Arasan 19.0 + updated test suite

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Sylwy
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Joined: Fri Apr 21, 2006 4:19 pm
Location: IAȘI - the historical capital of MOLDOVA
Full name: Silvian Rucsandescu

Re: Arasan 19.0 + updated test suite

Post by Sylwy »

Krzysztof Grzelak wrote:What kind of error you are writing and under what GUI. I did a test program ChessGUI with syzygy probe depth =6. The program does not show any error.
They are two different parameters here: ProbeLimit & ProbeDepth ! See please the explanations of Syzygy Bases author - Mr.Ronald de Man.
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Vinvin
Posts: 5349
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Arasan 19.0 + updated test suite

Post by Vinvin »

Results with latest SF on the previous 44 unsolved positions. 90 seconds per position :

Code: Select all

Analyzing engine: Stockfish_16050620_x64_modern
08/05/16 01:51:34 Level: 90 Seconds
   Use seconds per move      : 90 Seconds per move
   Analysis Lines            : Minimum search depth=12
   Activate abort analysis   : True. Minimal analysis depth 22. Abort, if the correct move is held 3 additional ply

  1) g2-g4              g2-g4   * 26 Seconds
  2) Bg5-d8             Bg5-d8  * 11 Seconds
  3) .. Rf6-f3          Rf6-f3  * 26 Seconds
  4) Nf3xg5             Nf3xg5  * 64 Seconds
  5) Be3-h6             Be3-h6  * 35 Seconds
  6) Qd2-f4             Qd2-f4  * 30 Seconds
  7) Qg5-h6             Qg5-h6  * 83 Seconds
  8) Bg5-f6             Bg5-f6  * 27 Seconds
  9) f5-f6              c6-c7    
 10) Bd3xh7             Bf4-e3   
 11) .. Ne8-c7          Ne8-f6   
 12) g2-g3              g2-g3   * 3 Seconds
 13) Rh5xg5             a2-a4    
 14) Nd4-b5             Nd4-b5  * 10 Seconds
 15) Rg5xg7             Rg5xg7  * 25 Seconds
 16) Bb1xh7             Nc3-e4   
 17) Rf3-f6             Rf3-f2   
 18) Bd3xh7             Rf1-h1   
 19) g4-g5              a2-a4    
 20) Qf2-g3             Qf2-g3  * 4 Seconds
 21) Nf4-d3             h4xg5    
 22) .. Bb7-d5, ...     Qc7-a5   
 23) Ng3-h5             Kf1-g2   
 24) b2-b4              Bd4-g1   
 25) .. Re3xf3          Rf6-h6   
 26) Rf1-c1             Ba6-e2   
 27) Re1-e5             c3-c4    
 28) Qc4xc8             Qc4xc8  * 47 Seconds
 29) Qf3-f6             Nc3-e2   
 30) Rf1xf6             Bd4-a7   
 31) .. Qg5xg3          Be6xa2   
 32) e4-e5              e4-e5   * 24 Seconds
 33) Rg1xg7             Qh4-f6   
 34) .. Bd7-h3          Bg7-h6   
 35) Bd3xh7             Bd3xh7  * 55 Seconds
 36) .. b4-b3           b4-b3   * 1 Second
 37) Bf1-e2             Bf1-e2  * 85 Seconds
 38) Bb4xe7             Bb4xe7  * 72 Seconds
 39) Kg1-f2, ...        Ra1-e1   
 40) Ne4-g5             Ne4-g5  * 34 Seconds
 41) Nd4-c6             Nd4-c6  * 5 Seconds
 42) h5-h6              h5-h6   * 20 Seconds
 43) f3-f4              Ke8-d7   
 44) b3-b4              b3-b4   * 21 Seconds
22 of 44 matching moves
08/05/16 02:47:46, Total time: 00:56:12 Rated time: 44:48 = 2688 Seconds
Vinvin wrote:Arasan Testsuite V19 with SF on an i7-6*4GHz+Syzygy : 156 found on 200.

