Nightmare II (Test-Set)

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Ferdy
Posts: 4833
Joined: Sun Aug 10, 2008 3:15 pm
Location: Philippines

Re: Nightmare II (Test-Set)

Post by Ferdy »

Glarean wrote:Hm... Can your CDrill really keeps the 2 solutions for 5-10 minutes??
Results at 5s, 30s and 60s.

Code: Select all

                        Engine  Hash(mb)  Thre Time(s)/pos    TotalTime  Positions  Correct     %  TestFile
                   CDrill 1900         4     1       5.000  00h:02m:30s         30        1   3.3  Nightmare 2 - (W.Eigenmann).epd
                   CDrill 1900         4     1      30.000  00h:15m:00s         30        1   3.3  Nightmare 2 - (W.Eigenmann).epd
                   CDrill 1900         4     1      60.000  00h:30m:00s         30        2   6.7  Nightmare 2 - (W.Eigenmann).epd
Details on 60s.

Code: Select all

Engine: CDrill 1900
Hash: 4, Threads: 1, Time: 60.0s/pos

Test file: Nightmare 2 - (W.Eigenmann).epd, TotalPos 30
AnalyzedPos : 30, Correct: 2 (6.67%)

Total time as reported by engine    : 00h:30m:00s:009ms
Expected time based on time/pos     : 00h:30m:00s:000ms
Engine start/quit wall time elapsed : 00h:30m:00s:081ms

   Pos  Correct  EngineBM  ScoreCP    Mate    EPD
     1        0     Nxe7+      -38       -    r4rk1/1bq1bppp/p1npp3/2nB1NP1/1p2P3/2N1B3/PPP1QP1P/2KR2R1 w - - bm Qh5; id "Nightmare II-01 - Koenigsangriff";
     2        0       Kg2     +317       -    5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - bm c8=N; id "Nightmare II-02 - Springerumwandlung";
     3        0       Ba7     -145       -    1rb2r1k/3p1pp1/p3p2p/1p2P3/4q3/1N2B1R1/PPP1N1P1/2KR1B2 w - - bm Nf4; id "Nightmare II-03 - Initiative";
     4        0      Rfe3      -95       -    r2qrb1k/3n2p1/p2p3p/1p1b4/Pnp1N1N1/5R1P/1P3PP1/1BBQR1K1 w - - bm Nxh6; id "Nightmare II-04 - Springeropfer";
     5        1     Rbxb7     -329       -    6k1/bpR5/8/7K/8/3p4/1Rb2rpB/8 w - - bm Rbxb7; id "Nightmare II-05 - Endspiel T&T&L vs T&L&L&B";
     6        0      Qe4+     +128       -    8/4kpp1/1pQq3p/p7/P7/3P2P1/2P2P1P/6K1 w - - bm Qxd6+; id "Nightmare II-06 - Endspiel D vs D";
     7        0      gxh3     -118       -    6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - - bm Qf5; id "Nightmare II-07 - Festung";
     8        0       Bb3      -23       -    2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - - bm h4; id "Nightmare II-08 - Offene Linie";
     9        0       Rc1     -445       -    7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - - bm a6; id "Nightmare II-09 - Patt";
    10        0      Rf3+     -260       -    2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - bm Nd6+; id "Nightmare II-10 - Endspiel T&S&B vs T&T&L";
    11        0      gxh2     +282       -    r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+; id "Nightmare II-11 - Koenigsangriff";
    12        0      Qxd7      +31       -    4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - - bm Qd8; id "Nightmare II-12 - Endspiel D&T vs D&T";
    13        0       Be3     -138       -    2k2Br1/p6b/Pq1r4/1p2p1b1/1Ppp2p1/Q1P3N1/5RPP/R3N1K1 b - - bm Rf6; id "Nightmare II-13 - Koenigsangriff";
    14        0      Bxf6     +139       -    r1bqr1k1/3n1ppp/p2p1b2/3N1PP1/1p1B1P2/1P6/1PP1Q2P/2KR2R1 w - - bm Qxe8+; id "Nightmare II-14 - Damenopfer";
    15        0       Kd7     +249       -    4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4; id "Nightmare II-15 - Endspiel L vs L";
    16        0      Nh7+      -93       -    2r2k2/8/8/3Rp1N1/2P3K1/8/2p4B/8 w - - bm Ne6+; id "Nightmare II-16 - Endspiel T&L&S vs T&B";
    17        0      hxg5      -17       -    8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - bm Nd3; id "Nightmare II-17 - Endspiel T&S vs T&S";
    18        0       Qh6      -31       -    r1b2rk1/2q1bppp/p2pp3/2n3PQ/1p1BP3/1BN5/PPP2P1P/2KR2R1 w - - bm Bf6; id "Nightmare II-18 - Koenigsangriff";
    19        0       Bg7      +61       -    5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - - bm Ng6; id "Nightmare II-19 - Springeropfer";
    20        0      exd3      +38       -    r3r1k1/pp1q1p2/2p2npb/PPPp4/3Pp3/2NNPpP1/1R1B1P1K/3Q3R b - - bm Kg7; id "Nightmare II-20 - Starke Felder";
    21        0       Ra7     +204       -    1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - bm Rxb3+; id "Nightmare II-21 - Endspiel T vs T";
    22        0       Qg4     -160       -    r1q2rk1/ppp1bp2/6p1/3pNPn1/7p/2PP3P/P6B/1R1Q1RK1 w - - bm f6; id "Nightmare II-22 - Bauernopfer";
    23        0       Ne8      +89       -    1k6/bPN2pp1/Pp2p3/p1p5/2pn4/3P4/PPR5/1K6 w - - bm Na8; id "Nightmare II-23 - Zugzwang";
    24        0       Re1     +124       -    7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - - bm a8=Q; id "Nightmare II-24 - Endspiel T&L&S vs D&L&S";
    25        0       O-O      -55       -    r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ - bm g4; id "Nightmare II-25 - Linienoeffnen";
    26        1        e3     +123       -    r5k1/6b1/2Nq4/2pP1p2/p1P1pPr1/Pp6/3R2PQ/1K3R2 b - - bm e3; id "Nightmare II-26 - Raeumung";
    27        0   exf8=Q+      -51       -    r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq - bm h4; id "Nightmare II-27 - Initiative";
    28        0       Nc7     -318       -    N7/8/2KQ2rp/6k1/3p3p/2p4P/4PP2/5N2 w - - bm f4+; id "Nightmare II-28 - Endspiel D&S vs T&B";
    29        0        b4     +182       -    Nn6/8/6r1/8/K7/1P6/1R6/3k2N1 w - - bm Ka3; id "Nightmare II-29 - Endspiel T&S&S vs T&S";
    30        0       Rh3     -172       -    r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - - bm Rg1; id "Nightmare II-30 - Koenigsangriff";
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Dann Corbit
Posts: 12540
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Nightmare II (Test-Set)

Post by Dann Corbit »

These seem to me to be the ten hardest ones:

Code: Select all

4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - -
5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - -
r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ -
7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - -
7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - -
2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - -
r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - -
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq -
6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - -
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - -
Has anyone found an engine that will solve any of these fairly quickly (e.g. ten minutes on a decent machine)?
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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acase
Posts: 983
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Nightmare II (Test-Set)

Post by acase »

Dann Corbit wrote:These seem to me to be the ten hardest ones:

Code: Select all

4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - -
5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - -
r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ -
7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - -
7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - -
2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - -
r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - -
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq -
6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - -
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - -
Has anyone found an engine that will solve any of these fairly quickly (e.g. ten minutes on a decent machine)?



Hello Dann,


in this position: [d]r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - - 0 1


the problem is that there are 2 solutions, the one that Walter gave 1.Rg1! and what the engines like to play which is 1.Rh3!

I'll show you what my computer thinks after MAKING both moves and thinking about it for 2 hours on both moves:


This is the position after the proposed solution of 1.Rg1!

