Is there a difficult EPD file with test positions

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Vinvin
Posts: 4766
Joined: Thu Mar 09, 2006 8:40 am
Full name: Vincent Lejeune

Re: Is there a difficult EPD file with test positions

Post by Vinvin » Tue Oct 01, 2019 12:09 pm

Vinvin wrote:
Sun Sep 29, 2019 10:27 pm
mclane wrote:
Sun Sep 29, 2019 7:48 pm
How much time do you give the engines ?
I'll post results for Hard-2020-beta3.epd very soon, please wait 1 or 2 days.
Done here : viewtopic.php?p=813988#p813988

Vinvin
Posts: 4766
Joined: Thu Mar 09, 2006 8:40 am
Full name: Vincent Lejeune

Re: Is there a difficult EPD file with test positions

Post by Vinvin » Tue Oct 01, 2019 12:11 pm

mclane wrote:
Sun Sep 29, 2019 11:55 am
That are difficult even for todays engines ?
E.g. if we want to test LC0 or Stockfish versions by a test suite, we would need a stronger test suite because they search
Very deep and todays computers are very fast.

Please a few difficult New epd Test suites.
Thorsten, here are the 48 hardest (for the recent Stockfish) positions from my Hard-Talkchess-2020 set.
I hope someone will run this subset with a fast 16 cores, 1 hour per position.

Code: Select all

1k6/3p4/1B6/4Pp1p/1p5R/1p4p1/pP3n2/K6n w - - bm Rxh1;                                 
1nb3rr/2pp3p/p1k2P2/n1q1PN2/P1pR3N/b4PBp/1R2P3/1KQ5 w - - bm Rd6+;                    
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+;              
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - bm Rxb3+;                        
1rb4k/p5np/3p1rp1/1ppB4/2N2P2/1P2R1P1/P1P4P/4R1K1 w - - bm Re8+;                      
2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - bm Nd6+;                          
2bqrr1k/p5b1/1p1p2pp/nPpBp3/P1P1N2P/3PN1P1/R4P1K/3Q1R2 w - - bm Nc3;                  
2r2r1k/qb3p1p/p2p1Np1/np1Pp1P1/2P5/3RP2P/5R2/4Q1K1 w - - bm Rf4;                      
3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PPB5/8 w - - bm Ba4+;                      
3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - bm Nd4;                                    
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4;                                     
4R3/P7/2bB2p1/r3pk2/2p2p1P/2P2P1K/6P1/8 w - - bm Rxe5+;                               
4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8 w - - bm a8=B;                                     
4k1br/1K1p1n1r/2p2pN1/P2p1N2/2P3pP/5B2/P2P4/8 w - - bm Kc8;                           
4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - bm Qxe5;                             
4r1k1/1r1np3/1pqp1ppB/p7/2b1P1PQ/2P2P2/P3B2R/3R2K1 w - - bm Bg5;                      
6br/1KNp1n1r/2p2p2/P1ppRP2/1kP3pP/3PBB2/PN1P4/8 w - - bm Bxc5+;                       
7k/4PBNp/7P/2p5/2P5/2rq2Pp/1P3P1K/8 b - - bm Qxg3+;                                   
8/2N4r/1p3pkp/8/5K1p/2P4N/P3Bn2/8 w - - bm Bh5+;                                      
8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - bm Nf6+;                                 
N7/8/2KQ2rp/6k1/3p3p/2p4P/4PP2/5N2 w - - bm f4+;                                      
qrb5/b1Pp3p/1pkB4/1p2P3/1P1KPp2/R4P1p/P3pP1P/4N1n1 w - - bm Rc3+;                     
r1b2rk1/2q1bppp/p2pp3/2n3PQ/1p1BP3/1BN5/PPP2P1P/2KR2R1 w - - bm Bf6;                  
r1b2rk1/pp3ppp/1n2p3/3pP3/2P2B2/b1PB1qP1/P1Q1NP1P/1K1R3R w - - bm Nd4;                
r2qrbk1/1b3p2/3p2pB/1p1P1N2/1np1P3/5NRP/1P3PP1/1B1Qn1K1 w - - bm N3h4;                
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+;                  
rn3r1k/pn1p1ppq/bpp4p/7P/4N1Q1/6P1/PP3PB1/R1B1R1K1 w - - bm Bg5;                      
rnb2rk1/1pq1bppp/p3p3/2npP1P1/3N1P2/2NBB3/PPP4P/R2QK2R w KQ - bm Bxh7+;               
rnbq1rk1/p3bp2/2p1p1p1/1p1nP1P1/2pP1P2/2N5/PP4P1/RBBQK2R w KQ - bm Bd2;               
r1qn1rk1/p1pp1ppp/1p2p2b/1P2P3/P7/R2B1N2/1P4PP/3Q1R1K w - - bm Bxh7+;                 
r4rk1/pb3pp1/1p1qpR2/2ppN3/3P4/2P4P/PP1pQ1P1/3R2K1 w - - bm Qxd2 Ng4;                 
Nq3n1k/8/P1p2Npp/2Kp3R/pp6/n3p3/8/4Q3 w - - bm Nc7;                                   
r7/1q1r1p1k/3p1Qpp/pbpP4/1nB1P1P1/1P3NBP/5P1K/4R3 w - - bm Bf4;                       
r2q1r2/1b2bpkp/n3p1p1/2ppP1P1/p6R/1PN1BQR1/NPP2P1P/4K3 w - - bm Qf6+;                 
5rk1/pp3p1p/7b/2pR4/8/2P4P/P1PNr1P1/2K4R b - - bm Rxd2;                               
4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - - bm Qd8;                                  
1B1r4/rp2npkp/2b1pbp1/1qp5/nPN1R3/1P1P1QP1/2P2PBP/5R1K w - - bm Qxf6+;                
7q/b1p5/1p1Npkb1/pPP2ppP/P1P5/3B2P1/5P1R/K3R3 w - - bm hxg6;                          
8/1B3b1p/7P/p2p4/P2pp1kp/Q7/1N1Pq2P/7K w - - bm Qh3+;                                 
1r3rk1/5p1p/p2pb1p1/3Np1P1/2pRPR2/qP2Q1N1/P1PK3P/8 w - - bm Nf5;                      
r1bq1b1r/pp1pp1pp/2n1k3/8/4nQ2/N1p1BN1P/PP3PP1/R3K2R w KQ - bm Nb5;                   
3nn3/2p2p1k/1p1pp1p1/p2B3p/r2B2N1/4P2N/3PKPP1/6q1 w - - bm Ng5+;                      
r4rk1/1bq1bppp/p1npp3/2nB1NP1/1p2P3/2N1B3/PPP1QP1P/2KR2R1 w - - bm Qh5;               
r1b1qk1r/pn3pp1/1p2p3/3pP1Bp/1bPN4/4Q1R1/P2N1PP1/R5K1 w - - bm Bf6;                   
8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - bm Ng2;                                 
r1br2k1/1p1nqppp/p1p1pn2/3p4/1bPP4/PPN1PN2/2BB1PPP/R2Q1RK1 b - - am Bxa3;             
5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - bm c8=N;                                  
8/bp4Pk/4KB2/R6p/2pNp1P1/p7/3p1Pnq/2r5 w - - bm Nc6;                                  