Solution not found for :

Code: Select all

r2q3r/1p1bbQ2/4p1Bk/3pP3/1n1P1P1p/pP6/Pn4PP/R1B1R1K1 w - - bm g4; id "arasan19.10"; c0 "Fier-Ryan, Sabadell op 2009";
1rb2k1r/2q2pp1/p2b3p/2n3B1/2QN4/3B4/PpP3PP/1K2R2R w - - bm Bd8; id "arasan19.12"; c0 "Volokitin-Mamedyarov, EU Club Cup Eilat ISR 2012";
5rk1/1pp3p1/3ppr1p/pP2p2n/4P2q/P2PQ2P/2P1NPP1/R4RK1 b - - bm Rf3; id "arasan19.13"; c0 "Arasan-Crafty, test game 2012";
rn1q1rk1/2pbb3/pn2p3/1p1pPpp1/3P4/1PNBBN2/P1P1Q1PP/R4R1K w - - bm Nxg5; id "arasan19.16"; c0 "Dann Corbit, CCC 2015";
3q1rk1/pr1b1p1p/1bp2p2/2ppP3/8/2P1BN2/PPQ3PP/R4RK1 w - - bm Bh6; id "arasan19.20"; c0 "Shredder-Rybka, WCCC 2006";
r5n1/p1p1q2k/4b2p/3pB3/3PP1pP/8/PPPQ2P1/5RK1 w - - bm Qf4; id "arasan19.23"; c0 "Shulman-Marciano, Ubeda 1997";
r2q1rk1/ppp2p2/3p1np1/4pNQ1/4P1pP/1PPP4/1P3P2/R3K1R1 w Q - bm Qh6; id "arasan19.34"; c0 "Morella-Fernandez, Cuba 1998";
r4rk1/p4ppp/qp2p3/b5B1/n1R5/5N2/PP2QPPP/1R4K1 w - - bm Bf6; id "arasan19.38"; c0 "Alekhine-Sterk, Budapest 1921";
2b1rk2/5p2/p1P5/2p2P2/2p5/7B/P7/2KR4 w - - bm f6; id "arasan19.41"; c0 "study by Smyslov";
rn1qr1k1/1p2bppp/p3p3/3pP3/P2P1B2/2RB1Q1P/1P3PP1/R5K1 w - - bm Bxh7+; id "arasan19.42"; c0 "Polugaevsky-Torre, London 1984";
q3nrk1/4bppp/3p4/r3nPP1/4P2P/NpQ1B3/1P4B1/1K1R3R b - - bm Nc7; id "arasan19.52"; c0 "Karjakin-Anand, Corus Wijk aan Zee 2006";
r1b2rk1/pp1p2pR/8/1pb2p2/5N2/7Q/qPPB1PPP/6K1 w - - bm g3; id "arasan19.59"; c0 "Rybka-Shredder, WCCCC Pamplona Openclass 2009";
5rk1/8/pqPp1r1p/1p1Pp1bR/4B3/5PP1/PP2Q1K1/R7 w - - bm Rxg5+; id "arasan19.61"; c0 "sedarpi-noamgmi, www.chesspresso.net 2014";
2k1r2r/1pqb1p2/p2pp2b/4n1p1/PQ1NP2p/1P3P1P/2P1NBP1/R4RK1 w - - bm Nb5; id "arasan19.71"; c0 "Pacificrabbit (Rybka 3)-Anarquia69 (Rybka 3), playchess.com 2009";
r4rk1/pp1qbppp/1n6/6R1/P1pP4/5Q1P/2B2PP1/2B2RK1 w - - bm Rxg7+; id "arasan19.75"; c0 "Anand-Adams, Oakham 1990";
1qrrbbk1/1p1nnppp/p3p3/4P3/2P5/1PN1N3/PB2Q1PP/1B2RR1K w - - bm Bxh7; id "arasan19.77"; c0 "Georgiev-Ionescu, UAE 1986";
