h5 Re4 g7 Rxc4 h6 Rxf4 h7 Rf2+ Kb3 Rf3+ Kc4 Rf4+ Kd3 Rf3+ Ke4 Ra3 g8=Q Ra4+ Ke5 Rh4 h8=Q Rxh8 Qxh8 Kc7 Qg7+ Kb6 Kd6 Kb5 Qc3 c5 Qb3+ Ka6 Kc6 Ka5 Qa3# 
 39	  #19 	9.26G	4:41.17	g6 fxg6 Kb7 h5 Re4 g7 Rxc4 h6 Rxf4 h7 Rf2+ Kb3 Rf3+ Kc4 Rf4+ Kd3 Rf3+ Ke4 Ra3 g8=Q Ra4+ Ke5 Rh4 h8=Q Rxh8 Qxh8 Kc7 Qg7+ Kb6 Kd6 Kb5 Qc3 c5 Qb3+ Ka6 Kc6 Ka5 Qa3# 
 39	  #14 	9.38G	4:44.81	Re2+ Nxe2 Kb7 f6 gxf6 h5 Kc8 h6 Kd7 h7 Kd6 h8=Q Ke5 Kb3 Ke6 Qe8+ Kd6 Nd4 f5 Qxc6+ Ke5 Kc3 Kf4 Qf6 Ke3 Qh4 f4 Qe1# 
 39	    #9 	9.39G	4:45.02	Re6 fxe6 Kb7 e7 Kc7 e8=Q Kd6 Qe6+ Kc5 Kb3 Kb6 Qe7 g6 Ne6 Ka6 Qc7 c5 Nxc5#
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Dann Corbit
Posts: 12791
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Some test positions

Post by Dann Corbit »

MikeB wrote:
King Solomon wrote:Tested a few engines on these a while back, they seemed hard to crack. Interested to see if things have changed. I think the given moves are unique best but could be wrong.

Enjoy!

Code: Select all

2r1r1k1/1p4pp/pP1b4/2pP1p1b/2P1pP2/2B3PP/1P3KB1/R3R3 w - - bm g4
r1br2k1/1p4p1/p1nBp1n1/q5PB/4Np2/2P1Q3/3R4/4K1R1 w - - bm Nf6+
r1q1rbk1/2pp1ppp/p1b5/3NP3/3Q4/1P1R2B1/P4PPP/R5K1 w - - bm Nf6+
1rb1qrk1/6pp/2n1pn2/3pN1P1/2pP1P2/b1p1B3/P3QN1P/1BR2RK1 w - - bm Rxc3
r1b2rk1/pp4pp/2n1p1p1/3pP1B1/q1pP1PQ1/P1P5/2P1N1PP/R4RK1 w - - bm f5
rnbqk2r/p4p2/2p1p3/1p2N1pp/PbpPn2P/2N1P1B1/1P3PP1/R2QKB1R w KQkq - - bm Qf3
r1bq1rk1/1p2b2p/2p1pppQ/p7/1n1PN2P/3B1N2/PPPR1PP1/2K4R w - - bm Neg5
2r2bk1/pNq3p1/2Pp3p/1p1Prp2/1P2p1P1/6Q1/P4P1P/2RR2K1 w - - bm Qxe5
k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4
8/2p2kb1/np1p2p1/pN1Pp1Pp/2P1P2P/1P6/P4BK1/8 w - - bm Nxc7
2r1r1k1/4bppp/1q4n1/3pP3/p1pP4/PnR2NBP/1P4P1/1B1QR2K w - - bm e6
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+
[d]k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4

we can discard this one:

Code: Select all

 39	 -132.64 	8.16G	4:06.84	Kb7 Kb2 Kb6 Ne6 c5 Kc3 Rf7 Kd3 Rxf5 Nxg7 Rf4 h5 Ka5 Ne6 Rf5 Ng7 Rf7 Ne6 Kb4 Ke4 Kxc4 Ng5 Rf6 Nh3 Kb3 Ke5 Rf8 Nf4 c4 Ne6 Rh8 Nd4+ Kc3 Nb5+ Kd3 Kd5 Rxh5+ Kc6 c3 Na3 c2 Nxc2 
 39	 -132.62 	8.16G	4:06.99	Re4 Ne6 g6 fxg6 Rxe6 h5 Re2+ Kb3 Rg2 Kc3 Kb8 Kd3 Kc7 Ke4 Kd7 Kf3 Rg1 Kf2 Rg5 h4 Rf5+ Kg3 Ke6 Kg4 Rf2 h6 Rg2+ Kh5 Kf6 h7 Kg7 c5 Rg1 h8=Q+ Kxh8 Kh6 Rc1 g7+ Kg8 h5 Rxc5 Kg6 Rc1 Kf6 c5 Ke5 Kxg7 Kd5 c4 Ke5 c3 Kd5 c2 Kc6 Rd1 Kb7 c1 
 39	 -132.62 	8.16G	4:06.96	Ka7 Ne6 g6 fxg6 Rxe6 h5 Re2+ Kb3 Rg2 Kc3 Kb8 Kd3 Kc7 Ke4 Kd7 Kf3 Rg1 Kf2 Rg5 h4 Rf5+ Kg3 Ke6 Kg4 Rf2 h6 Rg2+ Kh5 Kf6 h7 Kg7 c5 Rg1 h8=Q+ Kxh8 Kh6 Rc1 g7+ Kg8 h5 Rxc5 Kg6 Rc1 Kf6 c5 Ke5 Kxg7 Kd5 c4 Ke5 c3 Kd5 c2 Kc6 Rd1 Kb7 c1 
 39	 -132.59 	8.17G	4:07.14	Re5 Nh5 Rxf5 Nxg7 Rf6 Kb3 Ka7 Kc3 Kb6 h5 Kc5 Kd3 Rf7 Ne6+ Kb4 Kd4 Rf5 Ng7 c5+ Ke4 Rf8 Ne6 Rf7 Nf4 Kxc4 Kf3 Kd4 Kg4 c4 h6 Rd7 Ng2 c3 Ne1 Ke3 Nc2+ Kd3 Na1 Ra7 Nb3 c2 Nc1+ Kd2 Nb3+ Kd1 Kf5 Rb7 h7 Rxb3 h8=Q 
 39	 -132.59 	8.16G	4:07.03	Rf7 Ne6 Rxf5 Nxg7 Rf6 Kb3 Ka7 Kc3 Kb6 h5 Kc5 Kd3 Rf7 Ne6+ Kb4 Kd4 Rf5 Ng7 c5+ Ke4 Rf8 Ne6 Rf7 Nf4 Kxc4 Kf3 Kd4 Kg4 c4 h6 Rd7 Ng2 c3 Ne1 Ke3 Nc2+ Kd3 Na1 Ra7 Nb3 c2 Nc1+ Kd2 Nb3+ Kd1 Kf5 Rb7 h7 Rxb3 h8=Q 
 39	 -132.55 	8.57G	4:19.33	Kb8 Kb3 Rf7 Nh5 Kc7 c5 Kd7 Ng3 Ke7 Kc4 Kf6 Ne2 Ke5 Nd4 Rf6 Kd3 Rh6 Ke3 Kd5 Nf3 Kxc5 Kf4 Kb4 Ne5 c5 Nd3+ Kb5 Kg3 c4 Ne1 Kb4 Nf3 c3 Nd4 Kc4 Nc2 Kb3 Nd4+ Kb2 Ne6 c2 Nc5 Kc3 Ne4+ Kc4 Nd2+ Kb4 Nf3 c1=Q Kg2 Rxh4 Nxh4 Qg5+ Kh3 Qf4 f 
 39	 -17.97 	8.92G	4:30.37	c5 Kb3 Kb7 Kc2 Rf7 Kd3 Rxf5 Ke4 Rf6 h5 Kc6 Ke5 Rh6 h3 Kd7 Kd5 Rf6 Ke5 Rd6 Nd5 Re6+ Kf4 Re1 Ne3 Ke6 h4 Re2 Nd5 Rc2 Ne3 Rc1 Kg5 Rh1 Ng4 Rg1 Kf4 Rf1+ Kg5 Rf5+ Kg6 Rf4 Kg5 Rd4 Ne3 Re4 Nf1 Ke5 Nh2 Rxc4 Nf3+ Kd5 Nd2 Rc1 Kg4 Rg1+ Kh3 
 39	  0.00 	9.25G	4:40.92	Re8 Ne6 Rh8 Nxg7 Rxh4 Kb3 Kb7 Ne6 Rh6 Nc5+ Kb6 Ne6 Rxh2 f6 Rf2 f7 Rf3+ Kb4 Rxf7 
 39	  0.00 	9.24G	4:40.58	Rd7 Ne6 Kb8 Kb3 Rf7 h5 Rxf5 Nxg7 Rf3+ Kb4 Rh3 Kc5 Kc7 Ne6+ Kd7 Nf8+ Ke7 Ng6+ Kf6 Kxc6 Kg5 Kd6 Rxh5 
 39	  0.00 	9.21G	4:39.62	Rc7 Ne6 Rb7 h5 Ra7+ Kb3 Rb7+ Kc3 Rd7 Nc5 Rd6 Ne6 Rd7 
 39	  0.00 	9.15G	4:37.62	Re1 h5 Rf1 Ne6 Rxf5 Nxg7 Rf2+ Kb3 Rxh2 h6 Kb7 h7 Rh3+ Kb4 Rxh7 
 39	  0.00 	9.09G	4:35.78	Re3 h5 Kb7 Ne6 Rh3 Nxg7 Kc7 f6 Rxh2+ Kb3 Kd6 h6 Rh3+ Kb4 c5+ Kb5 Rh2 f7 Ke7 Kxc5 Kxf7 
 39	  0.00 	9.02G	4:33.52	Ra7+ Kb3 Rf7 Ne6 Rxf5 Nxg7 Rf7 Ne6 Rf6 Nd4 c5 Ne2 Rf3+ Ka4 Rf2 Nc3 Rxh2 Kb5 Rh3 Ne4 Rxh4 
 39	  0.00 	8.94G	4:31.17	Rb7 Ne6 Kb8 h5 Kc8 Ka3 Rf7 Kb4 c5+ Nxc5 Rxf5 Ne6 Rxh5 Nxg7 
 39	  #19 	9.28G	4:41.78	g5 fxg6 Kb7 h5 Re4 g7 Rxc4 h6 Rxf4 h7 Rf2+ Kb3 Rf3+ Kc4 Rf4+ Kd3 Rf3+ Ke4 Ra3 g8=Q Ra4+ Ke5 Rh4 h8=Q Rxh8 Qxh8 Kc7 Qg7+ Kb6 Kd6 Kb5 Qc3 c5 Qb3+ Ka6 Kc6 Ka5 Qa3# 
 39	  #19 	9.26G	4:41.17	g6 fxg6 Kb7 h5 Re4 g7 Rxc4 h6 Rxf4 h7 Rf2+ Kb3 Rf3+ Kc4 Rf4+ Kd3 Rf3+ Ke4 Ra3 g8=Q Ra4+ Ke5 Rh4 h8=Q Rxh8 Qxh8 Kc7 Qg7+ Kb6 Kd6 Kb5 Qc3 c5 Qb3+ Ka6 Kc6 Ka5 Qa3# 
 39	  #14 	9.38G	4:44.81	Re2+ Nxe2 Kb7 f6 gxf6 h5 Kc8 h6 Kd7 h7 Kd6 h8=Q Ke5 Kb3 Ke6 Qe8+ Kd6 Nd4 f5 Qxc6+ Ke5 Kc3 Kf4 Qf6 Ke3 Qh4 f4 Qe1# 
 39	    #9 	9.39G	4:45.02	Re6 fxe6 Kb7 e7 Kc7 e8=Q Kd6 Qe6+ Kc5 Kb3 Kb6 Qe7 g6 Ne6 Ka6 Qc7 c5 Nxc5#
Something strange here. Chest319 in brute force mode did not find a mate in 10 or less. It will find a mate for or against in the ply range of the flag -z.