MikeGL
Posts: 962
Joined: Thu Sep 01, 2011 12:49 pm

Re: Is there a difficult EPD file with test positions

Post by MikeGL » Tue Oct 01, 2019 12:37 pm

Vinvin wrote:
Tue Oct 01, 2019 12:11 pm
mclane wrote:
Sun Sep 29, 2019 11:55 am
That are difficult even for todays engines ?
E.g. if we want to test LC0 or Stockfish versions by a test suite, we would need a stronger test suite because they search
Very deep and todays computers are very fast.

Please a few difficult New epd Test suites.
Thorsten, here are the 48 hardest (for the recent Stockfish) positions from my Hard-Talkchess-2020 set.
I hope someone will run this subset with a fast 16 cores, 1 hour per position.

Code: Select all

1k6/3p4/1B6/4Pp1p/1p5R/1p4p1/pP3n2/K6n w - - bm Rxh1;                                 
1nb3rr/2pp3p/p1k2P2/n1q1PN2/P1pR3N/b4PBp/1R2P3/1KQ5 w - - bm Rd6+;                    
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+;              
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - bm Rxb3+;                        
1rb4k/p5np/3p1rp1/1ppB4/2N2P2/1P2R1P1/P1P4P/4R1K1 w - - bm Re8+;                      
2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - bm Nd6+;                          
2bqrr1k/p5b1/1p1p2pp/nPpBp3/P1P1N2P/3PN1P1/R4P1K/3Q1R2 w - - bm Nc3;                  
2r2r1k/qb3p1p/p2p1Np1/np1Pp1P1/2P5/3RP2P/5R2/4Q1K1 w - - bm Rf4;                      
3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PPB5/8 w - - bm Ba4+;                      
3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - bm Nd4;                                    
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4;                                     
4R3/P7/2bB2p1/r3pk2/2p2p1P/2P2P1K/6P1/8 w - - bm Rxe5+;                               
4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8 w - - bm a8=B;                                     
4k1br/1K1p1n1r/2p2pN1/P2p1N2/2P3pP/5B2/P2P4/8 w - - bm Kc8;                           
4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - bm Qxe5;                             
4r1k1/1r1np3/1pqp1ppB/p7/2b1P1PQ/2P2P2/P3B2R/3R2K1 w - - bm Bg5;                      
6br/1KNp1n1r/2p2p2/P1ppRP2/1kP3pP/3PBB2/PN1P4/8 w - - bm Bxc5+;                       
7k/4PBNp/7P/2p5/2P5/2rq2Pp/1P3P1K/8 b - - bm Qxg3+;                                   
8/2N4r/1p3pkp/8/5K1p/2P4N/P3Bn2/8 w - - bm Bh5+;                                      
8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - bm Nf6+;                                 
N7/8/2KQ2rp/6k1/3p3p/2p4P/4PP2/5N2 w - - bm f4+;                                      
qrb5/b1Pp3p/1pkB4/1p2P3/1P1KPp2/R4P1p/P3pP1P/4N1n1 w - - bm Rc3+;                     
r1b2rk1/2q1bppp/p2pp3/2n3PQ/1p1BP3/1BN5/PPP2P1P/2KR2R1 w - - bm Bf6;                  
r1b2rk1/pp3ppp/1n2p3/3pP3/2P2B2/b1PB1qP1/P1Q1NP1P/1K1R3R w - - bm Nd4;                
r2qrbk1/1b3p2/3p2pB/1p1P1N2/1np1P3/5NRP/1P3PP1/1B1Qn1K1 w - - bm N3h4;                
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+;                  
rn3r1k/pn1p1ppq/bpp4p/7P/4N1Q1/6P1/PP3PB1/R1B1R1K1 w - - bm Bg5;                      
rnb2rk1/1pq1bppp/p3p3/2npP1P1/3N1P2/2NBB3/PPP4P/R2QK2R w KQ - bm Bxh7+;               
rnbq1rk1/p3bp2/2p1p1p1/1p1nP1P1/2pP1P2/2N5/PP4P1/RBBQK2R w KQ - bm Bd2;               
r1qn1rk1/p1pp1ppp/1p2p2b/1P2P3/P7/R2B1N2/1P4PP/3Q1R1K w - - bm Bxh7+;                 
r4rk1/pb3pp1/1p1qpR2/2ppN3/3P4/2P4P/PP1pQ1P1/3R2K1 w - - bm Qxd2 Ng4;                 
Nq3n1k/8/P1p2Npp/2Kp3R/pp6/n3p3/8/4Q3 w - - bm Nc7;                                   
r7/1q1r1p1k/3p1Qpp/pbpP4/1nB1P1P1/1P3NBP/5P1K/4R3 w - - bm Bf4;                       
r2q1r2/1b2bpkp/n3p1p1/2ppP1P1/p6R/1PN1BQR1/NPP2P1P/4K3 w - - bm Qf6+;                 
5rk1/pp3p1p/7b/2pR4/8/2P4P/P1PNr1P1/2K4R b - - bm Rxd2;                               
4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - - bm Qd8;                                  
1B1r4/rp2npkp/2b1pbp1/1qp5/nPN1R3/1P1P1QP1/2P2PBP/5R1K w - - bm Qxf6+;                
7q/b1p5/1p1Npkb1/pPP2ppP/P1P5/3B2P1/5P1R/K3R3 w - - bm hxg6;                          
8/1B3b1p/7P/p2p4/P2pp1kp/Q7/1N1Pq2P/7K w - - bm Qh3+;                                 
1r3rk1/5p1p/p2pb1p1/3Np1P1/2pRPR2/qP2Q1N1/P1PK3P/8 w - - bm Nf5;                      
r1bq1b1r/pp1pp1pp/2n1k3/8/4nQ2/N1p1BN1P/PP3PP1/R3K2R w KQ - bm Nb5;                   
3nn3/2p2p1k/1p1pp1p1/p2B3p/r2B2N1/4P2N/3PKPP1/6q1 w - - bm Ng5+;                      
r4rk1/1bq1bppp/p1npp3/2nB1NP1/1p2P3/2N1B3/PPP1QP1P/2KR2R1 w - - bm Qh5;               
r1b1qk1r/pn3pp1/1p2p3/3pP1Bp/1bPN4/4Q1R1/P2N1PP1/R5K1 w - - bm Bf6;                   
8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - bm Ng2;                                 
r1br2k1/1p1nqppp/p1p1pn2/3p4/1bPP4/PPN1PN2/2BB1PPP/R2Q1RK1 b - - am Bxa3;             
5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - bm c8=N;                                  
8/bp4Pk/4KB2/R6p/2pNp1P1/p7/3p1Pnq/2r5 w - - bm Nc6;                                  