r3r2k/1pq2pp1/4b2p/3pP3/p1nB3P/P2B1RQ1/1PP3P1/3R3K w - - bm Rf6; id "arasan19.91"; c0 "Houdini 1.5-Rybka 4, Pal Larkin 2011";
1r3rk1/3bbppp/1qn2P2/p2pP1P1/3P4/2PB1N2/6K1/qNBQ1R2 w - - bm Bxh7+; id "arasan19.96"; c0 "nick-Fritz 11, playchess.com 2011";
1r2r1k1/2R2p2/1N1Rp2p/p2b3P/4pPP1/8/P4K2/8 w - - bm g5; id "arasan19.99"; c0 "ENGINEMASTER-Arasan, ICC 2015";
2b2qk1/1r4pp/2p1p3/p2n1PPB/2p4P/2p5/P4Q2/4RRK1 w - - bm Qg3; id "arasan19.106"; c0 "Lafarga Santorromán-Kukk, ICCF Olympiad 17 Final 2009";
8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - bm Nd3; id "arasan19.116"; c0 "Grandelius-Raznikov, EU Youth Chess Ch B18, Albena 2011";
6k1/1bq1bpp1/p6p/2p1pP2/1rP1P1P1/2NQ4/2P4P/K2RR3 b - - bm Bd5; id "arasan19.117"; c0 "Hard CCC 2008 #6 (Vincent Lejeune)";
4rrk1/1pp1n1pp/1bp1P2q/p4p2/P4P2/3R2N1/1PP2P1P/2BQRK2 w - - bm Nh5; id "arasan19.119"; c0 "Ruy Lopez position (posted by Neel Basant)";
3q4/4k3/1p1b1p1r/p2Q4/3B1p1p/7P/1P4P1/3R3K w - - bm b4; id "arasan19.120"; c0 "Stockfish 021113-Naum 4.6, nTCEC - Stage 4 - Season 2 2013";
7k/3q1pp1/1p3r2/p1bP4/P1P2p2/1P2rNpP/2Q3P1/4RR1K b - - bm Rxf3; id "arasan19.122"; c0 "Darkraider (Stockfish 2.1.1JA)-Pastorale(Houdini 1.5a), playchess.com 2011";
3r3r/k1p2pb1/B1b2q2/2RN3p/3P2p1/1Q2B1Pn/PP3PKP/5R2 w - - bm Rfc1; id "arasan19.123"; c0 "Naum 4.2 MP-Deep Hiarcs 13.2, SSDF 2011";
r1b3kr/pp1n2Bp/2pb2q1/3p3N/3P4/2P2Q2/P1P3PP/4RRK1 w - - bm Re5; id "arasan19.124"; c0 "Orcrist-Crafty, ICC 2011";
1nr3k1/q4rpp/1p1p1n2/3Pp3/1PQ1P1b1/4B1P1/2R2NBP/2R3K1 w - - bm Qxc8+; id "arasan19.129"; c0 "Runting-Barnsley, Purdy Jubilee-A email 2003";
r2q1r2/1b2bpkp/p3p1p1/2ppP1P1/7R/1PN1BQR1/1PP2P1P/4K3 w - - bm Qf6+; id "arasan19.132"; c0 "Asauskas-Malisauskas, Vilnius 2004";
1rr1b1k1/1pq1bp2/p2p1np1/4p3/P2BP3/2NB2Q1/1PP3PP/4RR1K w - - bm Rxf6; id "arasan19.134"; c0 "Glek-Lingnau, Dortmund op-A 1992";