chest319 -b -M 1000 -z11 Q:\dm9b.epd > d-ch.epd

d-ch.epd is empty.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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User avatar
MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: Some test positions

Post by MikeB »

Dann Corbit wrote:
MikeB wrote:
King Solomon wrote:Tested a few engines on these a while back, they seemed hard to crack. Interested to see if things have changed. I think the given moves are unique best but could be wrong.

Enjoy!

Code: Select all

2r1r1k1/1p4pp/pP1b4/2pP1p1b/2P1pP2/2B3PP/1P3KB1/R3R3 w - - bm g4
r1br2k1/1p4p1/p1nBp1n1/q5PB/4Np2/2P1Q3/3R4/4K1R1 w - - bm Nf6+
r1q1rbk1/2pp1ppp/p1b5/3NP3/3Q4/1P1R2B1/P4PPP/R5K1 w - - bm Nf6+
1rb1qrk1/6pp/2n1pn2/3pN1P1/2pP1P2/b1p1B3/P3QN1P/1BR2RK1 w - - bm Rxc3
r1b2rk1/pp4pp/2n1p1p1/3pP1B1/q1pP1PQ1/P1P5/2P1N1PP/R4RK1 w - - bm f5
rnbqk2r/p4p2/2p1p3/1p2N1pp/PbpPn2P/2N1P1B1/1P3PP1/R2QKB1R w KQkq - - bm Qf3
r1bq1rk1/1p2b2p/2p1pppQ/p7/1n1PN2P/3B1N2/PPPR1PP1/2K4R w - - bm Neg5
2r2bk1/pNq3p1/2Pp3p/1p1Prp2/1P2p1P1/6Q1/P4P1P/2RR2K1 w - - bm Qxe5
k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4
8/2p2kb1/np1p2p1/pN1Pp1Pp/2P1P2P/1P6/P4BK1/8 w - - bm Nxc7
2r1r1k1/4bppp/1q4n1/3pP3/p1pP4/PnR2NBP/1P4P1/1B1QR2K w - - bm e6
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+
[d]k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4

we can discard this one:

Code: Select all

 39	 -132.64 	8.16G	4:06.84	Kb7 Kb2 Kb6 Ne6 c5 Kc3 Rf7 Kd3 Rxf5 Nxg7 Rf4 h5 Ka5 Ne6 Rf5 Ng7 Rf7 Ne6 Kb4 Ke4 Kxc4 Ng5 Rf6 Nh3 Kb3 Ke5 Rf8 Nf4 c4 Ne6 Rh8 Nd4+ Kc3 Nb5+ Kd3 Kd5 Rxh5+ Kc6 c3 Na3 c2 Nxc2 
 39	 -132.62 	8.16G	4:06.99	Re4 Ne6 g6 fxg6 Rxe6 h5 Re2+ Kb3 Rg2 Kc3 Kb8 Kd3 Kc7 Ke4 Kd7 Kf3 Rg1 Kf2 Rg5 h4 Rf5+ Kg3 Ke6 Kg4 Rf2 h6 Rg2+ Kh5 Kf6 h7 Kg7 c5 Rg1 h8=Q+ Kxh8 Kh6 Rc1 g7+ Kg8 h5 Rxc5 Kg6 Rc1 Kf6 c5 Ke5 Kxg7 Kd5 c4 Ke5 c3 Kd5 c2 Kc6 Rd1 Kb7 c1 
 39	 -132.62 	8.16G	4:06.96	Ka7 Ne6 g6 fxg6 Rxe6 h5 Re2+ Kb3 Rg2 Kc3 Kb8 Kd3 Kc7 Ke4 Kd7 Kf3 Rg1 Kf2 Rg5 h4 Rf5+ Kg3 Ke6 Kg4 Rf2 h6 Rg2+ Kh5 Kf6 h7 Kg7 c5 Rg1 h8=Q+ Kxh8 Kh6 Rc1 g7+ Kg8 h5 Rxc5 Kg6 Rc1 Kf6 c5 Ke5 Kxg7 Kd5 c4 Ke5 c3 Kd5 c2 Kc6 Rd1 Kb7 c1 
 39	 -132.59 	8.17G	4:07.14	Re5 Nh5 Rxf5 Nxg7 Rf6 Kb3 Ka7 Kc3 Kb6 h5 Kc5 Kd3 Rf7 Ne6+ Kb4 Kd4 Rf5 Ng7 c5+ Ke4 Rf8 Ne6 Rf7 Nf4 Kxc4 Kf3 Kd4 Kg4 c4 h6 Rd7 Ng2 c3 Ne1 Ke3 Nc2+ Kd3 Na1 Ra7 Nb3 c2 Nc1+ Kd2 Nb3+ Kd1 Kf5 Rb7 h7 Rxb3 h8=Q 
 39	 -132.59 	8.16G	4:07.03	Rf7 Ne6 Rxf5 Nxg7 Rf6 Kb3 Ka7 Kc3 Kb6 h5 Kc5 Kd3 Rf7 Ne6+ Kb4 Kd4 Rf5 Ng7 c5+ Ke4 Rf8 Ne6 Rf7 Nf4 Kxc4 Kf3 Kd4 Kg4 c4 h6 Rd7 Ng2 c3 Ne1 Ke3 Nc2+ Kd3 Na1 Ra7 Nb3 c2 Nc1+ Kd2 Nb3+ Kd1 Kf5 Rb7 h7 Rxb3 h8=Q 
 39	 -132.55 	8.57G	4:19.33	Kb8 Kb3 Rf7 Nh5 Kc7 c5 Kd7 Ng3 Ke7 Kc4 Kf6 Ne2 Ke5 Nd4 Rf6 Kd3 Rh6 Ke3 Kd5 Nf3 Kxc5 Kf4 Kb4 Ne5 c5 Nd3+ Kb5 Kg3 c4 Ne1 Kb4 Nf3 c3 Nd4 Kc4 Nc2 Kb3 Nd4+ Kb2 Ne6 c2 Nc5 Kc3 Ne4+ Kc4 Nd2+ Kb4 Nf3 c1=Q Kg2 Rxh4 Nxh4 Qg5+ Kh3 Qf4 f 
 39	 -17.97 	8.92G	4:30.37	c5 Kb3 Kb7 Kc2 Rf7 Kd3 Rxf5 Ke4 Rf6 h5 Kc6 Ke5 Rh6 h3 Kd7 Kd5 Rf6 Ke5 Rd6 Nd5 Re6+ Kf4 Re1 Ne3 Ke6 h4 Re2 Nd5 Rc2 Ne3 Rc1 Kg5 Rh1 Ng4 Rg1 Kf4 Rf1+ Kg5 Rf5+ Kg6 Rf4 Kg5 Rd4 Ne3 Re4 Nf1 Ke5 Nh2 Rxc4 Nf3+ Kd5 Nd2 Rc1 Kg4 Rg1+ Kh3 
 39	  0.00 	9.25G	4:40.92	Re8 Ne6 Rh8 Nxg7 Rxh4 Kb3 Kb7 Ne6 Rh6 Nc5+ Kb6 Ne6 Rxh2 f6 Rf2 f7 Rf3+ Kb4 Rxf7 
 39	  0.00 	9.24G	4:40.58	Rd7 Ne6 Kb8 Kb3 Rf7 h5 Rxf5 Nxg7 Rf3+ Kb4 Rh3 Kc5 Kc7 Ne6+ Kd7 Nf8+ Ke7 Ng6+ Kf6 Kxc6 Kg5 Kd6 Rxh5 
 39	  0.00 	9.21G	4:39.62	Rc7 Ne6 Rb7 h5 Ra7+ Kb3 Rb7+ Kc3 Rd7 Nc5 Rd6 Ne6 Rd7 
 39	  0.00 	9.15G	4:37.62	Re1 h5 Rf1 Ne6 Rxf5 Nxg7 Rf2+ Kb3 Rxh2 h6 Kb7 h7 Rh3+ Kb4 Rxh7 
 39	  0.00 	9.09G	4:35.78	Re3 h5 Kb7 Ne6 Rh3 Nxg7 Kc7 f6 Rxh2+ Kb3 Kd6 h6 Rh3+ Kb4 c5+ Kb5 Rh2 f7 Ke7 Kxc5 Kxf7 
 39	  0.00 	9.02G	4:33.52	Ra7+ Kb3 Rf7 Ne6 Rxf5 Nxg7 Rf7 Ne6 Rf6 Nd4 c5 Ne2 Rf3+ Ka4 Rf2 Nc3 Rxh2 Kb5 Rh3 Ne4 Rxh4 
 39	  0.00 	8.94G	4:31.17	Rb7 Ne6 Kb8 h5 Kc8 Ka3 Rf7 Kb4 c5+ Nxc5 Rxf5 Ne6 Rxh5 Nxg7 
 39	  #19 	9.28G	4:41.78	g5 fxg6 Kb7 h5 Re4 g7 Rxc4 h6 Rxf4 h7 Rf2+ Kb3 Rf3+ Kc4 Rf4+ Kd3 Rf3+ Ke4 Ra3 g8=Q Ra4+ Ke5 Rh4 h8=Q Rxh8 Qxh8 Kc7 Qg7+ Kb6 Kd6 Kb5 Qc3 c5 Qb3+ Ka6 Kc6 Ka5 Qa3# 
 39	  #19 	9.26G	4:41.17	g6 fxg6 Kb7 h5 Re4 g7 Rxc4 h6 Rxf4 h7 Rf2+ Kb3 Rf3+ Kc4 Rf4+ Kd3 Rf3+ Ke4 Ra3 g8=Q Ra4+ Ke5 Rh4 h8=Q Rxh8 Qxh8 Kc7 Qg7+ Kb6 Kd6 Kb5 Qc3 c5 Qb3+ Ka6 Kc6 Ka5 Qa3# 
 39	  #14 	9.38G	4:44.81	Re2+ Nxe2 Kb7 f6 gxf6 h5 Kc8 h6 Kd7 h7 Kd6 h8=Q Ke5 Kb3 Ke6 Qe8+ Kd6 Nd4 f5 Qxc6+ Ke5 Kc3 Kf4 Qf6 Ke3 Qh4 f4 Qe1# 
 39	    #9 	9.39G	4:45.02	Re6 fxe6 Kb7 e7 Kc7 e8=Q Kd6 Qe6+ Kc5 Kb3 Kb6 Qe7 g6 Ne6 Ka6 Qc7 c5 Nxc5#
Something strange here. Chest319 in brute force mode did not find a mate in 10 or less. It will find a mate for or against in the ply range of the flag -z.