The third positiion with bm Qf6+! is quickly solved by Lc0 in less than 1 second.
see here viewtopic.php?f=2&t=54487&start=120#p771848

Code: Select all

Lc0 10815:
1/2 00:00 2 64 +1,90 Be1-f2 Rf8-h8
2/3 00:00 6 111 +1,50 Be1-f2 Rf8-h8 Rd1-f1
3/4 00:00 20 270 +0,96 Be1-f2 Rf8-h8 Rh3-h6 Qb6-d8
3/5 00:00 45 463 +1,70 Be1-d2 Rf8-h8 Rh3-h6 Nc2xa3 h2-h4
4/6 00:00 109 807 +1,17 Be1-d2 Rf8-h8 Rd1-f1 Qb6-d8 Rh3-h6 Bc6-e8
4/7 00:00 223 1,179 +1,13 Be1-d2 Rf8-h8 Rd1-f1 Qb6-d8 Rh3-h6 Bc6-e8
4/9 00:00 372 1,530 +1,03 Be1-d2 Rf8-h8 Rd1-f1 Qb6-d8 Rh3-h6 Bc6-e8
5/10 00:00 431 1,584 +1,03 Be1-d2 Rf8-h8 Rd1-f1 Qb6-d8 Rh3-h6 Bc6-e8
5/11 00:00 499 1,657 +1,70 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xe1 Rd1xe1 Rb8-b7 Bh5-g4
5/12 00:00 658 1,665 +1,54 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xe1 Rd1xe1 Rb8-b7 Bh5-g4
6/12 00:00 710 1,674 +1,50 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 g6xh5 Rh3xh5 Nc2-e3 Be1-d2 Ne3xd1 Kh1-g1
6/13 00:00 774 1,751 +1,67 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Rb8-b7 Bh5-e2 Nc2xe1 Rd1xe1 Rf8-d8 Re1-f1
7/13 00:00 1,057 2,017 +1,69 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Rb8-b7 Bh5-e2 Nc2xe1 Rd1xe1 Rf8-d8 Re1-f1
7/14 00:00 1,335 2,115 +1,96 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Rb8-b7 Bh5-e2 Nc2xe1 Rd1xe1 Rf8-d8 Re1-f1
7/15 00:00 1,532 2,220 +2,10 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 g6xh5 Be1-f2 Rf8-d8 Rh3xh5 Nc2xd4 Bf2xd4
8/15 00:00 1,753 2,343 +2,21 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Rf8-d8 Be1-f2 g6xh5 Rh3xh5 Nc2xd4 Bf2xd4
9/15 00:01 3,167 2,598 +2,05 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-c2 Rh3-h7 Nc2xe1 Rd1xe1 a4-a3 Rh7-g7+
9/16 00:01 3,382 2,621 +2,06 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-c2 Rh3-h7 Nc2xe1 Rd1xe1 a4-a3 Rh7-g7+
9/17 00:01 3,715 2,695 +2,05 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-c2 Rh3-h7 Nc2xe1 Rd1xe1 a4-a3 Rh7-g7+
9/18 00:01 4,155 2,770 +1,98 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-c2 Rh3-h7 Nc2-e3 Be1-d2 Ne3xd1 Bf3xd1 a4-a3 Rh7-g7+
9/20 00:01 4,924 2,854 +1,87 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-c2 Rh3-h7 Nc2-e3 Be1-d2 Ne3xd1 Bf3xd1 a4-a3 Rh7-g7+
10/20 00:02 5,993 2,944 +1,94 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-e2 Na3-c2 Rh3-h7 Nc2xe1 Rd1xe1 a4-a3 Rh7-g7+ Kg8-h8 Re1-f1 Qb6xd4
10/21 00:02 8,291 2,984 +1,72 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-e2 Na3-c2 Rh3-h7 Nc2-e3 Be1-d2 Ne3xd1 Be2xd1 a4-a3 Rh7-g7+ Kg8-h8
11/21 00:04 13,935 3,118 +1,58 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-e2 Na3-c2 Be1-f2 a4-a3 Rh3-h7 a3xb2 Rh7-g7+ Kg8-h8 Rd1-g1 b2-b1Q Rg1xb1 Nc2xd4
11/22 00:04 15,910 3,198 +1,54 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-e2 Na3-c2 Be1-f2 a4-a3 Rh3-h7 a3xb2 Rd1-g1 b2-b1Q Rg1xb1 Qb6-a5 Rh7-g7+ Kg8-h8
11/23 00:05 18,629 3,296 +1,54 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-e2 Na3-c2 Be1-f2 a4-a3 Rh3-h7 a3xb2 Rd1-g1 b2-b1Q Rg1xb1 Qb6-a5 Rh7-g7+ Kg8-h8
11/24 00:05 19,230 3,321 +1,56 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-c2 Be1-f2 a4-a3 Rh3-h7 a3xb2 Rd1-g1 b2-b1Q Rg1xb1 b3-b2 Rh7-g7+ Kg8-h8
12/24 00:06 20,987 3,333 +1,56 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-c2 Be1-f2 a4-a3 Rh3-h7 a3xb2 Rd1-g1 Nc2xd4 Bf2xd4 Qb6xd4 c3xd4 c4-c3 Rh7-g7+ Kg8-h8
12/25 00:06 22,595 3,353 +1,52 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Be1-f2 a3xb2 Rd1-g1 b2-b1Q Rg1xb1 Nb5xc3