[d]r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2K3R1 b - - 1 1

and here is what the 8/25 development version of Stockfish thinks of the position after 2 hours on a 20 core mchine with a 16 GB hashtable:

Code: Select all

48/100+	1:44:36	192,213,647k	30,623k	-2.98	1. ... f7-f5

 48/100-	1:46:25	195,445,854k	30,606k	-3.05	1. ... f7-f5 2.Rg1xg7+

 48/100+	2:01:37	222,807,526k	30,531k	-2.98	1. ... f7-f5

 48/100-	2:02:27	224,291,705k	30,524k	-3.07	1. ... f7-f5 2.Rg1xg7+

 50/98	2:03:48	226,713,446k	30,518k	-3.04	1. ... f7-f5 2.Rg1xg7+ Kg8xg7 3.Rf3-h3 Nf8-g6 4.Bd3xf5 e6xf5 5.Qh5-h7+ Kg7-f8 6.e5-e6 Be7-d6 7.Qh7xg6 Bd6-e5 8.Rh3-h5 Be5-g7 9.Nb3-d4 Bg7xd4 10.Rh5xf5+ Kf8-e7 11.Rf5-f7+ Ke7-d6 12.Rf7xc7 Kd6xc7 13.Qg6-f7+ Kc7-d6 14.Qf7-d7+ Kd6-e5 15.Qd7-g7+ Ke5xe6 16.Qg7xd4 Bb7-c6 17.Qd4xb6 Ra8-c8 18.Nc3-e2 Re8-f8 19.Qb6-b4 f4-f3 20.Ne2-d4+ Ke6-d7 21.Nd4xf3 Kd7-c7 22.Nf3-d4 Rf8-f1+ 23.Kc1-d2 Bc6-b7 24.Nd4-e6+ Kc7-b8 25.Ne6-c5 Rf1-f2+ 26.Kd2-e3 Rf2-f7 27.Nc5xa6+ Kb8-a7 28.Na6-c5 Rc8-e8+ 29.Ke3-d2 Rf7-f2+ 30.Kd2-c3 Rf2-f3+ 31.Nc5-d3 Re8-c8+ 32.Kc3-b3 Rf3-h3 33.Qb4-a5+ Ka7-b8 34.Qa5-b5 Kb8-a7 35.c2-c3 Rh3xh2 36.Nd3-c5 Rh2-h7 37.Kb3-a3 Rc8-c7 38.b2-b4 d5-d4 39.Qb5-a5+ Ka7-b8 40.Qa5-b6 Kb8-a8 41.c3xd4 Rh7-h3+ 42.Nc5-b3 Rc7-c2 43.Qb6-e6 Rh3-h1 44.Qe6-d7 Ka8-a7



And here is the position and what the same machine thinks after 1.Rh3! is played:


[d]r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB3R/1PP4P/2KR4 b - - 1 1



And here is what the same machine and engine thinks after 1.Rf3! is played:


Code: Select all

46/87+	1:07:42	112,042,087k	27,579k	-2.69	1. ... f7-f5

 46/87-	1:09:53	115,592,674k	27,566k	-2.76	1. ... f7-f5 2.Rd1-e1

 46/87-	1:34:59	157,517,563k	27,636k	-3.01	1. ... f7-f5 2.Rd1-e1

 46/87+	1:49:02	181,651,731k	27,763k	-2.89	1. ... f7-f5

 46/87	1:51:39	186,129,235k	27,781k	-2.95	1. ... f7-f5 2.Rd1-e1 f4-f3 3.Qh5-h8+ Kg8-f7 4.Rh3-g3 g7-g6 5.Re1-g1 Re8-c8 6.Nb3-d4 f3-f2 7.Rg3xg6 Kf7-e8 8.Rg1-f1 Ke8-d7 9.Rg6-g7 Qc7-c5 10.Qh8-h4 Rc8-c7 11.Qh4-f4 Kd7-c8 12.Rg7-g8 Be7-d8 13.h2-h4 Kc8-b8 14.h4-h5 Rc7-h7 15.h5-h6 Kb8-a7 16.Rg8-g7 Bd8-e7 17.Kc1-b1 Rh7-h8 18.a4-a5 Ra8-e8 19.Rf1xf2 b6xa5 20.Nc3-a4 Qc5-b4 21.Qf4-e3 Ka7-a8 22.b2-b3 Be7-c5 23.Na4xc5 Qb4xc5 24.Nd4xf5 Qc5xe3 25.Nf5xe3 Rh8xh6 26.Rg7-g8 Ka8-a7 27.Rg8xf8 Re8xf8 28.Rf2xf8 Rh6-h5 29.Ne3-g4 Rh5-g5 30.Bd3-e2 Bb7-c6 31.Rf8-f6 Bc6-b5 32.Be2-f3 Ka7-b8 33.Kb1-b2 a5-a4 34.Rf6xe6 a4xb3 35.Ng4-f6 b3xc2 36.Kb2xc2 Kb8-b7 37.Nf6xd5 Bb5-c6 38.Re6-e7+ Kb7-b8

 47/87+	1:59:53	200,359,381k	27,852k	-2.88	1. ... f7-f5

 47/86	2:05:27	209,965,996k	27,892k	-2.82	1. ... f7-f5 2.Rd1-e1 f4-f3 3.Qh5-h8+ Kg8-f7 4.Rh3-g3 g7-g6 5.Re1-g1 Re8-c8 6.Nb3-d4 f3-f2 7.Rg3xg6 Kf7-e8 8.Rg1-f1 Ke8-d7 9.Rg6-g7 Qc7-c5 10.Qh8-h4 Rc8-c7 11.Qh4-f4 Kd7-c8 12.Rg7-g8 Be7-d8 13.h2-h4 Kc8-b8 14.h4-h5 Rc7-h7 15.h5-h6 Kb8-a7 16.Rg8-g7 Bd8-e7 17.Kc1-b1 Rh7-h8 18.a4-a5 Ra8-e8 19.Rf1xf2 b6xa5 20.Nc3-a4 Qc5-b4 21.Qf4-e3 Ka7-a8 22.b2-b3 Be7-c5 23.Na4xc5 Qb4xc5 24.Nd4xf5 Qc5xe3 25.Nf5xe3 Rh8xh6 26.Rg7-g8 Ka8-a7 27.Rg8xf8 Re8xf8 28.Rf2xf8 Rh6-h5 29.Ne3-g4 Rh5-g5 30.Bd3-e2 Bb7-c6 31.Rf8-f6 Bc6-b5 32.Be2-f3 Ka7-b8 33.Kb1-b2 a5-a4 34.b3-b4 Kb8-c7 35.Rf6-f7+ Kc7-c6 36.Kb2-a3 Kc6-b6 37.Rf7-h7 Kb6-c6 38.Rh7-h6
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Glarean
Posts: 262
Joined: Sun Oct 05, 2008 1:04 pm
Location: Switzerland
Full name: Walter Eigenmann

Re: Nightmare II (Test-Set)

Post by Glarean »

Thx for your impressive test (and congratulations on your magnificent hardware... ;-)

Perhaps you can repeat your experiment, but this time with Komodo or Houdini? I'm sure, this will probably give a different move ranking....

But maybe you're right, there may be two correct solutions. I will check this once again.

Walter
acase wrote:
Dann Corbit wrote:These seem to me to be the ten hardest ones:

Code: Select all

4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - -
5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - -
r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ -
7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - -
7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - -
2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - -
r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - -
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq -
6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - -
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - -
Has anyone found an engine that will solve any of these fairly quickly (e.g. ten minutes on a decent machine)?
Hello Dann,
in this position: [d]r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - - 0 1


the problem is that there are 2 solutions, the one that Walter gave 1.Rg1! and what the engines like to play which is 1.Rh3!

I'll show you what my computer thinks after MAKING both moves and thinking about it for 2 hours on both moves:


This is the position after the proposed solution of 1.Rg1!