3r1r1k/pp5p/4b1pb/6q1/3P4/4p1BP/PP2Q1PK/3RRB2 b - - bm Qxg3+; id "arasan19.137"; c0 "Apicella-Lautier, Clichy 2001";
r2qrb1k/1p1b2p1/p2ppn1p/8/3NP3/1BN5/PPP3QP/1K3RR1 w - - bm e5; id "arasan19.147"; c0 "Spassky-Petrosian, World Chmp (19) 1969";
1r1rb1k1/5ppp/4p3/1p1p3P/1q2P2Q/pN3P2/PPP4P/1K1R2R1 w - - bm Rxg7+; id "arasan19.155"; c0 "Vescovi-Gschwendtner, Groningen op 1994 (Aemis Test Suite #30)";
r6k/N1Rb2bp/p2p1nr1/3Pp2q/1P2Pp1P/5N2/P3QBP1/4R1K1 b - - bm Bh3; id "arasan19.158"; c0 "Persson-Gerhardt, Simon Webb mem email 2007";
r1b2rk1/1pq1nppp/pbn1p3/8/3N4/3BBN2/PPP1QPPP/3R1RK1 w - - bm Bxh7+; id "arasan19.159"; c0 "Leu-Muck, DDR-ch H137 corr 1973";
5r2/3rkp2/2R2p2/p2Bb2Q/1p2P2P/4q1P1/Pp6/1K1R4 b - - bm b3; id "arasan19.169"; c0 "Hotmorphy (Deep Shredder 9)-Mr Blue Sky (HIARCS 12), playchess.com 2012";
r1b1k1r1/1p2np1p/p1n1pQp1/3p4/3NPP2/P2RB3/2PK2PP/q4B1R w q - bm Be2; id "arasan19.171"; c0 "Deep Junior 13.3 x64-Komodo 1176.00 x64 2014 (Clemens Keck)";
2r1k2r/pp1bb1pp/6n1/3Q1p2/1B1N4/P7/1q4PP/4RRK1 w k - bm Bxe7; id "arasan19.173"; c0 "Hannibal-Arasan, Variant-ICS, Amsterdam, NL 2013";
r1b3r1/5p1k/p1n2P1p/P1qpp1P1/1p1p4/3P2Q1/BPPB2P1/R4RK1 w - - bm Kf2; id "arasan19.179"; c0 "Efremov-Fischer, Danube/4 ICCF 2012";
r1qr1bk1/2p2pp1/ppn1p2p/8/1PPPN1nP/P4NP1/2Q2PK1/2BRR3 w - - bm Neg5; id "arasan19.184"; c0 "sedarpi-tazzzzz, www.chesspresso.net 2014";
r1b2r1k/4qp1p/p2ppb1Q/4nP2/1p1NP3/2N5/PPP4P/2KR1BR1 w - - bm Nc6; id "arasan19.185"; c0 "Kholmov-Bronstein, URS-ch32 Kiev 1964";
8/4bBpp/3p4/P6P/2PN2p1/3k1b2/P7/6K1 w - - bm h6; id "arasan19.188"; c0 "Timman, 1c Corus {m} 2008";
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4; id "arasan19.189"; c0 "Šachová skladba 2011-12, 1st Prize";
8/k3qrpR/1p1p4/p2QpPp1/P1P1P1K1/1P6/8/8 w - - bm b4; id "arasan19.191"; c0 "Keres-Euwe, Netherlands (m/6) 1940";
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Paloma
Posts: 1243
Joined: Thu Dec 25, 2008 9:07 pm
Full name: Herbert L