13/25 00:09 34,770 3,575 +1,33 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Be1-f2 Nb5xc3 Rd1-g1 Nc3-e4 Bf3xe4 d5xe4 Bf2-e3 a3xb2 Rg7-h7+
13/26 00:10 36,725 3,567 +1,31 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Be1-f2 Nb5xc3 Rd1-g1 a3xb2 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8
13/27 00:11 41,246 3,618 +1,25 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Be1-f2 Nb5xc3 Rd1-g1 a3xb2 Rg1-g4 b2-b1Q+ Kh1-g2 Qb1-e4 Bf3xe4 Nc3xe4
14/27 00:14 54,692 3,734 +1,13 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Kh1-g2 a3xb2 Rg7-h7+ Kh8-g8 Bf3-g4 b2-b1R Rd1xb1 Nb5xd4
14/28 00:15 56,581 3,724 +1,13 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Kh1-g2 a3xb2 Rg7-h7+ Kh8-g8 Bf3-g4 b2-b1R Rd1xb1 Nb5xd4
14/29 00:15 58,528 3,752 +1,10 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Kh1-g2 a3xb2 Rg7-h7+ Kh8-g8 Bf3-g4 b2-b1R Rd1xb1 Nb5xd4
14/29 00:20 76,002 3,689 +1,02 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Kh1-g2 a3xb2 Be1-d2 Nb5xd4 Rg7-h7+
14/30 00:24 87,441 3,637 +1,01 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Kh1-g2 a3xb2 Be1-d2 Nb5xd4 Rg7-h7+
15/30 00:28 104,399 3,607 +0,98 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Bh5-f3 Na3-b5 Rh3-h7 a4-a3 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Be1-f2 Nb5xc3 Rh7-g7+ Kg8-h8 Rd1-g1 Nc3-e4 Bf3xe4 d5xe4 Bf2-e3 a3xb2 Rg7-h7+
15/30 00:33 124,537 3,668 +1,11 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rd1-g1 Nb5-d6 Rh3-h7 Nd6-f5 Bf3-g4 a4-a3 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Rg1-g3 a3xb2 Rg3-h3+
15/30 00:38 143,525 3,684 +1,25 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Na3-c2 Rd1-g1 Qb6-c7 Bh5-f3 a4-a3 Rg1-g4 a3xb2 Rg4-h4 b2-b1Q+ Bf2-g1 Qb1xg1+ Kh1xg1 b3-b2 Rh4-h8+
15/35 00:48 184,453 3,770 +1,48 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Na3-c2 Rd1-g1 Qb6-c7 Bh5-f3 a4-a3 Rg1-g4 a3xb2 Rg4-h4 b2-b1Q+ Bf2-g1 Qb1xg1+ Kh1xg1 b3-b2 Rh4-h8+
16/35 00:52 196,477 3,773 +1,51 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Qb6-c7 Bh5-f3 Na3-b5 Rd1-g1 Nb5-d6 e5xd6 Qc7-d8 Bf2-g3 Qd8xf6 Bg3-e5 Qf6-g7 Be5xg7 Kg8xg7 Rh3-h7+ Kg7-g8 h2-h4 a4-a3 h4-h5 a3xb2 h5-h6 Rb8-a8 Rh7-g7+ Kg8-h8
16/35 00:57 211,669 3,708 +1,57 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rd1-g1 Nb5xd4 c3xd4 c4-c3 Rg1-g4 Qb6-a6 Kh1-g2 Qa6-f1+ Kg2xf1 Bc6-b5+ Kf1-g2 c3xb2 Rg4-h4 Bb5-f1+ Kg2xf1 b2-b1Q+ Kf1-g2 Qb1-f1+ Kg2xf1
16/35 01:02 233,433 3,759 +1,61 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rd1-g1 Nb5xd4 c3xd4 c4-c3 Rg1-g4 Qb6-a6 Kh1-g2 c3-c2 Bf2-e3 Bc6-b5 Rh3-h7 Bb5-f1+ Kg2-g3 Qa6-d3 Rg4-h4 Bf1-h3
17/35 01:07 253,425 3,777 +1,66 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-c2 Rd1-g1 Nc2xd4 c3xd4 c4-c3 Rg1-g4 Qb6-a6 Kh1-g2 c3-c2 Bf2-e3 Bc6-b5 Rh3-h7 Bb5-f1+ Kg2-f2 c2-c1Q Rg4-h4 Qc1-e1+ Kf2xe1 Qa6-e2+
17/35 01:12 277,666 3,849 +1,72 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-c2 Rd1-g1 Nc2xd4 c3xd4 c4-c3 Rg1-g4 Qb6-a6 Kh1-g2 c3-c2 Bf2-e3 Bc6-b5 Rh3-h7 Bb5-f1+ Kg2-f2 c2-c1Q Rg4-h4 Qc1-e1+ Kf2xe1 Qa6-e2+
17/35 01:22 322,343 3,924 +1,76 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-c2 Rd1-g1 Nc2xd4 c3xd4 c4-c3 Rg1-g4 Qb6-a6 Kh1-g2 c3-c2 Bf2-e3 Bc6-b5 Rh3-h7 Bb5-f1+ Kg2-f2 c2-c1Q Rg4-h4 Qc1-e1+ Kf2xe1 Qa6-e2+