[d]r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2K3R1 b - - 1 1

and here is what the 8/25 development version of Stockfish thinks of the position after 2 hours on a 20 core mchine with a 16 GB hashtable:

Code: Select all

48/100+	1:44:36	192,213,647k	30,623k	-2.98	1. ... f7-f5

 48/100-	1:46:25	195,445,854k	30,606k	-3.05	1. ... f7-f5 2.Rg1xg7+

 48/100+	2:01:37	222,807,526k	30,531k	-2.98	1. ... f7-f5

 48/100-	2:02:27	224,291,705k	30,524k	-3.07	1. ... f7-f5 2.Rg1xg7+

 50/98	2:03:48	226,713,446k	30,518k	-3.04	1. ... f7-f5 2.Rg1xg7+ Kg8xg7 3.Rf3-h3 Nf8-g6 4.Bd3xf5 e6xf5 5.Qh5-h7+ Kg7-f8 6.e5-e6 Be7-d6 7.Qh7xg6 Bd6-e5 8.Rh3-h5 Be5-g7 9.Nb3-d4 Bg7xd4 10.Rh5xf5+ Kf8-e7 11.Rf5-f7+ Ke7-d6 12.Rf7xc7 Kd6xc7 13.Qg6-f7+ Kc7-d6 14.Qf7-d7+ Kd6-e5 15.Qd7-g7+ Ke5xe6 16.Qg7xd4 Bb7-c6 17.Qd4xb6 Ra8-c8 18.Nc3-e2 Re8-f8 19.Qb6-b4 f4-f3 20.Ne2-d4+ Ke6-d7 21.Nd4xf3 Kd7-c7 22.Nf3-d4 Rf8-f1+ 23.Kc1-d2 Bc6-b7 24.Nd4-e6+ Kc7-b8 25.Ne6-c5 Rf1-f2+ 26.Kd2-e3 Rf2-f7 27.Nc5xa6+ Kb8-a7 28.Na6-c5 Rc8-e8+ 29.Ke3-d2 Rf7-f2+ 30.Kd2-c3 Rf2-f3+ 31.Nc5-d3 Re8-c8+ 32.Kc3-b3 Rf3-h3 33.Qb4-a5+ Ka7-b8 34.Qa5-b5 Kb8-a7 35.c2-c3 Rh3xh2 36.Nd3-c5 Rh2-h7 37.Kb3-a3 Rc8-c7 38.b2-b4 d5-d4 39.Qb5-a5+ Ka7-b8 40.Qa5-b6 Kb8-a8 41.c3xd4 Rh7-h3+ 42.Nc5-b3 Rc7-c2 43.Qb6-e6 Rh3-h1 44.Qe6-d7 Ka8-a7



And here is the position and what the same machine thinks after 1.Rh3! is played:


[d]r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB3R/1PP4P/2KR4 b - - 1 1



And here is what the same machine and engine thinks after 1.Rf3! is played:


Code: Select all

46/87+	1:07:42	112,042,087k	27,579k	-2.69	1. ... f7-f5

 46/87-	1:09:53	115,592,674k	27,566k	-2.76	1. ... f7-f5 2.Rd1-e1

 46/87-	1:34:59	157,517,563k	27,636k	-3.01	1. ... f7-f5 2.Rd1-e1

 46/87+	1:49:02	181,651,731k	27,763k	-2.89	1. ... f7-f5

 46/87	1:51:39	186,129,235k	27,781k	-2.95	1. ... f7-f5 2.Rd1-e1 f4-f3 3.Qh5-h8+ Kg8-f7 4.Rh3-g3 g7-g6 5.Re1-g1 Re8-c8 6.Nb3-d4 f3-f2 7.Rg3xg6 Kf7-e8 8.Rg1-f1 Ke8-d7 9.Rg6-g7 Qc7-c5 10.Qh8-h4 Rc8-c7 11.Qh4-f4 Kd7-c8 12.Rg7-g8 Be7-d8 13.h2-h4 Kc8-b8 14.h4-h5 Rc7-h7 15.h5-h6 Kb8-a7 16.Rg8-g7 Bd8-e7 17.Kc1-b1 Rh7-h8 18.a4-a5 Ra8-e8 19.Rf1xf2 b6xa5 20.Nc3-a4 Qc5-b4 21.Qf4-e3 Ka7-a8 22.b2-b3 Be7-c5 23.Na4xc5 Qb4xc5 24.Nd4xf5 Qc5xe3 25.Nf5xe3 Rh8xh6 26.Rg7-g8 Ka8-a7 27.Rg8xf8 Re8xf8 28.Rf2xf8 Rh6-h5 29.Ne3-g4 Rh5-g5 30.Bd3-e2 Bb7-c6 31.Rf8-f6 Bc6-b5 32.Be2-f3 Ka7-b8 33.Kb1-b2 a5-a4 34.Rf6xe6 a4xb3 35.Ng4-f6 b3xc2 36.Kb2xc2 Kb8-b7 37.Nf6xd5 Bb5-c6 38.Re6-e7+ Kb7-b8

 47/87+	1:59:53	200,359,381k	27,852k	-2.88	1. ... f7-f5

 47/86	2:05:27	209,965,996k	27,892k	-2.82	1. ... f7-f5 2.Rd1-e1 f4-f3 3.Qh5-h8+ Kg8-f7 4.Rh3-g3 g7-g6 5.Re1-g1 Re8-c8 6.Nb3-d4 f3-f2 7.Rg3xg6 Kf7-e8 8.Rg1-f1 Ke8-d7 9.Rg6-g7 Qc7-c5 10.Qh8-h4 Rc8-c7 11.Qh4-f4 Kd7-c8 12.Rg7-g8 Be7-d8 13.h2-h4 Kc8-b8 14.h4-h5 Rc7-h7 15.h5-h6 Kb8-a7 16.Rg8-g7 Bd8-e7 17.Kc1-b1 Rh7-h8 18.a4-a5 Ra8-e8 19.Rf1xf2 b6xa5 20.Nc3-a4 Qc5-b4 21.Qf4-e3 Ka7-a8 22.b2-b3 Be7-c5 23.Na4xc5 Qb4xc5 24.Nd4xf5 Qc5xe3 25.Nf5xe3 Rh8xh6 26.Rg7-g8 Ka8-a7 27.Rg8xf8 Re8xf8 28.Rf2xf8 Rh6-h5 29.Ne3-g4 Rh5-g5 30.Bd3-e2 Bb7-c6 31.Rf8-f6 Bc6-b5 32.Be2-f3 Ka7-b8 33.Kb1-b2 a5-a4 34.b3-b4 Kb8-c7 35.Rf6-f7+ Kc7-c6 36.Kb2-a3 Kc6-b6 37.Rf7-h7 Kb6-c6 38.Rh7-h6
Top
acase
Posts: 983
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Nightmare II (Test-Set)

Post by acase »

Dann Corbit wrote:These seem to me to be the ten hardest ones:

Code: Select all

4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - -
5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - -
r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ -
7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - -
7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - -
2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - -
r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - -
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq -
6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - -
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - -
Has anyone found an engine that will solve any of these fairly quickly (e.g. ten minutes on a decent machine)?



Here is the first position on my 20 core machine with the 8/25 development version of Stockfish:

[d]2r2rk1/2pR1p1b/1pq1pQp1/p3P2p/P1PR3P/1P3P2/6PK/8 w - - 0 1

Code: Select all

FEN: 2r2rk1/2pR1p1b/1pq1pQp1/p3P2p/P1PR3P/1P3P2/6PK/8 w - - 0 1

Stockfish_16082509_x64_bmi2:
Found 145 tablebases.
 
 45/38	00:32	 1,036,090k	31,704k	 0.00	1.Rd4-d2 Rc8-b8 2.Rd2-d4 Qc6-c5 3.g2-g4 Qc5-c6 4.Rd7-e7 Rb8-e8 5.Re7-d7 Re8-a8 6.Rd7-e7 Qc6-c5 7.Re7-d7 Qc5-c6

 46/38+	02:21	 4,547,413k	32,048k	+0.06	1.g2-g4

 46/38+	02:21	 4,547,638k	32,048k	+0.13	1.g2-g4

 46/87+	06:39	 12,871,196k	32,198k	+5.27	1.g2-g4



once again same machine same engine on the second position allowing 10 minutes:



[d]5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - - 0 1


Code: Select all

FEN: 5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - - 0 1

Stockfish_16082509_x64_bmi2:

 49/36	08:44	 17,955,784k	34,238k	 0.00	1.Qg2-e4 Nd7xe5 2.Qe4xh4 Be1xh4 3.Ne7-f5 d4-d3+ 4.e2xd3 Ne5xd3 5.Nf5xh4 Nd3-e1+ 6.Kc2-d2 Ka1-b1 7.Bf8-g7 Ne1-c2 8.Nh4-f5 Nc2-a3 9.Nf5-d6 a2-a1Q 10.Bg7xa1 Na3xb5 11.Nd6xb5 Kb1xa1



didn't find this one.