Re: Arasan 19.0 + updated test suite

Post by Paloma »

1) What Hashsize was used by SF?

2) why are the three dot's after

* 22) .. Bb7-d5, ...
* 39) Kg1-f2, ...
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Vinvin
Posts: 5349
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Arasan 19.0 + updated test suite

Post by Vinvin »

Paloma wrote:1) What Hashsize was used by SF?
8 GB
Paloma wrote: 2) why are the three dot's after

* 22) .. Bb7-d5, ...
* 39) Kg1-f2, ...
Probably a bug in Arena for the EPD decoding.
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Vinvin
Posts: 5349
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Arasan 19.0 + updated test suite

Post by Vinvin »

And now the 22 unsolved positions with the latest SF (6*4GHz, 8 GB hash, 6 pcs Syzygy), 15 minutes per positions, 2 runs : 14/22 and 16/22.

Code: Select all

Analyzing engine: Stockfish_16050620_x64_modern
   Use seconds per move      : 900 Seconds per move
   Analysis Lines            : Minimum search depth=12
   Activate abort analysis   : True. Minimal analysis depth 22. Abort, if the correct move is held 3 additional ply

  1) f5-f6              c6-c7    
  2) Bd3xh7             Bd3xh7  * 809 Seconds
  3) .. Ne8-c7          Ne8-c7  * 167 Seconds
  4) Rh5xg5             Rh5xg5  * 80 Seconds
  5) Bb1xh7             Bb1xh7  * 16 Seconds
  6) Rf3-f6             Rf3-f6  * 95 Seconds
  7) Bd3xh7             Bd3xh7  * 417 Seconds
  8) g4-g5              g4-g5   * 144 Seconds
  9) Nf4-d3             h4xg5    
 10) .. Bb7-d5, ...     Bb7-d5  * 47 Seconds
 11) Ng3-h5             Ng3-h5  * 60 Seconds
 12) b2-b4              Bd4-g1   
 13) .. Re3xf3          Rf6-h6   
 14) Rf1-c1             Rf1-c1  * 27 Seconds
 15) Re1-e5             c3-c4    
 16) Qf3-f6             Qf3-f6  * 594 Seconds
 17) Rf1xf6             Bd4-a7   
 18) .. Qg5xg3          Qg5xg3  * 107 Seconds
 19) Rg1xg7             Rg1xg7  * 240 Seconds
 20) .. Bd7-h3          Bg7-h6   
 21) Kg1-f2, ...        Kg1-f2  * 450 Seconds
 22) f3-f4              Ke8-d7   
14 of 22 matching moves