17/35 01:27 344,879 3,957 +1,70 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rd1-g1 Nb5-d6 Rh3-h7 Nd6-f5 Bf3-g4 Bc6-d7 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Kh1-g2 f5-f4 Rh7-g7+ Kg8-h8 Kg2-f3 Bd7-f5
17/35 01:32 363,560 3,945 +1,70 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rd1-g1 Nb5-d6 Rh3-h7 Nd6-f5 Bf3-g4 Bc6-d7 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Bf2-e3 f5-f4 Rg7-h7+ Kh8-g8 Be3xf4 Bd7-f5 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Rg7-h7+
18/35 01:34 375,315 3,971 +1,69 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rd1-g1 Nb5-d6 Rh3-h7 Nd6-f5 Bf3-g4 Bc6-d7 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Bf2-e3 f5-f4 Rg7-h7+ Kh8-g8 Be3xf4 Bd7-f5 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Rg7-h7+
18/36 01:38 386,103 3,933 +1,64 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rd1-g1 Nb5-d6 Rh3-h7 Nd6-f5 Bf3-g4 Bc6-d7 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Bf2-e3 f5-f4 Rg7-h7+ Kh8-g8 Be3xf4 Bd7-f5 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Rg7-h7+
18/38 01:47 421,805 3,906 +1,57 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rd1-g1 Nb5-d6 Rh3-h7 Nd6-f5 Bf3-g4 Bc6-d7 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Bf2-e3 f5-f4 Rg7-h7+ Kh8-g8 Be3xf4 Bd7-f5 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Rg7-h7+
18/38 01:52 446,834 3,955 +1,62 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rh3-h7 Nb5xc3 Rh7-g7+ Kg8-h8 Rd1-g1 Nc3-e4 Bf3xe4 d5xe4 Rg1-g4 e4-e3+ Kh1-g1 Qb6xd4 Rg4xd4 Bc6-f3 Ng5xf3 e3xf2+ Kg1xf2 g6-g5 Nf3xg5 c4-c3 Rd4-h4+
19/38 01:53 450,273 3,956 +1,61 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rh3-h7 Nb5xc3 Rh7-g7+ Kg8-h8 Rd1-g1 Nc3-e4 Bf3xe4 d5xe4 Rg1-g4 e4-e3+ Kh1-g1 Qb6xd4 Rg4xd4 Bc6-f3 Ng5xf3 e3xf2+ Kg1xf2 g6-g5 Nf3xg5 c4-c3 Rd4-h4+
19/39 01:54 454,590 3,965 +1,60 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rh3-h7 Nb5xc3 Rh7-g7+ Kg8-h8 Rd1-g1 Nc3-e4 Bf3xe4 d5xe4 Rg1-g4 e4-e3+ Kh1-g1 Qb6xd4 Rg4xd4 Bc6-f3 Ng5xf3 e3xf2+ Kg1xf2 g6-g5 Nf3xg5 c4-c3 Rd4-h4+
19/40 01:55 457,169 3,964 +1,60 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rh3-h7 Nb5xc3 Rh7-g7+ Kg8-h8 Rd1-g1 Nc3-e4 Bf3xe4 d5xe4 Rg1-g4 e4-e3+ Kh1-g1 Qb6xd4 Rg4xd4 Bc6-f3 Ng5xf3 e3xf2+ Kg1xf2 g6-g5 Nf3xg5 c4-c3 Rd4-h4+
19/41 01:55 459,876 3,972 +1,59 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rh3-h7 Nb5-d6 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Rd1-g1 Nd6-f5 Rg7-h7+ Kh8-g8 Bf3-g4 Bc6-d7 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rg1-g3 f5-f4 Rh7-g7+ Kg8-h8 Rg3-f3 Bd7-g4
19/42 01:58 475,797 4,014 +1,53 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rh3-h7 Nb5-d6 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Rd1-g1 Nd6-f5 Rg7-h7+ Kh8-g8 Bf3-g4 Bc6-d7 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Bf2-e3 f5-f4 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8
19/43 01:58 477,853 4,017 +1,53 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rh3-h7 Nb5-d6 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rh7-g7+ Kg8-h8 Rd1-g1 Nd6-f5 Rg7-h7+ Kh8-g8 Bf3-g4 Bc6-d7 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Bf2-e3 f5-f4 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8
19/43 02:03 497,696 4,015 +1,48 Qf4-f6+ Be7xf6 g5xf6+ Kg7-g8 Nf3-g5 h7-h5 Be2xh5 Nc2xa3 Be1-f2 Rb8-b7 Bh5-f3 Na3-b5 Rh3-h7 Nb5-d6 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Rd1-g1 Nd6-f5 Bf3-g4 Bc6-d7 Bg4xf5 e6xf5 Rh7-g7+ Kg8-h8 Rg7-h7+ Kh8-g8 Kh1-g2 f5-f4 Kg2-f3 Bd7-f5 Rh7-g7+