Here is the third position from your list with the same machine after roughly 10 minutes



[d]r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ - 0 1


Code: Select all

FEN: r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ - 0 1

Stockfish_16082509_x64_bmi2:

 38/57	09:56	 15,966,787k	26,753k	+0.86	1.f2-f3 Bd7-e8 2.Rh1-g1 Nc6-e7 3.g2-g4 Ne7-g8 4.g4xf5 e6xf5 5.Bf6-g5 Qc8-e6 6.Ke1-f2 Ng8-e7 7.a3-a4 a7-a5 8.c2-c3 Ra8-c8 9.Rg1-b1 b7-b6 10.Ra1-a2 Rc8-a8 11.Kf2-g2 Kf8-g8 12.Kg2-h2 Rh7-f7 13.Rb1-g1 Kg8-h7 14.Qf4-g3 Ra8-c8 15.f3-f4 Kh7-h8 16.Bd3-e2 c7-c5 17.Rg1-b1 c5xd4 18.c3xd4 Rc8-b8 19.Qg3-e3 Ne7-c6 20.Be2-f3 Kh8-g8



Here is the fourth position:



[d]7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - - 0 1


Code: Select all

FEN: 7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - - 0 1

Stockfish_16082509_x64_bmi2:

 32/54+	00:52	 1,868,369k	35,595k	+0.06	1.a7-a8Q

 32/54+	00:54	 1,949,868k	35,606k	+0.13	1.a7-a8Q

 32/54+	02:24	 5,081,081k	35,197k	+117.17	1.a7-a8Q

 32/54-	02:24	 5,087,401k	35,196k	+85.90	1.a7-a8Q Qh8-h6+

 32/54+	02:24	 5,089,382k	35,197k	+110.68	1.a7-a8Q

 32/55	02:28	 5,222,835k	35,207k	+123.34	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Ka2-a1 23.Qc2xh2 Ka1-b1

 33/55	02:28	 5,235,832k	35,207k	+123.34	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Ka2-a1 23.Qc2xh2 Ka1-b1 24.Qh2-a2+ Kb1xa2

 34/55	02:29	 5,263,741k	35,203k	+123.34	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Ka2-a1 23.Qc2xh2 Ka1-b1 24.Qh2-a2+ Kb1xa2

 35/55	02:31	 5,340,179k	35,198k	+123.34	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Ka2-a1 23.Qc2xh2 Ka1-b1 24.Qh2-a2+ Kb1xa2

 36/55	02:36	 5,499,882k	35,192k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Qh2xc2+ 23.Kd1xc2

 37/55	02:37	 5,527,834k	35,196k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Qh2xc2+ 23.Kd1xc2

 38/55	02:40	 5,637,929k	35,188k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Qh2xc2+ 23.Kd1xc2

 39/55	02:42	 5,717,241k	35,193k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Qh2xc2+ 23.Kd1xc2

 40/55	02:45	 5,823,212k	35,190k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Qh2xc2+ 23.Kd1xc2

 41/55	02:52	 6,078,998k	35,184k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Qh2xc2+ 23.Kd1xc2

 42/55	02:56	 6,202,923k	35,159k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Qh2xc2+ 23.Kd1xc2

 43/55	03:07	 6,594,482k	35,079k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Qe1-c3+ Ka1-b1 21.Qc3-c1+ Kb1-a2 22.Qc1-c2+ Qh2xc2+ 23.Kd1xc2

 44/55	03:17	 6,931,247k	35,053k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-h8 16.Qc4-c1+ Ka1-a2 17.Qc1-d2+ Ka2-b1 18.Qd2-b4+ Kb1-a1 19.Qb4-e1 Qh8-h2 20.Kd1-c1 Ka1-a2 21.Qe1-e6+ Ka2-a1 22.Qe6-e5+ Qh2-b2+ 23.Nd3xb2 a3xb2+

 45/55	03:33	 7,459,893k	35,011k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-b1+ 16.Kd1-d2 Qb1-b8 17.Qc4-d4+ Ka1-b1 18.Qd4-g1+ Kb1-a2 19.Nd3-c1+ Ka2-a1 20.Nc1-b3+ Ka1-b2 21.Qg1-a1+ Kb2xb3 22.Qa1-b1+ Kb3-c4 23.Qb1xb8

 46/55	04:02	 8,464,931k	34,864k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-b1+ 16.Kd1-d2 Qb1-b8 17.Qc4-d4+ Ka1-b1 18.Qd4-g1+ Kb1-a2 19.Nd3-c1+ Ka2-a1 20.Nc1-b3+ Ka1-b2 21.Qg1-a1+ Kb2xb3 22.Qa1-b1+ Kb3-c4 23.Qb1xb8

 47/55	04:22	 9,111,626k	34,773k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-b6 16.Kd1-d2 c6-c5 17.Qc4-c3+ Ka1-b1 18.Qc3-c2+ Kb1-a1 19.Qc2-d1+ Qb6-b1 20.Qd1-c1 Ka1-a2 21.Qc1-c3 Qb1-g1 22.Nd3-c1+ Qg1xc1+ 23.Qc3xc1

 48/55	04:39	 9,686,687k	34,709k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-b6 16.Kd1-d2 c6-c5 17.Qc4-c3+ Ka1-b1 18.Qc3-c2+ Kb1-a1 19.Qc2-d1+ Qb6-b1 20.Qd1-c1 Ka1-a2 21.Qc1-c3 Qb1-g1 22.Nd3-c1+ Qg1xc1+ 23.Qc3xc1

 49/55	05:08	 10,682,765k	34,595k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-b6 16.Kd1-d2 c6-c5 17.Qc4-c3+ Ka1-b1 18.Qc3-c2+ Kb1-a1 19.Qc2-d1+ Qb6-b1 20.Qd1-c1 Ka1-a2 21.Qc1-c3 Qb1-g1 22.Nd3-c1+ Qg1xc1+ 23.Qc3xc1

 50/55	06:43	 13,948,816k	34,565k	+123.35	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d1 Ka2-a1 13.Qc2-c1+ Ka1-a2 14.Qc1-c4+ Ka2-a1 15.Nc5-d3 Qb2-b6 16.Kd1-d2 c6-c5 17.Qc4-c3+ Ka1-b1 18.Qc3-c2+ Kb1-a1 19.Qc2-d1+ Qb6-b1 20.Qd1-c1 Ka1-a2 21.Qc1-c3 Qb1-g1 22.Nd3-c1+ Qg1xc1+ 23.Qc3xc1

 51/55	09:00	 18,766,389k	34,720k	+123.39	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d2 Ka2-a1 13.Nc5-b3+ Ka1-a2 14.Kd2-d1 c6-c5 15.Nb3-d2 Ka2-a1 16.Qc2-c4 Qb2-b4 17.Nd2-b3+ Qb4xb3+ 18.Qc4xb3

 52/55	10:00	 20,868,583k	34,751k	+123.39	1.a7-a8Q Qh8xa8 2.Na4-c5 Bf1-c4 3.Re7-a7 Qa8xa7 4.f7-f8Q Qa7-b6 5.Bc2-b3 Bc4-f7 6.Qf8-d6 Bf7xb3 7.Qd6xf6+ Ka1-a2 8.Qf6-f2+ Ka2-a1 9.Qf2-d4+ Ka1-a2 10.Qd4-d2+ Bb3-c2 11.Qd2xc2+ Qb6-b2+ 12.Kc1-d2 Ka2-a1 13.Nc5-b3+ Ka1-a2 14.Kd2-d1 c6-c5 15.Nb3-d2 Ka2-a1 16.Qc2-c4 Qb2-b7 17.Nd2-b3+ Qb7xb3+ 18.Qc4xb3


Here is the 5th position:
[d]7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - - 0 1


Code: Select all

FEN: 7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - - 0 1

Stockfish_16082509_x64_bmi2:
 
 53/62	07:25	 16,462,398k	36,965k	 0.00	1.a5-a6 b7xa6 2.Ra1xa6 Qc6xa6 3.Bd2-c3+ d5-d4 4.Bc3xd4+ Ne6xd4 5.g6-g7+ Kh8-g8 6.Bd3-c4+ d6-d5 7.Bc4xd5+ Qa6-e6 8.Bd5-b3 Kg8-f7 9.Bb3-d5 b5-b4 10.Bd5-b3 Qe6xb3 11.g7-g8Q+ Kf7xg8

 54/62	09:17	 20,701,654k	37,103k	 0.00	1.a5-a6 b7xa6 2.Ra1xa6 Qc6xa6 3.Bd2-c3+ d5-d4 4.Bc3xd4+ Ne6xd4 5.g6-g7+ Kh8-g8 6.Bd3-c4+ d6-d5 7.Bc4xd5+ Qa6-e6 8.Bd5-b3 Kg8-f7 9.Bb3-d5 b5-b4 10.Bd5-b3 Qe6xb3 11.g7-g8Q+ Kf7xg8