  1) f5-f6              c6-c7    
  2) Bd3xh7             Bd3xh7  * 242 Seconds
  3) .. Ne8-c7          Ne8-c7  * 72 Seconds
  4) Rh5xg5             Rh5xg5  * 238 Seconds
  5) Bb1xh7             Bb1xh7  * 91 Seconds
  6) Rf3-f6             Rf3-f6  * 139 Seconds
  7) Bd3xh7             Rf1-h1   
  8) g4-g5              g4-g5   * 124 Seconds
  9) Nf4-d3             h4xg5    
 10) .. Bb7-d5, ...     Bb7-d5  * 136 Seconds
 11) Ng3-h5             Ng3-h5  * 403 Seconds
 12) b2-b4              b2-b4   * 373 Seconds
 13) .. Re3xf3          Re3xf3  * 120 Seconds
 14) Rf1-c1             Rf1-c1  * 74 Seconds
 15) Re1-e5             c3-c4    
 16) Qf3-f6             Qf3-f6  * 549 Seconds
 17) Rf1xf6             Bd4-a7   
 18) .. Qg5xg3          Qg5xg3  * 263 Seconds
 19) Rg1xg7             Rg1xg7  * 336 Seconds
 20) .. Bd7-h3          Bd7-h3  * 280 Seconds
 21) Kg1-f2, ...        Kg1-f2  * 300 Seconds
 22) f3-f4              Ke8-d7   
16 of 22 matching moves
2b1rk2/5p2/p1P5/2p2P2/2p5/7B/P7/2KR4 w - - bm f6; id "arasan19.41"; c0 "study by Smyslov";
rn1qr1k1/1p2bppp/p3p3/3pP3/P2P1B2/2RB1Q1P/1P3PP1/R5K1 w - - bm Bxh7+; id "arasan19.42"; c0 "Polugaevsky-Torre, London 1984";
q3nrk1/4bppp/3p4/r3nPP1/4P2P/NpQ1B3/1P4B1/1K1R3R b - - bm Nc7; id "arasan19.52"; c0 "Karjakin-Anand, Corus Wijk aan Zee 2006";
5rk1/8/pqPp1r1p/1p1Pp1bR/4B3/5PP1/PP2Q1K1/R7 w - - bm Rxg5+; id "arasan19.61"; c0 "sedarpi-noamgmi, www.chesspresso.net 2014";
1qrrbbk1/1p1nnppp/p3p3/4P3/2P5/1PN1N3/PB2Q1PP/1B2RR1K w - - bm Bxh7; id "arasan19.77"; c0 "Georgiev-Ionescu, UAE 1986";
r3r2k/1pq2pp1/4b2p/3pP3/p1nB3P/P2B1RQ1/1PP3P1/3R3K w - - bm Rf6; id "arasan19.91"; c0 "Houdini 1.5-Rybka 4, Pal Larkin 2011";
1r3rk1/3bbppp/1qn2P2/p2pP1P1/3P4/2PB1N2/6K1/qNBQ1R2 w - - bm Bxh7+; id "arasan19.96"; c0 "nick-Fritz 11, playchess.com 2011";
1r2r1k1/2R2p2/1N1Rp2p/p2b3P/4pPP1/8/P4K2/8 w - - bm g5; id "arasan19.99"; c0 "ENGINEMASTER-Arasan, ICC 2015";
8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - bm Nd3; id "arasan19.116"; c0 "Grandelius-Raznikov, EU Youth Chess Ch B18, Albena 2011";
6k1/1bq1bpp1/p6p/2p1pP2/1rP1P1P1/2NQ4/2P4P/K2RR3 b - - bm Bd5; id "arasan19.117"; c0 "Hard CCC 2008 #6 (Vincent Lejeune)";
4rrk1/1pp1n1pp/1bp1P2q/p4p2/P4P2/3R2N1/1PP2P1P/2BQRK2 w - - bm Nh5; id "arasan19.119"; c0 "Ruy Lopez position (posted by Neel Basant)";
3q4/4k3/1p1b1p1r/p2Q4/3B1p1p/7P/1P4P1/3R3K w - - bm b4; id "arasan19.120"; c0 "Stockfish 021113-Naum 4.6, nTCEC - Stage 4 - Season 2 2013";
7k/3q1pp1/1p3r2/p1bP4/P1P2p2/1P2rNpP/2Q3P1/4RR1K b - - bm Rxf3; id "arasan19.122"; c0 "Darkraider (Stockfish 2.1.1JA)-Pastorale(Houdini 1.5a), playchess.com 2011";
3r3r/k1p2pb1/B1b2q2/2RN3p/3P2p1/1Q2B1Pn/PP3PKP/5R2 w - - bm Rfc1; id "arasan19.123"; c0 "Naum 4.2 MP-Deep Hiarcs 13.2, SSDF 2011";
r1b3kr/pp1n2Bp/2pb2q1/3p3N/3P4/2P2Q2/P1P3PP/4RRK1 w - - bm Re5; id "arasan19.124"; c0 "Orcrist-Crafty, ICC 2011";
r2q1r2/1b2bpkp/p3p1p1/2ppP1P1/7R/1PN1BQR1/1PP2P1P/4K3 w - - bm Qf6+; id "arasan19.132"; c0 "Asauskas-Malisauskas, Vilnius 2004";
1rr1b1k1/1pq1bp2/p2p1np1/4p3/P2BP3/2NB2Q1/1PP3PP/4RR1K w - - bm Rxf6; id "arasan19.134"; c0 "Glek-Lingnau, Dortmund op-A 1992";
3r1r1k/pp5p/4b1pb/6q1/3P4/4p1BP/PP2Q1PK/3RRB2 b - - bm Qxg3+; id "arasan19.137"; c0 "Apicella-Lautier, Clichy 2001";
1r1rb1k1/5ppp/4p3/1p1p3P/1q2P2Q/pN3P2/PPP4P/1K1R2R1 w - - bm Rxg7+; id "arasan19.155"; c0 "Vescovi-Gschwendtner, Groningen op 1994 (Aemis Test Suite #30)";
r6k/N1Rb2bp/p2p1nr1/3Pp2q/1P2Pp1P/5N2/P3QBP1/4R1K1 b - - bm Bh3; id "arasan19.158"; c0 "Persson-Gerhardt, Simon Webb mem email 2007";
r1b3r1/5p1k/p1n2P1p/P1qpp1P1/1p1p4/3P2Q1/BPPB2P1/R4RK1 w - - bm Kf2; id "arasan19.179"; c0 "Efremov-Fischer, Danube/4 ICCF 2012";
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4; id "arasan19.189"; c0 "Šachová skladba 2011-12, 1st Prize";
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Vinvin
Posts: 5349
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Arasan 19.0 + updated test suite

Post by Vinvin »

Summary.