And yet someone posted here that all strong moves discovered by Lc0 can be discovered by SF too.
This proves them wrong.

After analyzing many engine engine games, I saw many difficult moves made by Lc0 which can't be considered by SF too.
But that's a different story and would warrant openning a different thread. Exciting times.
Last edited by MikeGL on Tue Oct 01, 2019 1:04 pm, edited 1 time in total.
I told my wife that a husband is like a fine wine; he gets better with age. The next day, she locked me in the cellar.

Vinvin
Posts: 4766
Joined: Thu Mar 09, 2006 8:40 am
Full name: Vincent Lejeune

Re: Is there a difficult EPD file with test positions

Post by Vinvin » Tue Oct 01, 2019 1:02 pm

MikeGL wrote:
Tue Oct 01, 2019 12:37 pm
Vinvin wrote:
Tue Oct 01, 2019 12:11 pm
mclane wrote:
Sun Sep 29, 2019 11:55 am
That are difficult even for todays engines ?
E.g. if we want to test LC0 or Stockfish versions by a test suite, we would need a stronger test suite because they search
Very deep and todays computers are very fast.

Please a few difficult New epd Test suites.
Thorsten, here are the 48 hardest (for the recent Stockfish) positions from my Hard-Talkchess-2020 set.
I hope someone will run this subset with a fast 16 cores, 1 hour per position.

Code: Select all

1k6/3p4/1B6/4Pp1p/1p5R/1p4p1/pP3n2/K6n w - - bm Rxh1;                                 
1nb3rr/2pp3p/p1k2P2/n1q1PN2/P1pR3N/b4PBp/1R2P3/1KQ5 w - - bm Rd6+;                    
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+;              
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - bm Rxb3+;                        
1rb4k/p5np/3p1rp1/1ppB4/2N2P2/1P2R1P1/P1P4P/4R1K1 w - - bm Re8+;                      
2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - bm Nd6+;                          
2bqrr1k/p5b1/1p1p2pp/nPpBp3/P1P1N2P/3PN1P1/R4P1K/3Q1R2 w - - bm Nc3;                  
2r2r1k/qb3p1p/p2p1Np1/np1Pp1P1/2P5/3RP2P/5R2/4Q1K1 w - - bm Rf4;                      
3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PPB5/8 w - - bm Ba4+;                      
3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - bm Nd4;                                    
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4;                                     
4R3/P7/2bB2p1/r3pk2/2p2p1P/2P2P1K/6P1/8 w - - bm Rxe5+;                               
4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8 w - - bm a8=B;                                     
4k1br/1K1p1n1r/2p2pN1/P2p1N2/2P3pP/5B2/P2P4/8 w - - bm Kc8;                           
4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - bm Qxe5;                             
4r1k1/1r1np3/1pqp1ppB/p7/2b1P1PQ/2P2P2/P3B2R/3R2K1 w - - bm Bg5;                      
6br/1KNp1n1r/2p2p2/P1ppRP2/1kP3pP/3PBB2/PN1P4/8 w - - bm Bxc5+;                       
7k/4PBNp/7P/2p5/2P5/2rq2Pp/1P3P1K/8 b - - bm Qxg3+;                                   
8/2N4r/1p3pkp/8/5K1p/2P4N/P3Bn2/8 w - - bm Bh5+;                                      
8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - bm Nf6+;                                 
N7/8/2KQ2rp/6k1/3p3p/2p4P/4PP2/5N2 w - - bm f4+;                                      
qrb5/b1Pp3p/1pkB4/1p2P3/1P1KPp2/R4P1p/P3pP1P/4N1n1 w - - bm Rc3+;                     
r1b2rk1/2q1bppp/p2pp3/2n3PQ/1p1BP3/1BN5/PPP2P1P/2KR2R1 w - - bm Bf6;                  
r1b2rk1/pp3ppp/1n2p3/3pP3/2P2B2/b1PB1qP1/P1Q1NP1P/1K1R3R w - - bm Nd4;                
r2qrbk1/1b3p2/3p2pB/1p1P1N2/1np1P3/5NRP/1P3PP1/1B1Qn1K1 w - - bm N3h4;                
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+;                  
rn3r1k/pn1p1ppq/bpp4p/7P/4N1Q1/6P1/PP3PB1/R1B1R1K1 w - - bm Bg5;                      
rnb2rk1/1pq1bppp/p3p3/2npP1P1/3N1P2/2NBB3/PPP4P/R2QK2R w KQ - bm Bxh7+;               
rnbq1rk1/p3bp2/2p1p1p1/1p1nP1P1/2pP1P2/2N5/PP4P1/RBBQK2R w KQ - bm Bd2;               
r1qn1rk1/p1pp1ppp/1p2p2b/1P2P3/P7/R2B1N2/1P4PP/3Q1R1K w - - bm Bxh7+;                 
r4rk1/pb3pp1/1p1qpR2/2ppN3/3P4/2P4P/PP1pQ1P1/3R2K1 w - - bm Qxd2 Ng4;                 
Nq3n1k/8/P1p2Npp/2Kp3R/pp6/n3p3/8/4Q3 w - - bm Nc7;                                   
r7/1q1r1p1k/3p1Qpp/pbpP4/1nB1P1P1/1P3NBP/5P1K/4R3 w - - bm Bf4;                       
r2q1r2/1b2bpkp/n3p1p1/2ppP1P1/p6R/1PN1BQR1/NPP2P1P/4K3 w - - bm Qf6+;                 
5rk1/pp3p1p/7b/2pR4/8/2P4P/P1PNr1P1/2K4R b - - bm Rxd2;                               
4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - - bm Qd8;                                  
1B1r4/rp2npkp/2b1pbp1/1qp5/nPN1R3/1P1P1QP1/2P2PBP/5R1K w - - bm Qxf6+;                
7q/b1p5/1p1Npkb1/pPP2ppP/P1P5/3B2P1/5P1R/K3R3 w - - bm hxg6;                          
8/1B3b1p/7P/p2p4/P2pp1kp/Q7/1N1Pq2P/7K w - - bm Qh3+;                                 
1r3rk1/5p1p/p2pb1p1/3Np1P1/2pRPR2/qP2Q1N1/P1PK3P/8 w - - bm Nf5;                      
r1bq1b1r/pp1pp1pp/2n1k3/8/4nQ2/N1p1BN1P/PP3PP1/R3K2R w KQ - bm Nb5;                   
3nn3/2p2p1k/1p1pp1p1/p2B3p/r2B2N1/4P2N/3PKPP1/6q1 w - - bm Ng5+;                      
r4rk1/1bq1bppp/p1npp3/2nB1NP1/1p2P3/2N1B3/PPP1QP1P/2KR2R1 w - - bm Qh5;               
r1b1qk1r/pn3pp1/1p2p3/3pP1Bp/1bPN4/4Q1R1/P2N1PP1/R5K1 w - - bm Bf6;                   
8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - bm Ng2;                                 
r1br2k1/1p1nqppp/p1p1pn2/3p4/1bPP4/PPN1PN2/2BB1PPP/R2Q1RK1 b - - am Bxa3;             
5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - bm c8=N;                                  
8/bp4Pk/4KB2/R6p/2pNp1P1/p7/3p1Pnq/2r5 w - - bm Nc6;                                  