 55/62	11:23	 25,388,113k	37,125k	 0.00	1.a5-a6 b7xa6 2.Ra1xa6 Qc6xa6 3.Bd2-c3+ d5-d4 4.Bc3xd4+ Ne6xd4 5.g6-g7+ Kh8-g8 6.Bd3-c4+ d6-d5 7.Bc4xd5+ Qa6-e6 8.Bd5-b3 Kg8-f7 9.Bb3-d5 b5-b4 10.Bd5-b3 Qe6xb3 11.g7-g8Q+ Kf7xg8



here is the 6th position:
[d]2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - - 0 1






Code: Select all

FEN: 2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - - 0 1

Stockfish_16082509_x64_bmi2:

 36/61+	06:28	 10,681,817k	27,466k	+1.99	1.Ba4-b3

 36/61+	07:25	 12,231,094k	27,475k	+2.06	1.Ba4-b3

 36/61-	07:37	 12,585,450k	27,481k	+1.99	1.Ba4-b3 Nc6-d8

 36/61+	08:03	 13,278,530k	27,488k	+2.07	1.Ba4-b3

 36/61-	09:10	 15,143,898k	27,508k	+1.96	1.Ba4-b3 Nc6-d8

 38/67	09:52	 16,310,484k	27,527k	+2.01	1.Ba4-b3 Nc6-d8 2.Rc1xc8 Qd7xc8 3.h2-h4 Bf3-c6 4.Bd6-f4 Ke8-f7 5.Re3-c3 Qc8-d7 6.Qd2xd7+ Bc6xd7 7.Rc3-c7 Kf7-e8 8.Bf4xh6 Nd8-c6 9.Bb3-a4 Nc6-e5 10.Ba4xd7+ Ne5xd7 11.Rc7-a7 f6-f5 12.Ra7xa6 Ke8-f7 13.Ra6-a7 Kf7-g6 14.Ra7xd7 Kg6xh6 15.Rd7-e7 Kh6-h5 16.Re7xe6 Rg8-d8 17.Re6-e5 Rd8-d3+ 18.Kg3-g2 Kh5xh4 19.Re5xf5 Rd3-d4 20.b2-b3 Rd4-d2 21.a2-a4 Rd2-b2 22.Rf5-b5 Rb2-a2 23.Rb5-b4 Ra2-a3 24.Kg2-f1 Kh4-g5


The 7th position was already discussed in my previous post in this thread.



here is the 8th position:

[d]r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq - 0 1


Code: Select all

FEN: r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq - 0 1

Stockfish_16082509_x64_bmi2:

 43/53	07:47	 12,615,626k	26,981k	 0.00	1.e7xf8B Ke8xf8 2.Bg5-e3 Kf8-e8 3.h2-h4 b5-b4 4.Nc3-b1 Rh8-h5 5.Rd1-d6 Nb6-c8 6.Rd6-d1 Nc8-b6

 44/53	08:43	 14,136,713k	27,001k	 0.00	1.e7xf8B Ke8xf8 2.Bg5-e3 Kf8-e8 3.h2-h4 b5-b4 4.Nc3-b1 Rh8-h5 5.Rd1-d6 Nb6-c8 6.Rd6-d1 Nc8-b6

 45/53	10:14	 16,622,424k	27,061k	 0.00	1.e7xf8B Ke8xf8 2.Bg5-e3 Kf8-e8 3.h2-h4 b5-b4 4.Nc3-b1 Rh8-h5 5.Rd1-d6 Nb6-c8 6.Rd6-d1 Nc8-b6



Here is the 9th position:
[d]6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - - 0 1



Code: Select all

FEN: 6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - - 0 1

Stockfish_16082509_x64_bmi2:

 45/64	06:01	 11,550,892k	31,916k	-4.64	1. ... g4xh3 2.Ng3xh5 g6xh5 3.Rh2xh3 Rg7-g2 4.f4-f5+ Ke6xf5 5.Qd2xh6 Kf5xe5 6.Qh6xh5+ Ke5-d6 7.Qh5-f5 Kd6-c7 8.h4-h5 Rg8-e8 9.Qf5-f4+ Kc7-b6 10.h5-h6 Rg2-g1 11.Rh3-g3 Rg1xg3 12.Qf4xg3 Bd5-g8 13.Qg3-g7 Re8-a8 14.Qg7-d7 Ra8-f8 15.h6-h7 Bg8xh7 16.Qd7xh7 Rf8-e8 17.Qh7-h5 Re8-b8 18.Qh5-e5 Rb8-f8 19.Qe5-e7 Rf8-c8 20.Qe7-g5 Rc8-a8 21.Qg5-f5 Ra8-h8 22.Qf5-g4 Rh8-f8 23.Qg4-g7 Rf8-a8 24.Qg7-f6 Ra8-c8 25.Qf6-e7 Rc8-a8 26.Qe7-d6 Ra8-c8 27.Qd6-f6 Rc8-e8 28.Qf6-f7 Re8-h8 29.Qf7-e6 Rh8-f8 30.Qe6-e4 Rf8-h8 31.Qe4-f5 Rh8-e8 32.Qf5-h7

 46/64	07:26	 14,229,209k	31,873k	-4.64	1. ... g4xh3 2.Ng3xh5 g6xh5 3.Rh2xh3 Rg7-g2 4.f4-f5+ Ke6xf5 5.Qd2xh6 Kf5xe5 6.Qh6xh5+ Ke5-d6 7.Qh5-f5 Kd6-c7 8.h4-h5 Rg8-e8 9.Qf5-f4+ Kc7-b6 10.h5-h6 Rg2-g1 11.Rh3-g3 Rg1xg3 12.Qf4xg3 Bd5-g8 13.Qg3-g7 Re8-a8 14.Qg7-d7 Ra8-f8 15.h6-h7 Bg8xh7 16.Qd7xh7 Rf8-e8 17.Qh7-h5 Re8-b8 18.Qh5-e5 Rb8-f8 19.Qe5-e7 Rf8-c8 20.Qe7-g5 Rc8-a8 21.Qg5-f5 Ra8-h8 22.Qf5-g4 Rh8-f8 23.Qg4-g7 Rf8-a8 24.Qg7-f6 Ra8-c8 25.Qf6-e7 Rc8-a8 26.Qe7-d6 Ra8-c8 27.Qd6-f6 Rc8-e8 28.Qf6-g6 Re8-h8 29.Qg6-f5 Rh8-a8 30.Kb2-c1 Ra8-g8 31.Qf5-d7 Rg8-h8 32.Qd7-g7 Rh8-d8

 47/64	08:50	 16,902,329k	31,846k	-4.64	1. ... g4xh3 2.Ng3xh5 g6xh5 3.Rh2xh3 Rg7-g2 4.f4-f5+ Ke6xf5 5.Qd2xh6 Kf5xe5 6.Qh6xh5+ Ke5-d6 7.Qh5-f5 Kd6-c7 8.h4-h5 Rg8-e8 9.Qf5-f4+ Kc7-b6 10.h5-h6 Rg2-g1 11.Rh3-g3 Rg1xg3 12.Qf4xg3 Bd5-g8 13.Qg3-g7 Re8-a8 14.Qg7-d7 Ra8-f8 15.h6-h7 Bg8xh7 16.Qd7xh7 Rf8-e8 17.Qh7-h5 Re8-b8 18.Qh5-e5 Rb8-f8 19.Qe5-e7 Rf8-c8 20.Qe7-g5 Rc8-a8 21.Qg5-f5 Ra8-h8 22.Qf5-g4 Rh8-f8 23.Qg4-g7 Rf8-a8 24.Qg7-f6 Ra8-c8 25.Qf6-e7 Rc8-a8 26.Qe7-d6 Ra8-c8 27.Qd6-f6 Rc8-e8 28.Qf6-f2 Re8-h8 29.Qf2-f5 Rh8-a8 30.Kb2-c1 Ra8-g8 31.Qf5-h3 Rg8-d8 32.Qh3-g4 Rd8-f8 33.Qg4-h4