chest319 -b -M 1000 -z11 Q:\dm9b.epd > d-ch.epd

d-ch.epd is empty.
You have to look at the score from a plus/minus perspective , those mates shown are white mates if black plays a bad move 😳 - that is why they are shown below the drawing moves sequence is black moves that win, black moves that draw and black moves that lose.
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Dann Corbit
Posts: 12791
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Some test positions

Post by Dann Corbit »

MikeB wrote:
Dann Corbit wrote:
MikeB wrote:
King Solomon wrote:Tested a few engines on these a while back, they seemed hard to crack. Interested to see if things have changed. I think the given moves are unique best but could be wrong.

Enjoy!

Code: Select all

2r1r1k1/1p4pp/pP1b4/2pP1p1b/2P1pP2/2B3PP/1P3KB1/R3R3 w - - bm g4
r1br2k1/1p4p1/p1nBp1n1/q5PB/4Np2/2P1Q3/3R4/4K1R1 w - - bm Nf6+
r1q1rbk1/2pp1ppp/p1b5/3NP3/3Q4/1P1R2B1/P4PPP/R5K1 w - - bm Nf6+
1rb1qrk1/6pp/2n1pn2/3pN1P1/2pP1P2/b1p1B3/P3QN1P/1BR2RK1 w - - bm Rxc3
r1b2rk1/pp4pp/2n1p1p1/3pP1B1/q1pP1PQ1/P1P5/2P1N1PP/R4RK1 w - - bm f5
rnbqk2r/p4p2/2p1p3/1p2N1pp/PbpPn2P/2N1P1B1/1P3PP1/R2QKB1R w KQkq - - bm Qf3
r1bq1rk1/1p2b2p/2p1pppQ/p7/1n1PN2P/3B1N2/PPPR1PP1/2K4R w - - bm Neg5
2r2bk1/pNq3p1/2Pp3p/1p1Prp2/1P2p1P1/6Q1/P4P1P/2RR2K1 w - - bm Qxe5
k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4
8/2p2kb1/np1p2p1/pN1Pp1Pp/2P1P2P/1P6/P4BK1/8 w - - bm Nxc7
2r1r1k1/4bppp/1q4n1/3pP3/p1pP4/PnR2NBP/1P4P1/1B1QR2K w - - bm e6
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+
[d]k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4

we can discard this one:

Code: Select all

 39	 -132.64 	8.16G	4:06.84	Kb7 Kb2 Kb6 Ne6 c5 Kc3 Rf7 Kd3 Rxf5 Nxg7 Rf4 h5 Ka5 Ne6 Rf5 Ng7 Rf7 Ne6 Kb4 Ke4 Kxc4 Ng5 Rf6 Nh3 Kb3 Ke5 Rf8 Nf4 c4 Ne6 Rh8 Nd4+ Kc3 Nb5+ Kd3 Kd5 Rxh5+ Kc6 c3 Na3 c2 Nxc2 
 39	 -132.62 	8.16G	4:06.99	Re4 Ne6 g6 fxg6 Rxe6 h5 Re2+ Kb3 Rg2 Kc3 Kb8 Kd3 Kc7 Ke4 Kd7 Kf3 Rg1 Kf2 Rg5 h4 Rf5+ Kg3 Ke6 Kg4 Rf2 h6 Rg2+ Kh5 Kf6 h7 Kg7 c5 Rg1 h8=Q+ Kxh8 Kh6 Rc1 g7+ Kg8 h5 Rxc5 Kg6 Rc1 Kf6 c5 Ke5 Kxg7 Kd5 c4 Ke5 c3 Kd5 c2 Kc6 Rd1 Kb7 c1 
 39	 -132.62 	8.16G	4:06.96	Ka7 Ne6 g6 fxg6 Rxe6 h5 Re2+ Kb3 Rg2 Kc3 Kb8 Kd3 Kc7 Ke4 Kd7 Kf3 Rg1 Kf2 Rg5 h4 Rf5+ Kg3 Ke6 Kg4 Rf2 h6 Rg2+ Kh5 Kf6 h7 Kg7 c5 Rg1 h8=Q+ Kxh8 Kh6 Rc1 g7+ Kg8 h5 Rxc5 Kg6 Rc1 Kf6 c5 Ke5 Kxg7 Kd5 c4 Ke5 c3 Kd5 c2 Kc6 Rd1 Kb7 c1 
 39	 -132.59 	8.17G	4:07.14	Re5 Nh5 Rxf5 Nxg7 Rf6 Kb3 Ka7 Kc3 Kb6 h5 Kc5 Kd3 Rf7 Ne6+ Kb4 Kd4 Rf5 Ng7 c5+ Ke4 Rf8 Ne6 Rf7 Nf4 Kxc4 Kf3 Kd4 Kg4 c4 h6 Rd7 Ng2 c3 Ne1 Ke3 Nc2+ Kd3 Na1 Ra7 Nb3 c2 Nc1+ Kd2 Nb3+ Kd1 Kf5 Rb7 h7 Rxb3 h8=Q 
 39	 -132.59 	8.16G	4:07.03	Rf7 Ne6 Rxf5 Nxg7 Rf6 Kb3 Ka7 Kc3 Kb6 h5 Kc5 Kd3 Rf7 Ne6+ Kb4 Kd4 Rf5 Ng7 c5+ Ke4 Rf8 Ne6 Rf7 Nf4 Kxc4 Kf3 Kd4 Kg4 c4 h6 Rd7 Ng2 c3 Ne1 Ke3 Nc2+ Kd3 Na1 Ra7 Nb3 c2 Nc1+ Kd2 Nb3+ Kd1 Kf5 Rb7 h7 Rxb3 h8=Q 
 39	 -132.55 	8.57G	4:19.33	Kb8 Kb3 Rf7 Nh5 Kc7 c5 Kd7 Ng3 Ke7 Kc4 Kf6 Ne2 Ke5 Nd4 Rf6 Kd3 Rh6 Ke3 Kd5 Nf3 Kxc5 Kf4 Kb4 Ne5 c5 Nd3+ Kb5 Kg3 c4 Ne1 Kb4 Nf3 c3 Nd4 Kc4 Nc2 Kb3 Nd4+ Kb2 Ne6 c2 Nc5 Kc3 Ne4+ Kc4 Nd2+ Kb4 Nf3 c1=Q Kg2 Rxh4 Nxh4 Qg5+ Kh3 Qf4 f 
 39	 -17.97 	8.92G	4:30.37	c5 Kb3 Kb7 Kc2 Rf7 Kd3 Rxf5 Ke4 Rf6 h5 Kc6 Ke5 Rh6 h3 Kd7 Kd5 Rf6 Ke5 Rd6 Nd5 Re6+ Kf4 Re1 Ne3 Ke6 h4 Re2 Nd5 Rc2 Ne3 Rc1 Kg5 Rh1 Ng4 Rg1 Kf4 Rf1+ Kg5 Rf5+ Kg6 Rf4 Kg5 Rd4 Ne3 Re4 Nf1 Ke5 Nh2 Rxc4 Nf3+ Kd5 Nd2 Rc1 Kg4 Rg1+ Kh3 