The third positiion with bm Qf6+! is quickly solved by Lc0 in less than 1 second.
see here viewtopic.php?f=2&t=54487&start=120#p771848

And yet someone posted here that all strong moves discovered by Lc0 can be discovered by SF too.
This proves them wrong.
Yes, a lot of this positions are easy for other engines.
I don't know why Stockfish is stuck sometimes.

jp
Posts: 1405
Joined: Mon Apr 23, 2018 5:54 am

Re: Is there a difficult EPD file with test positions

Post by jp » Tue Oct 01, 2019 1:22 pm

MikeGL wrote:
Tue Oct 01, 2019 12:37 pm
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+;
The third positiion with bm Qf6+! is quickly solved by Lc0 in less than 1 second.
So (if it really is the bm) at what depths do all the AB engines fail to find it?


MikeGL wrote:
Tue Oct 01, 2019 12:37 pm
After analyzing many engine engine games, I saw many difficult moves made by Lc0 which can't be considered by SF too.
But that's a different story and would warrant openning a different thread.
Please start the thread.
Last edited by jp on Tue Oct 01, 2019 1:26 pm, edited 2 times in total.

MikeGL
Posts: 962
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Re: Is there a difficult EPD file with test positions

Post by MikeGL » Tue Oct 01, 2019 1:25 pm

What's funny is that almost all alpha-beta engines can't find this Qf6+! move but easy for an NN type.
Even funnier when someone like Lyudmil claimed it will take more than 20 years of
technological advancement before computer engines can solve this types of positions.
I told my wife that a husband is like a fine wine; he gets better with age. The next day, she locked me in the cellar.

zullil
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Location: PA USA
Full name: Louis Zulli

Re: Is there a difficult EPD file with test positions

Post by zullil » Sat Oct 05, 2019 9:40 am

MikeGL wrote:
Tue Oct 01, 2019 12:37 pm


The third positiion with bm Qf6+! is quickly solved by Lc0 in less than 1 second.
see here viewtopic.php?f=2&t=54487&start=120#p771848

And yet someone posted here that all strong moves discovered by Lc0 can be discovered by SF too.
This proves them wrong.