5 crazy hard positions for SF :
2b1rk2/5p2/p1P5/2p2P2/2p5/7B/P7/2KR4 w - - bm f6; id "arasan19.41"; c0 "study by Smyslov";
8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - bm Nd3; id "arasan19.116"; c0 "Grandelius-Raznikov, EU Youth Chess Ch B18, Albena 2011";
r1b3kr/pp1n2Bp/2pb2q1/3p3N/3P4/2P2Q2/P1P3PP/4RRK1 w - - bm Re5; id "arasan19.124"; c0 "Orcrist-Crafty, ICC 2011";
1rr1b1k1/1pq1bp2/p2p1np1/4p3/P2BP3/2NB2Q1/1PP3PP/4RR1K w - - bm Rxf6; id "arasan19.134"; c0 "Glek-Lingnau, Dortmund op-A 1992";
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4; id "arasan19.189"; c0 "Šachová skladba 2011-12, 1st Prize";
6 very hard positions for SF :
1r3rk1/3bbppp/1qn2P2/p2pP1P1/3P4/2PB1N2/6K1/qNBQ1R2 w - - bm Bxh7+; id "arasan19.96"; c0 "nick-Fritz 11, playchess.com 2011";
3q4/4k3/1p1b1p1r/p2Q4/3B1p1p/7P/1P4P1/3R3K w - - bm b4; id "arasan19.120"; c0 "Stockfish 021113-Naum 4.6, nTCEC - Stage 4 - Season 2 2013";
7k/3q1pp1/1p3r2/p1bP4/P1P2p2/1P2rNpP/2Q3P1/4RR1K b - - bm Rxf3; id "arasan19.122"; c0 "Darkraider (Stockfish 2.1.1JA)-Pastorale(Houdini 1.5a), playchess.com 2011";
r2q1r2/1b2bpkp/p3p1p1/2ppP1P1/7R/1PN1BQR1/1PP2P1P/4K3 w - - bm Qf6+; id "arasan19.132"; c0 "Asauskas-Malisauskas, Vilnius 2004";
r6k/N1Rb2bp/p2p1nr1/3Pp2q/1P2Pp1P/5N2/P3QBP1/4R1K1 b - - bm Bh3; id "arasan19.158"; c0 "Persson-Gerhardt, Simon Webb mem email 2007";
r1b3r1/5p1k/p1n2P1p/P1qpp1P1/1p1p4/3P2Q1/BPPB2P1/R4RK1 w - - bm Kf2; id "arasan19.179"; c0 "Efremov-Fischer, Danube/4 ICCF 2012";
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jdart
Posts: 4441
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Arasan 19.0 + updated test suite

Post by jdart »

I have taken a somewhat unsystematic look at some of the more difficult or unclear ones:

I think this one:

r1q2k1r/ppp2ppp/4n3/3N4/2B5/3Q4/Pb3PPP/4RRK1 w - - bm Rxe6; id "arasan19.50"; c0 "Akopian-Ramaswamy, Gilbraltar Masters 2007";

is problematic because it looks like Re2 might be nearly as good as Rxe6 (but I am not sure).

This one:

8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - bm Nd3; id "arasan19.156"; c0 "Grandelius-Raznikov, EU Youth Chess Ch B18, Albena 2011";

is very hard but the solution is correct. Komodo just does not seem to see it but if you force Nd3 then all of a sudden it gives a big score

2r2rk1/1b2bppn/1qp1p2p/p5N1/PpBPP2P/1P6/1BQ2PP1/1K1R3R w - - bm f4; id "arasan19.75"; c0 "Goloschapov-Skatchkov, Moscow 2004";

f4 is good but I am not sure it beats out all the alternatives by a large margin.

8/3n4/1p1k1p2/p5p1/PP4P1/2B3K1/8/8 b - - bm b5; id "arasan19.136"; c0 "Spassky-Karpov, Leningrad cm(6) 1974";

In my testing so far Stockfish prefers axb4 but Komodo likes b5.

r4rk1/p1p3pp/1pPppn1q/1P1b1p2/P2Pn3/4PN2/1B2BPPP/R2Q1RK1 b - - bm Ng4; id "arasan19.152"; c0 "Korchnoi-Simagin, Soviet ch-27 Leningrad 1960";

This one also seems murky at first but I actually ran it overnight with Komodo and it appears Ng4 is best.

The endgame studies are hard but I don't think they are incorrect, but there is some chance they are. Engines have a real hard time with these (probably due to null move but maybe due to other pruning they do).