 39	  0.00 	9.25G	4:40.92	Re8 Ne6 Rh8 Nxg7 Rxh4 Kb3 Kb7 Ne6 Rh6 Nc5+ Kb6 Ne6 Rxh2 f6 Rf2 f7 Rf3+ Kb4 Rxf7 
 39	  0.00 	9.24G	4:40.58	Rd7 Ne6 Kb8 Kb3 Rf7 h5 Rxf5 Nxg7 Rf3+ Kb4 Rh3 Kc5 Kc7 Ne6+ Kd7 Nf8+ Ke7 Ng6+ Kf6 Kxc6 Kg5 Kd6 Rxh5 
 39	  0.00 	9.21G	4:39.62	Rc7 Ne6 Rb7 h5 Ra7+ Kb3 Rb7+ Kc3 Rd7 Nc5 Rd6 Ne6 Rd7 
 39	  0.00 	9.15G	4:37.62	Re1 h5 Rf1 Ne6 Rxf5 Nxg7 Rf2+ Kb3 Rxh2 h6 Kb7 h7 Rh3+ Kb4 Rxh7 
 39	  0.00 	9.09G	4:35.78	Re3 h5 Kb7 Ne6 Rh3 Nxg7 Kc7 f6 Rxh2+ Kb3 Kd6 h6 Rh3+ Kb4 c5+ Kb5 Rh2 f7 Ke7 Kxc5 Kxf7 
 39	  0.00 	9.02G	4:33.52	Ra7+ Kb3 Rf7 Ne6 Rxf5 Nxg7 Rf7 Ne6 Rf6 Nd4 c5 Ne2 Rf3+ Ka4 Rf2 Nc3 Rxh2 Kb5 Rh3 Ne4 Rxh4 
 39	  0.00 	8.94G	4:31.17	Rb7 Ne6 Kb8 h5 Kc8 Ka3 Rf7 Kb4 c5+ Nxc5 Rxf5 Ne6 Rxh5 Nxg7 
 39	  #19 	9.28G	4:41.78	g5 fxg6 Kb7 h5 Re4 g7 Rxc4 h6 Rxf4 h7 Rf2+ Kb3 Rf3+ Kc4 Rf4+ Kd3 Rf3+ Ke4 Ra3 g8=Q Ra4+ Ke5 Rh4 h8=Q Rxh8 Qxh8 Kc7 Qg7+ Kb6 Kd6 Kb5 Qc3 c5 Qb3+ Ka6 Kc6 Ka5 Qa3# 
 39	  #19 	9.26G	4:41.17	g6 fxg6 Kb7 h5 Re4 g7 Rxc4 h6 Rxf4 h7 Rf2+ Kb3 Rf3+ Kc4 Rf4+ Kd3 Rf3+ Ke4 Ra3 g8=Q Ra4+ Ke5 Rh4 h8=Q Rxh8 Qxh8 Kc7 Qg7+ Kb6 Kd6 Kb5 Qc3 c5 Qb3+ Ka6 Kc6 Ka5 Qa3# 
 39	  #14 	9.38G	4:44.81	Re2+ Nxe2 Kb7 f6 gxf6 h5 Kc8 h6 Kd7 h7 Kd6 h8=Q Ke5 Kb3 Ke6 Qe8+ Kd6 Nd4 f5 Qxc6+ Ke5 Kc3 Kf4 Qf6 Ke3 Qh4 f4 Qe1# 
 39	    #9 	9.39G	4:45.02	Re6 fxe6 Kb7 e7 Kc7 e8=Q Kd6 Qe6+ Kc5 Kb3 Kb6 Qe7 g6 Ne6 Ka6 Qc7 c5 Nxc5#
Something strange here. Chest319 in brute force mode did not find a mate in 10 or less. It will find a mate for or against in the ply range of the flag -z.