 48/65	12:15	 23,473,873k	31,899k	-4.64	1. ... g4xh3 2.Ng3xh5 g6xh5 3.Rh2xh3 Rg7-g2 4.f4-f5+ Ke6xf5 5.Qd2xh6 Kf5xe5 6.Qh6xh5+ Ke5-d6 7.Qh5-f5 Kd6-c7 8.h4-h5 Rg8-e8 9.Qf5-f4+ Kc7-b6 10.h5-h6 Rg2-g1 11.Rh3-g3 Rg1xg3 12.Qf4xg3 Bd5-g8 13.Qg3-g7 Re8-a8 14.Qg7-d7 Ra8-f8 15.h6-h7 Bg8xh7 16.Qd7xh7 Rf8-e8 17.Qh7-h5 Re8-b8 18.Qh5-e5 Rb8-f8 19.Qe5-e7 Rf8-c8 20.Qe7-g5 Rc8-a8 21.Qg5-f5 Ra8-h8 22.Qf5-g4 Rh8-f8 23.Qg4-g7 Rf8-a8 24.Qg7-f6 Ra8-c8 25.Qf6-d6 Rc8-e8 26.Qd6-d7 Re8-f8 27.Qd7-e6 Rf8-h8 28.Qe6-e4 Rh8-f8 29.Qe4-h4 Rf8-a8 30.Qh4-h6 Ra8-e8 31.Qh6-d6 Re8-c8 32.Qd6-e7 Rc8-g8 33.Kb2-c1 Rg8-a8

 49/68	12:21	 23,668,290k	31,905k	-4.64	1. ... g4xh3 2.Ng3xh5 g6xh5 3.Rh2xh3 Rg7-g2 4.f4-f5+ Ke6xf5 5.Qd2xh6 Kf5xe5 6.Qh6xh5+ Ke5-d6 7.Qh5-f5 Kd6-c7 8.h4-h5 Rg8-e8 9.Qf5-f4+ Kc7-b6 10.h5-h6 Rg2-g1 11.Rh3-g3 Rg1xg3 12.Qf4xg3 Bd5-g8 13.Qg3-g7 Re8-a8 14.Qg7-d7 Ra8-f8 15.h6-h7 Bg8xh7 16.Qd7xh7 Rf8-e8 17.Qh7-h5 Re8-b8 18.Qh5-e5 Rb8-f8 19.Qe5-e7 Rf8-c8 20.Qe7-g5 Rc8-a8 21.Qg5-f5 Ra8-h8 22.Qf5-g4 Rh8-f8 23.Qg4-g7 Rf8-a8 24.Qg7-f6 Ra8-c8 25.Qf6-d6 Rc8-e8 26.Qd6-g3 Re8-h8 27.Qg3-e1 Rh8-f8 28.Qe1-h4 Rf8-a8 29.Kb2-c1 Ra8-f8 30.Qh4-e7 Rf8-c8 31.Qe7-g7 Rc8-e8 32.Qg7-g6 Re8-h8 33.Qg6-f7 Rh8-a8 34.Qf7-f6 Ra8-e8




And here is the 10th and last position:
[d]1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - 0 1


Code: Select all

FEN: 1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - 0 1

Stockfish_16082509_x64_bmi2:

 68/68	07:52	 14,314,409k	30,304k	+2.14	1. ... Ra6-b6 2.Bb1-c2 Ke7-f6 3.Bc2-d1 Rb8-d8 4.Bd1-e2 Rb6-b8 5.Rd5-d1 Kf6-e6 6.Rd1-d5 Ke6-d7 7.Rd5-d1 Rb8-b7 8.Rd1-d2 Rd8-a8 9.Rd2-d5 Rb7-b8 10.Be2-d1 Kd7-c6 11.Bd1-e2 Rb8-b4 12.Rd5-d2 Ra8-h8 13.Rd2-d5 Rb4-b7 14.Rd5-d1 Rh8-a8 15.Rd1-d2 Ra8-b8 16.Rd2-d5 Rb7-b4 17.Rd5-d1 Rb8-b7 18.Rd1-d5 Rb7-f7 19.Rd5-d1 Rf7-d7 20.Be2-f1 Rb4-b8 21.Bf1-e2 Rb8-b7 22.Rd1-d5 Rd7-d8 23.Rd5-d1 Rb7-b8 24.Rd1-d5 Rd8-c8 25.Rd5-d1 Kc6-d7 26.Be2-f1 Kd7-e6 27.Bf1-e2 Rb8-b7 28.Rd1-d5 Rb7-b4 29.Rd5-d1 Rc8-d8 30.Rd1-d5 Ke6-f6 31.Rd5-d1 Rb4-b8 32.Rd1-d5 Kf6-g7 33.Rd5-d1 Rd8-d7 34.Rd1-d5 Rb8-b7 35.Rd5-d1

 69/69	12:52	 23,404,564k	30,310k	+2.14	1. ... Ra6-b6 2.Bb1-c2 Ke7-f6 3.Bc2-d1 Rb8-d8 4.Bd1-e2 Rb6-b8 5.Rd5-d1 Kf6-e6 6.Rd1-d5 Rd8-h8 7.Rd5-d1 Rb8-d8 8.Rd1-d5 Ke6-f6 9.Rd5-d1 Rh8-g8 10.Rd1-d5 Rd8-d7 11.Rd5-d1 Rg8-a8 12.Rd1-d5 Ra8-b8 13.Rd5-d2 Kf6-e6 14.Rd2-d1 Rd7-b7 15.Rd1-d5 Rb7-a7 16.Rd5-d1 Ra7-a8 17.Rd1-d2 Rb8-b4 18.Rd2-d1 Ra8-d8 19.Rd1-d5 Rd8-g8 20.Rd5-d1 Rg8-b8 21.Rd1-d5 Rb8-c8 22.Rd5-d1 Rb4-b7 23.Rd1-d5 Rc8-d8 24.Rd5-d1 Ke6-d7 25.Rd1-d5 Rb7-b8 26.Rd5-d1 Kd7-e7 27.Rd1-d5 Ke7-f7 28.Rd5-d1 Kf7-f6 29.Rd1-d5 Kf6-g7 30.Rd5-d1 Rd8-d7 31.Rd1-d5 Rb8-b7 32.Rd5-d1 Kg7-h7 33.Rd1-d5 Rb7-b8 34.Be2-f1 Rd7-d8 35.Bf1-g2 Kh7-h6

 70/70	12:58	 23,579,072k	30,307k	+2.14	1. ... Ra6-b6 2.Bb1-c2 Ke7-f6 3.Bc2-d1 Rb8-d8 4.Bd1-e2 Rb6-b8 5.Rd5-d1 Kf6-e6 6.Rd1-d5 Rb8-a8 7.Be2-d1 Ke6-f6 8.Rd5-d2 Ra8-c8 9.Rd2-d5 Rc8-b8 10.Bd1-e2 Kf6-g7 11.Rd5-d2 Rb8-b7 12.Rd2-d1 Kg7-h6 13.Rd1-d5 Rd8-d7 14.Rd5-d1 Rb7-b8 15.Rd1-d5 Kh6-g7 16.Rd5-d1 Kg7-h7 17.Be2-f1 Rb8-d8 18.Bf1-e2 Rd7-b7 19.Rd1-d5 Rb7-b8 20.Rd5-d1 Rb8-b4 21.Be2-f1 Rd8-d7 22.Rd1-d5 Kh7-g7 23.Bf1-e2 Kg7-f6 24.Rd5-d2 Rb4-b8 25.Rd2-d5 Rb8-b7 26.Rd5-d1 Rd7-d8 27.Rd1-d5 Kf6-e6 28.Rd5-d1 Ke6-d7 29.Rd1-d5 Rb7-b8 30.Rd5-d1 Kd7-c6 31.Rd1-d5 Rb8-b7 32.Rd5-d1 Rd8-b8 33.Rd1-d5 Rb7-b4 34.Rd5-d1 Rb8-b7 35.Rd1-d5 Rb7-f7 36.Rd5-d1
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acase
Posts: 983
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Nightmare II (Test-Set)

Post by acase »

Glarean wrote:Thx for your impressive test (and congratulations on your magnificent hardware... ;-)

Perhaps you can repeat your experiment, but this time with Komodo or Houdini? I'm sure, this will probably give a different move ranking....

But maybe you're right, there may be two correct solutions. I will check this once again.