--Jon
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jdart
Posts: 4441
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Arasan 19.0 + updated test suite

Post by jdart »

I have taken a somewhat unsystematic look at some of the more difficult or unclear ones:

I think this one:

r1q2k1r/ppp2ppp/4n3/3N4/2B5/3Q4/Pb3PPP/4RRK1 w - - bm Rxe6; id "arasan19.50"; c0 "Akopian-Ramaswamy, Gilbraltar Masters 2007";

is problematic because it looks like Re2 might be nearly as good as Rxe6 (but I am not sure).

This one:

8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - bm Nd3; id "arasan19.156"; c0 "Grandelius-Raznikov, EU Youth Chess Ch B18, Albena 2011";

is very hard but the solution is correct. Komodo just does not seem to see it but if you force Nd3 then all of a sudden it gives a big score

2r2rk1/1b2bppn/1qp1p2p/p5N1/PpBPP2P/1P6/1BQ2PP1/1K1R3R w - - bm f4; id "arasan19.75"; c0 "Goloschapov-Skatchkov, Moscow 2004";

f4 is good but I am not sure it beats out all the alternatives by a large margin.

8/3n4/1p1k1p2/p5p1/PP4P1/2B3K1/8/8 b - - bm b5; id "arasan19.136"; c0 "Spassky-Karpov, Leningrad cm(6) 1974";

In my testing so far Stockfish prefers axb4 but Komodo likes b5.

r4rk1/p1p3pp/1pPppn1q/1P1b1p2/P2Pn3/4PN2/1B2BPPP/R2Q1RK1 b - - bm Ng4; id "arasan19.152"; c0 "Korchnoi-Simagin, Soviet ch-27 Leningrad 1960";

This one also seems murky at first but I actually ran it overnight with Komodo and it appears Ng4 is best.

The endgame studies are hard but I don't think they are incorrect, but there is some chance they are. Engines have a real hard time with these (probably due to null move but maybe due to other pruning they do).

--Jon
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Vinvin
Posts: 5349
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Arasan 19.0 + updated test suite

Post by Vinvin »

jdart wrote:I have taken a somewhat unsystematic look at some of the more difficult or unclear ones:
...
8/3n4/1p1k1p2/p5p1/PP4P1/2B3K1/8/8 b - - bm b5; id "arasan19.136"; c0 "Spassky-Karpov, Leningrad cm(6) 1974";

In my testing so far Stockfish prefers axb4 but Komodo likes b5.
...
axb4 and b5 seem draw both :

Code: Select all

Stockfish_160621_x64_modern_fast:
 62/75	04:25	 3 056 252k	11 532k	 0,00	1. ... b5 2.bxa5 bxa4 3.Bb4+ Kc6 4.Be7 Kb5 5.Kf3 Kxa5 6.Ke4 Kb5 7.Kd5 Nb6+ 8.Kd4 f5 9.gxf5 g4 10.f6 g3 11.Ke3 Nd7 12.Kf3 g2 13.Kxg2
 63/75	04:25	 3 056 252k	11 532k	-0,25	1. ... axb4 2.Bxb4+ Ke6 3.a5 bxa5 4.Bxa5 Kf7 5.Bc3 Ne5 6.Bd4 Ke7 7.Bc3 Kd6 8.Bb4+ Kd5 9.Ba5 Nc6 10.Bc3 Ke6 11.Kf3 Ne5+ 12.Kg3 Nc4 13.Bd4 Nd6 14.Bb2 Ne4+ 15.Kh3 Nc5 16.Kg3 Nb3 17.Bc3 Nc1 18.Kf3 Nd3 19.Kg3 Nf4 20.Ba5 Kd5 21.Kf3 Kd4 22.Bb6+ Kd3 23.Bc5 Ng6 24.Ba3 Ne5+ 25.Kg3 Ke4 26.Be7 Nd7 27.Bd8 Ke5 28.Ba5 Kd6 29.Bc3 Kc7 30.Ba5+ Kc6 31.Kh3 Kb5 32.Bd8 Kb4 33.Kg3 Kc4 34.Kf3 Kd3 35.Kg3 Kc3 36.Be7 Kc4 37.Bd8 Kd3 38.Kf3
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