chest319 -b -M 1000 -z11 Q:\dm9b.epd > d-ch.epd

d-ch.epd is empty.
You have to look at the score from a plus/minus perspective , those mates shown are white mates if black plays a bad move 😳 - that is why they are shown below the drawing moves sequence is black moves that win, black moves that draw and black moves that lose.
Yes, but Chest would have found those too. I think the score is wrong.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Some test positions

Post by zullil »

Dann Corbit wrote: Something strange here. Chest319 in brute force mode did not find a mate in 10 or less. It will find a mate for or against in the ply range of the flag -z.

chest319 -b -M 1000 -z11 Q:\dm9b.epd > d-ch.epd

d-ch.epd is empty.
plies vs moves?
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User avatar
Eelco de Groot
Posts: 4669
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: Some test positions

Post by Eelco de Groot »

zullil wrote:
Dann Corbit wrote: Something strange here. Chest319 in brute force mode did not find a mate in 10 or less. It will find a mate for or against in the ply range of the flag -z.

chest319 -b -M 1000 -z11 Q:\dm9b.epd > d-ch.epd

d-ch.epd is empty.
plies vs moves?
April first? No. Full moon? No. This must be the FakeChess.com Forum then.
39 #9 9.39G 4:45.02 Re6 fxe6 Kb7 e7 Kc7 e8=Q Kd6 Qe6+ Kc5 Kb3 Kb6 Qe7 g6 Ne6 Ka6 Qc7 c5 Nxc5#
Does McBrain have a helpmate mode :)

[pgn]
[Event "?"]
[Site "?"]
[Date "2017.09.12"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - -"]

1... Re6 2. fxe6 Kb7 3. e7 Kc7 4. e8=Q Kd6 5. Qe6+ Kc5
6. Kb3 Kb6 7. Qe7 g6 8. Ne6 Ka6 9. Qc7 c5 10. Nxc5# *
[/pgn]
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Some test positions

Post by zullil »

Eelco de Groot wrote:
zullil wrote:
Dann Corbit wrote: Something strange here. Chest319 in brute force mode did not find a mate in 10 or less. It will find a mate for or against in the ply range of the flag -z.

chest319 -b -M 1000 -z11 Q:\dm9b.epd > d-ch.epd

d-ch.epd is empty.
plies vs moves?
April first? No. Full moon? No. This must be the FakeChess.com Forum then.
39 #9 9.39G 4:45.02 Re6 fxe6 Kb7 e7 Kc7 e8=Q Kd6 Qe6+ Kc5 Kb3 Kb6 Qe7 g6 Ne6 Ka6 Qc7 c5 Nxc5#
Does McBrain have a helpmate mode :)

[pgn]
[Event "?"]
[Site "?"]
[Date "2017.09.12"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - -"]

1... Re6 2. fxe6 Kb7 3. e7 Kc7 4. e8=Q Kd6 5. Qe6+ Kc5
6. Kb3 Kb6 7. Qe7 g6 8. Ne6 Ka6 9. Qc7 c5 10. Nxc5# *
[/pgn]
Michael's output showed scores for a variety of moves by Black. The winning ones, followed by the drawing ones, followed by some losers.

I too was confused at first by his post. Maybe I still am. :wink:
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User avatar
MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: Some test positions

Post by MikeB »

Eelco de Groot wrote:
zullil wrote:
Dann Corbit wrote: Something strange here. Chest319 in brute force mode did not find a mate in 10 or less. It will find a mate for or against in the ply range of the flag -z.

chest319 -b -M 1000 -z11 Q:\dm9b.epd > d-ch.epd

d-ch.epd is empty.
plies vs moves?
April first? No. Full moon? No. This must be the FakeChess.com Forum then.
39 #9 9.39G 4:45.02 Re6 fxe6 Kb7 e7 Kc7 e8=Q Kd6 Qe6+ Kc5 Kb3 Kb6 Qe7 g6 Ne6 Ka6 Qc7 c5 Nxc5#
Does McBrain have a helpmate mode :)

[pgn]
[Event "?"]
[Site "?"]
[Date "2017.09.12"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - -"]

1... Re6 2. fxe6 Kb7 3. e7 Kc7 4. e8=Q Kd6 5. Qe6+ Kc5
6. Kb3 Kb6 7. Qe7 g6 8. Ne6 Ka6 9. Qc7 c5 10. Nxc5# *
[/pgn]
[d]k7/6p1/2p1r3/5P2/2P2N1P/8/K6P/8 w - - 1 2

After black plays Re6 , it is a mate in nine for white - confirmed by K and SF. I did enjoy all the replies - so much so, I may continue to make obsfucated posts , however most will likely be unintentional :shock:
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King Solomon
Posts: 7
Joined: Thu Aug 31, 2017 1:26 am

Re: Some test positions

Post by King Solomon »

Any comments on the other positions?
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