Walter
acase wrote:
Dann Corbit wrote:These seem to me to be the ten hardest ones:

Code: Select all

4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - -
5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - -
r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ -
7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - -
7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - -
2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - -
r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - -
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq -
6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - -
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - -
Has anyone found an engine that will solve any of these fairly quickly (e.g. ten minutes on a decent machine)?
Hello Dann,
in this position: [d]r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - - 0 1


the problem is that there are 2 solutions, the one that Walter gave 1.Rg1! and what the engines like to play which is 1.Rh3!

I'll show you what my computer thinks after MAKING both moves and thinking about it for 2 hours on both moves:


This is the position after the proposed solution of 1.Rg1!

[d]r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2K3R1 b - - 1 1

and here is what the 8/25 development version of Stockfish thinks of the position after 2 hours on a 20 core mchine with a 16 GB hashtable:

Code: Select all

48/100+	1:44:36	192,213,647k	30,623k	-2.98	1. ... f7-f5

 48/100-	1:46:25	195,445,854k	30,606k	-3.05	1. ... f7-f5 2.Rg1xg7+

 48/100+	2:01:37	222,807,526k	30,531k	-2.98	1. ... f7-f5

 48/100-	2:02:27	224,291,705k	30,524k	-3.07	1. ... f7-f5 2.Rg1xg7+

 50/98	2:03:48	226,713,446k	30,518k	-3.04	1. ... f7-f5 2.Rg1xg7+ Kg8xg7 3.Rf3-h3 Nf8-g6 4.Bd3xf5 e6xf5 5.Qh5-h7+ Kg7-f8 6.e5-e6 Be7-d6 7.Qh7xg6 Bd6-e5 8.Rh3-h5 Be5-g7 9.Nb3-d4 Bg7xd4 10.Rh5xf5+ Kf8-e7 11.Rf5-f7+ Ke7-d6 12.Rf7xc7 Kd6xc7 13.Qg6-f7+ Kc7-d6 14.Qf7-d7+ Kd6-e5 15.Qd7-g7+ Ke5xe6 16.Qg7xd4 Bb7-c6 17.Qd4xb6 Ra8-c8 18.Nc3-e2 Re8-f8 19.Qb6-b4 f4-f3 20.Ne2-d4+ Ke6-d7 21.Nd4xf3 Kd7-c7 22.Nf3-d4 Rf8-f1+ 23.Kc1-d2 Bc6-b7 24.Nd4-e6+ Kc7-b8 25.Ne6-c5 Rf1-f2+ 26.Kd2-e3 Rf2-f7 27.Nc5xa6+ Kb8-a7 28.Na6-c5 Rc8-e8+ 29.Ke3-d2 Rf7-f2+ 30.Kd2-c3 Rf2-f3+ 31.Nc5-d3 Re8-c8+ 32.Kc3-b3 Rf3-h3 33.Qb4-a5+ Ka7-b8 34.Qa5-b5 Kb8-a7 35.c2-c3 Rh3xh2 36.Nd3-c5 Rh2-h7 37.Kb3-a3 Rc8-c7 38.b2-b4 d5-d4 39.Qb5-a5+ Ka7-b8 40.Qa5-b6 Kb8-a8 41.c3xd4 Rh7-h3+ 42.Nc5-b3 Rc7-c2 43.Qb6-e6 Rh3-h1 44.Qe6-d7 Ka8-a7



And here is the position and what the same machine thinks after 1.Rh3! is played:


[d]r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB3R/1PP4P/2KR4 b - - 1 1



And here is what the same machine and engine thinks after 1.Rf3! is played:


Code: Select all

46/87+	1:07:42	112,042,087k	27,579k	-2.69	1. ... f7-f5

 46/87-	1:09:53	115,592,674k	27,566k	-2.76	1. ... f7-f5 2.Rd1-e1

 46/87-	1:34:59	157,517,563k	27,636k	-3.01	1. ... f7-f5 2.Rd1-e1

 46/87+	1:49:02	181,651,731k	27,763k	-2.89	1. ... f7-f5

 46/87	1:51:39	186,129,235k	27,781k	-2.95	1. ... f7-f5 2.Rd1-e1 f4-f3 3.Qh5-h8+ Kg8-f7 4.Rh3-g3 g7-g6 5.Re1-g1 Re8-c8 6.Nb3-d4 f3-f2 7.Rg3xg6 Kf7-e8 8.Rg1-f1 Ke8-d7 9.Rg6-g7 Qc7-c5 10.Qh8-h4 Rc8-c7 11.Qh4-f4 Kd7-c8 12.Rg7-g8 Be7-d8 13.h2-h4 Kc8-b8 14.h4-h5 Rc7-h7 15.h5-h6 Kb8-a7 16.Rg8-g7 Bd8-e7 17.Kc1-b1 Rh7-h8 18.a4-a5 Ra8-e8 19.Rf1xf2 b6xa5 20.Nc3-a4 Qc5-b4 21.Qf4-e3 Ka7-a8 22.b2-b3 Be7-c5 23.Na4xc5 Qb4xc5 24.Nd4xf5 Qc5xe3 25.Nf5xe3 Rh8xh6 26.Rg7-g8 Ka8-a7 27.Rg8xf8 Re8xf8 28.Rf2xf8 Rh6-h5 29.Ne3-g4 Rh5-g5 30.Bd3-e2 Bb7-c6 31.Rf8-f6 Bc6-b5 32.Be2-f3 Ka7-b8 33.Kb1-b2 a5-a4 34.Rf6xe6 a4xb3 35.Ng4-f6 b3xc2 36.Kb2xc2 Kb8-b7 37.Nf6xd5 Bb5-c6 38.Re6-e7+ Kb7-b8

 47/87+	1:59:53	200,359,381k	27,852k	-2.88	1. ... f7-f5

 47/86	2:05:27	209,965,996k	27,892k	-2.82	1. ... f7-f5 2.Rd1-e1 f4-f3 3.Qh5-h8+ Kg8-f7 4.Rh3-g3 g7-g6 5.Re1-g1 Re8-c8 6.Nb3-d4 f3-f2 7.Rg3xg6 Kf7-e8 8.Rg1-f1 Ke8-d7 9.Rg6-g7 Qc7-c5 10.Qh8-h4 Rc8-c7 11.Qh4-f4 Kd7-c8 12.Rg7-g8 Be7-d8 13.h2-h4 Kc8-b8 14.h4-h5 Rc7-h7 15.h5-h6 Kb8-a7 16.Rg8-g7 Bd8-e7 17.Kc1-b1 Rh7-h8 18.a4-a5 Ra8-e8 19.Rf1xf2 b6xa5 20.Nc3-a4 Qc5-b4 21.Qf4-e3 Ka7-a8 22.b2-b3 Be7-c5 23.Na4xc5 Qb4xc5 24.Nd4xf5 Qc5xe3 25.Nf5xe3 Rh8xh6 26.Rg7-g8 Ka8-a7 27.Rg8xf8 Re8xf8 28.Rf2xf8 Rh6-h5 29.Ne3-g4 Rh5-g5 30.Bd3-e2 Bb7-c6 31.Rf8-f6 Bc6-b5 32.Be2-f3 Ka7-b8 33.Kb1-b2 a5-a4 34.b3-b4 Kb8-c7 35.Rf6-f7+ Kc7-c6 36.Kb2-a3 Kc6-b6 37.Rf7-h7 Kb6-c6 38.Rh7-h6


Hello Walter,

I will give it a try with your suggestions (houdini and komodo).