After analyzing many engine engine games, I saw many difficult moves made by Lc0 which can't be considered by SF too.
But that's a different story and would warrant opening a different thread. Exciting times.
Stockfish-dev does find Qf6+ and a winning continuation. It doesn't do so quickly. :D

info depth 56 seldepth 99 multipv 1 score cp 0 nodes 209495868950 nps 33720236 hashfull 1000 tbhits 0 time 6212764 pv f4f6 e7f6 g5f6 g7g8 f3g5 h7h5 e1f2 c2b4 a3b4 a4a3 b2a3 b8b7 e2h5 b6a7 h5g4 a7a3 h3h7 f8b8 d1f1 b3b2 h7g7 g8f8 g4e6 f7e6 g5e6 f8e8 f2h4 b2b1r f1b1 b7g7 f6g7 e8f7 b1f1 f7e6 f1f6 e6d7 e5e6 d7d6 f6f8 a3c3 f8b8 c3c1 h1g2 c1c2 h4f2 c2e4 g2g3 e4d3 g3h4 d3e4

and eventually

info depth 69 seldepth 183 multipv 1 score cp 392 nodes 1310302373631 nps 37939606 hashfull 1000 tbhits 0 time 34536530 pv f4f6 e7f6 g5f6 g7g8 e1d2 b6a5 d2h6 a5c3 b2c3 b3b2 h6f8 b8f8 d1b1 f8b8 f3g5 c2a3 h3h7 c6e8 h7g7 g8h8 b1b2 b8b2 g7h7 h8g8 e2g4 a3c2 g4e6 f7e6 h7g7 g8h8 g7a7 b2b8 g5e6 c2e1 h2h3 e1f3 h1g2 f3h4 g2f2 h8g8 e6g5 b8b2 f2g3 h4f5 g3f3 b2b1 f3f2 b1b2 f2e1 b2b1 e1d2 b1f1 h3h4 g8f8 g5e6 f8g8 a7a8 g8f7 e6g5 f7f8 f6f7 f5g7 f7e8q g7e8 a8a4 f1f2 d2e1 f2h2 a4a7 e8g7 g5h7 f8g8 h7f6 g8f8 f6d5 g7e6 d5f6 e6f4 e1d1 h2f2 d4d5 f4d3 a7a8 f8g7 f6g4 d3b2 d1c1 b2d3 c1b1 f2b2 b1a1 b2g2 d5d6 g2g1 a1a2 d3c1 a2b1 c1d3 b1c2 g1g2 c2d1 d3b2 d1e1 g2g1 e1d2 g1g2 d2e3 g2g4 d6d7 b2d1 e3d2

MikeGL
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Re: Is there a difficult EPD file with test positions

Post by MikeGL » Sun Oct 06, 2019 1:35 am

zullil wrote:
Sat Oct 05, 2019 9:40 am

Stockfish-dev does find Qf6+ and a winning continuation. It doesn't do so quickly. :D

info depth 56 seldepth 99 multipv 1 score cp 0 nodes 209495868950 nps 33720236 hashfull 1000 tbhits 0 time 6212764 pv f4f6 e7f6 g5f6 g7g8 f3g5 h7h5 e1f2 c2b4 a3b4 a4a3 b2a3 b8b7 e2h5 b6a7 h5g4 a7a3 h3h7 f8b8 d1f1 b3b2 h7g7 g8f8 g4e6 f7e6 g5e6 f8e8 f2h4 b2b1r f1b1 b7g7 f6g7 e8f7 b1f1 f7e6 f1f6 e6d7 e5e6 d7d6 f6f8 a3c3 f8b8 c3c1 h1g2 c1c2 h4f2 c2e4 g2g3 e4d3 g3h4 d3e4

and eventually

info depth 69 seldepth 183 multipv 1 score cp 392 nodes 1310302373631 nps 37939606 hashfull 1000 tbhits 0 time 34536530 pv f4f6 e7f6 g5f6 g7g8 e1d2 b6a5 d2h6 a5c3 b2c3 b3b2 h6f8 b8f8 d1b1 f8b8 f3g5 c2a3 h3h7 c6e8 h7g7 g8h8 b1b2 b8b2 g7h7 h8g8 e2g4 a3c2 g4e6 f7e6 h7g7 g8h8 g7a7 b2b8 g5e6 c2e1 h2h3 e1f3 h1g2 f3h4 g2f2 h8g8 e6g5 b8b2 f2g3 h4f5 g3f3 b2b1 f3f2 b1b2 f2e1 b2b1 e1d2 b1f1 h3h4 g8f8 g5e6 f8g8 a7a8 g8f7 e6g5 f7f8 f6f7 f5g7 f7e8q g7e8 a8a4 f1f2 d2e1 f2h2 a4a7 e8g7 g5h7 f8g8 h7f6 g8f8 f6d5 g7e6 d5f6 e6f4 e1d1 h2f2 d4d5 f4d3 a7a8 f8g7 f6g4 d3b2 d1c1 b2d3 c1b1 f2b2 b1a1 b2g2 d5d6 g2g1 a1a2 d3c1 a2b1 c1d3 b1c2 g1g2 c2d1 d3b2 d1e1 g2g1 e1d2 g1g2 d2e3 g2g4 d6d7 b2d1 e3d2
On your post above with a powerful multi-core CPU, after 1hr 42mins SF dev still thinks it is a draw.

You mean only after 9hrs 59mins did it consider the win or earlier than 9hrs?
But nevermind, thats still cool and impressive if SF-dev really did find this Qf6+!! move of Lydmil T.
I told my wife that a husband is like a fine wine; he gets better with age. The next day, she locked me in the cellar.

jp
Posts: 1405
Joined: Mon Apr 23, 2018 5:54 am

Re: Is there a difficult EPD file with test positions

Post by jp » Sun Oct 06, 2019 1:56 am

MikeGL wrote:
Sun Oct 06, 2019 1:35 am
On your post above with a powerful multi-core CPU, after 1hr 42mins SF dev still thinks it is a draw.

You mean only after 9hrs 59mins did it consider the win or earlier than 9hrs?
Louis's "powerful multi-core CPU" orders Qf6+ first choice by depth 51 or earlier, though in what time and with what score (probably still negative) I don't know.

It looks like its eval goes positive (from 0) after 8 hours 16 mins, and winning (>+2.5) after 8 hours 25 mins.

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