On a side note, I'm glad to see one of my positions made it into your tough collection here, namely this one :

[d]2k2Br1/p6b/Pq1r4/1p2p1b1/1Ppp2p1/Q1P3N1/5RPP/R3N1K1 b - - 0 1


on this particular position which is very difficult for most engines, deep Rybka 4.1 solves it rather quickly (anywhere from 1 second to ~35 seconds on my machine)

Code: Select all

FEN: 2k2Br1/p6b/Pq1r4/1p2p1b1/1Ppp2p1/Q1P3N1/5RPP/R3N1K1 b - - 0 1

Deep Rybka 4.1 SSE42 x64:

 18+	00:35	 29,999k	850k	+0.67	1. ... Rd6-f6 2.Bf8-c5 Bg5-e3 3.Bc5xb6 Be3xf2+ 4.Kg1-h1 Bf2xg3 5.h2xg3 Rf6-f1+ 6.Kh1-h2 Bh7-b1 7.Ne1-f3 g4xf3 8.g2xf3 Rg8-h8+ 9.Kh2-g2 Rf1-h1 10.g3-g4 Rh8-h2+ 11.Kg2-g3 Rh2-h3+ 12.Kg3-f2 e5-e4 13.c3xd4 Rh1-h2+ 14.Kf2-g1 Bb1-d3 15.Bb6-c7 Rh2-e2 16.f3xe4 Kc8xc7

 18+	01:14	 60,974k	816k	+1.47	1. ... Rd6-f6 2.Bf8-c5 Bg5-e3 3.Ng3-h1 Qb6-e6 4.g2-g3 Be3xf2+ 5.Nh1xf2 Qe6-d7 6.c3xd4 e5xd4 7.Ne1-g2 Rg8-e8 8.Ng2-f4 c4-c3 9.Qa3-c1 c3-c2 10.Qc1-d2

 18	02:48	 140,094k	831k	+1.49	1. ... Rd6-f6 2.Bf8-c5 Bg5-e3 3.Ng3-h1 Qb6-e6 4.Ra1-a2 Qe6-d7 5.Ra2-e2 Be3xf2+ 6.Nh1xf2 g4-g3 7.h2xg3 d4-d3 8.Re2-d2 Rg8xg3 9.Qa3-c1 Rf6xa6 10.Ne1-c2 Rg3xg2+ 11.Kg1xg2 Qd7-b7+ 12.Kg2-f1 Ra6-f6 13.Kf1-e1 Rf6-g6

 19	02:48	 140,094k	831k	+1.49	1. ... Rd6-f6 2.Bf8-c5 Bg5-e3 3.Ng3-h1 Qb6-e6 4.Ra1-a2 Qe6-d7 5.Ra2-e2 Be3xf2+ 6.Nh1xf2 g4-g3 7.h2xg3 d4-d3 8.Re2-d2 Rg8xg3 9.Qa3-c1 Rf6xa6 10.Ne1-c2 Rg3xg2+ 11.Kg1xg2 Qd7-b7+ 12.Kg2-f1 Ra6-f6 13.Kf1-e1 Rf6-g6

 20+	02:49	 141,292k	831k	+1.61	1. ... Rd6-f6 2.Bf8-c5 Bg5-e3 3.Ng3-h1 Qb6-e6 4.Ra1-a2 Qe6-d7 5.Ra2-e2 Be3xf2+ 6.Nh1xf2 g4-g3 7.h2xg3 d4-d3 8.Re2-d2 Rg8xg3 9.Qa3-c1 Rf6xa6 10.Ne1-c2 Rg3xg2+ 11.Kg1xg2 Qd7-b7+ 12.Kg2-f1 Ra6-f6 13.Kf1-e1 Rf6-g6
 
 20+	03:22	 169,232k	837k	+2.16	1. ... Rd6-f6 2.Bf8-c5 Bg5-e3 3.Ng3-h1 Qb6-e6 4.Ra1-a2 g4-g3 5.h2xg3 Bh7-e4 6.c3xd4 e5xd4 7.Ra2-e2 Rf6xf2 8.Re2xe3 d4xe3 9.Nh1xf2 e3xf2+ 10.Bc5xf2 Rg8-g6 11.Qa3-b2 Qe6-f6 12.Qb2-e2 Qf6-f5 13.Qe2-b2 Rg6-f6 14.Qb2-d4 Rf6xa6 15.Qd4-h8+ Kc8-b7 16.Qh8-g7+ Kb7-b8

 20+	04:33	 231,627k	848k	+2.96	1. ... Rd6-f6 2.Bf8-c5 Bg5-e3 3.Ng3-h1 Qb6-e6 4.Ra1-a2 g4-g3 5.h2xg3 Bh7-e4 6.c3xd4 e5xd4 7.Ra2-e2 Rf6xf2 8.Re2xe3 d4xe3 9.Nh1xf2 e3xf2+ 10.Bc5xf2 Rg8-g6 11.Qa3-b2 Qe6-f6 12.Qb2-e2 Qf6-e5 13.Ne1-f3 Qe5-d5 14.Nf3-d2 Rg6-e6 15.Qe2-g4 Be4-g6 16.Nd2-f3 Qd5-d7

 20	07:03	 363,871k	859k	+3.42	1. ... Rd6-f6 2.Bf8-c5 Bg5-e3 3.Ng3-h1 Qb6-e6 4.Ra1-a2 g4-g3 5.Nh1xg3 Rg8xg3 6.h2xg3 Qe6-f7 7.Qa3-b2 d4xc3 8.Qb2xc3 Rf6xf2 9.Ra2xf2 Qf7xf2+ 10.Kg1-h2 Qf2-g1+ 11.Kh2-h3 Be3xc5 12.Qc3xe5 Bc5xb4 13.Qe5-h8+ Kc8-c7 14.Qh8-g7+ Kc7-c6 15.Qg7-b7+ Kc6-d6 16.Ne1-f3 Bh7-f5+

And of course Dann is right, your collections of positions are always high quality and very challenging (as I would expect from someonelike you who is a connoisseur of fine music and chess). Thanks for your work.
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Nightmare II (Test-Set)

Post by Vinvin »

Same list, with key move :

Code: Select all

4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - - bm Qd8; id "Nightmare II-12 - Endspiel D&T vs D&T";
5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - - bm Ng6; id "Nightmare II-19 - Springeropfer";
r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ - bm g4; id "Nightmare II-25 - Linienoeffnen";
7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - - bm a8=Q; id "Nightmare II-24 - Endspiel T&L&S vs D&L&S";
7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - - bm a6; id "Nightmare II-09 - Patt";
2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - - bm h4; id "Nightmare II-08 - Offene Linie";
r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - - bm Rg1; id "Nightmare II-30 - Koenigsangriff";
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq - bm h4; id "Nightmare II-27 - Initiative";
6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - - bm Qf5; id "Nightmare II-07 - Festung";
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - bm Rxb3+; id "Nightmare II-21 - Endspiel T vs T";
Dann Corbit wrote:These seem to me to be the ten hardest ones:

Code: Select all

4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - -
5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - -
r1q2k2/pppb3r/2n1pBp1/3pPp1p/3P1Q1P/P2B4/2P2PP1/R3K2R w KQ -
7q/P3RP2/2p2n2/8/N7/p7/2B5/k1K2b2 w - -
7k/1p5p/2qpn1PP/Pp1p4/8/3B2p1/3B1pP1/R4K2 w - -
2r1k1r1/3q4/p1nBpp1p/8/B5p1/4RbK1/PP1Q1P1P/2R5 w - -
r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - -
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w kq -
6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - -
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - -
Has anyone found an engine that will solve any of these fairly quickly (e.g. ten minutes on a decent machine)?
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Nightmare II (Test-Set)

Post by Vinvin »

Dann Corbit wrote:These seem to me to be the ten hardest ones:

Code: Select all

...
5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - -
...
Has anyone found an engine that will solve any of these fairly quickly (e.g. ten minutes on a decent machine)?
As pointed here http://www.talkchess.com/forum/viewtopi ... 004#684004 , Ng6 is found in 65 seconds by SF-MF on 6*4GHz.
19) Ne7-g6 Ne7-g6 * 65 Seconds
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Glarean
Posts: 262
Joined: Sun Oct 05, 2008 1:04 pm
Location: Switzerland
Full name: Walter Eigenmann

Re: Nightmare II (Test-Set)

Post by Glarean »

My overnight analysis:

r3rnk1/1bq1bpp1/pp2p3/3pP2Q/P4p2/1NNB1R2/1PP4P/2KR4 w - - 0 1

Analysis by Brainfish 240816 64 POPCNT

after 9 hours / 3Ghz / 4CPU / Deep 49

1. +- (2.70): 22.Tg1 f5 23.Txg7+ Kxg7 24.Th3.....
2. +- (2.12): 22.Th3 f5 23.Te1 f3 24.Dh8+ Kf7 25.Tg3

I think Rg1 is the very best move in this position
(Ok, who knows what's happen after 20 hours ;-)

Walter
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Glarean
Posts: 262
Joined: Sun Oct 05, 2008 1:04 pm
Location: Switzerland
Full name: Walter Eigenmann

Re: Nightmare II (Test-Set)

Post by Glarean »

Thanks for your friendly motivation :-)
And of course Dann is right, your collections of positions are always high quality and very challenging (as I would expect from someonelike you who is a connoisseur of fine music and chess). Thanks for your work.
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