Godzilla Endgame Chess Puzzles (2)

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

Godzilla Endgame Chess Puzzles (2)

Post by Glarean »

The second quartet of the series "Godzilla Endgame Chess Puzzles" has been released:
https://glarean-magazin.ch/2017/10/14/c ... e-staffel/

The GECP test contains very difficult chess positions - even for today's engines.
(Use "translate" at the bottom right).

The first edition of the GECP can be found here:
https://glarean-magazin.ch/2017/09/30/s ... s-puzzles/

You can copy/download all puzzles (FEN / PGN).

Greeting: Walter
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Ignacio
Posts: 177
Joined: Wed Mar 08, 2006 8:15 pm

Re: Godzilla Endgame Chess Puzzles (2)

Post by Ignacio »

Walter, one correction in number 6: after 1.Nf6 Rxd5 2.Nxd5 f5 now is mate in 8 with 3.Kb6 (no 3.Rc5).

Ignacio
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Godzilla Endgame Chess Puzzles (2)

Post by Vinvin »

Thanks Walter !
Here are the 8 first positions in EPD format with solution.

Nn6/8/6r1/8/K7/1P6/1R6/3k2N1 w - - bm Ka3;
1B1K1k2/4N2p/3pP1pP/6p1/p7/3N2b1/2r2p2/8 w - - bm Nc6;
k3K3/P3N3/8/ppp4p/4p1p1/6R1/rn1PP2B/8 w - - bm Ra3;
7k/3q4/1p3P2/3pP1N1/7N/6p1/1P4P1/3n1KBn w - - bm Bd4 ;

8/p3N3/1n3N1p/2n5/pkP3PP/8/3P4/K7 w - - bm g5;
k5b1/5p2/2K5/1p1B3N/3rp1p1/1pRp4/8/7n w - - bm Kb6+;
6K1/5p2/6p1/1N2qk1p/p6R/7P/Pp2N3/2B5 w - - bm Ned4+;
Nk3n2/1n4N1/2P5/6p1/5p2/6p1/8/4K3 w - - bm c7+;
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Godzilla Endgame Chess Puzzles (2)

Post by Vinvin »

This first 8 positions reminds me 6 older ones :

4k1br/1K1p1n1r/2p2pN1/P2p1N2/2P3pP/5B2/P2P4/8 w - - bm Kc8;
6br/1KNp1n1r/2p2p2/P1ppRP2/1kP3pP/3PBB2/PN1P4/8 w - - bm Bxc5+;
8/bp4Pk/4KB2/R6p/2pNp1P1/p7/3p1Pnq/2r5 w - - bm Nc6;
q1r5/k3ppp1/2R5/PP1KP2r/2p4Q/2p1p3/5pP1/3R4 w - - bm Qd4+;
1B1k4/3p4/1Kp5/PpP2p2/1PqP1P2/8/1P6/8 w - - bm a6;


[Event "StrateGems"]
[Site "?"]
[Date "2015.??.??"]
[Round "?"]
[White "Wieland Bruch (after G .Heathcote)"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "r7/1QpnN1Kp/p3P1b1/Nn1P1p2/3k3p/p4BP1/1rPPp2q/8 w - - 0 0"]
[PlyCount "13"]

1. d6 Nb6 2. dxc7 Nd6 3. Qc6 Ne4 (3... Ndc4 4. Qb5 $1 Rxb5 5. Nec6+ Kc5 6. Nb7#
) 4. Nb7 e1=Q (4... Ke5 5. Qd6+ $1 Nxd6 6. Nc6+ Kxe6 7. Nc5#) (4... Rb5 5. Qc3+
$1 Nxc3 6. Nc6+ Kc4 7. d3#) (4... Qxg3 5. Qd5+ $1 Nxd5 6. Nc6+ Kc4 7. Bxe2+ Qd3
8. Bxd3#) 5. Qc5+ $1 Nxc5 6. Nc6+ Kc4 7. Nd6# 1-0
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Godzilla Endgame Chess Puzzles (2)

Post by Vinvin »

+ this one : 4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8 w - - bm a8=B;
From here : http://www.talkchess.com/forum/viewtopi ... 012#728012
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Paloma
Posts: 1167
Joined: Thu Dec 25, 2008 9:07 pm
Full name: Herbert L

Re: Godzilla Endgame Chess Puzzles (2)

Post by Paloma »

About my test positions test

http://www.talkchess.com/forum/viewtopi ... 86&t=64914
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Godzilla Endgame Chess Puzzles (2)

Post by Vinvin »

I started a test with this 14 positions (GECP1+GECP2+6 old). The set is at the bottom of this post.

Condition 5 min/position, 6 pieces Syzygy (except for StingSF) , 6*4GHz.

4 engines (SF family) used :
Sting-sf-89 (no EGTB) : 9 of 14 matching moves
Stockfish_171011_x64_modern : 5 of 14 matching moves
SF-McBrain-27_x64_modern : 6 of 14 matching moves
Stockfish_171011_matefinder : 7 of 14 matching moves

Only 3 positions never found : #2, #11 and #12.

Position #13(a6) is easy to find (but the point is to find the mate).

I'll run a longer test with multiple runs later.

Details :

Code: Select all

Analyzing engine: Sting-sf-89
  1) Ka4-a3             b3-b4    
  2) Ne7-c6             Ne7xg6   
  3) Rg3-a3             Rg3-a3  * 121 Seconds
  4) Bg1-d4             Bg1-d4  * 290 Seconds
  5) g4-g5              Ka1-a2   
  6) Kc6-b6             Kc6-b6  * 170 Seconds
  7) Ne2-d4             Ne2-d4  * 4 Seconds
  8) c6-c7              c6-c7   * 0 Seconds
  9) Kb7-c8             Kb7-c8  * 2 Seconds
 10) Be3xc5             Be3xc5  * 8 Seconds
 11) Nd4-c6             g7-g8B   
 12) Qh4-d4             Qh4xe7   
 13) a5-a6              a5-a6   * 0 Seconds
 14) d5-d6              d5-d6   * 27 Seconds
9 of 14 matching moves
18/10/17 21:35:32, Total time: 00:50:22 Rated time: 35:22 = 2122 Seconds
--------------------------------------------------------------------------------

Analyzing engine: Stockfish_171011_x64_modern
  1) Ka4-a3             Ka4-a3  * 5 Seconds
  2) Ne7-c6             Ne7xg6   
  3) Rg3-a3             Rg3-a3  * 129 Seconds
  4) Bg1-d4             Nh4-g6   
  5) g4-g5              g4-g5   * 212 Seconds
  6) Kc6-b6             Nh5-f6   
  7) Ne2-d4             Bc1xb2   
  8) c6-c7              Ng7-e8   
  9) Kb7-c8             a5-a6    
 10) Be3xc5             Kb7-b6   
 11) Nd4-c6             g7-g8Q   
 12) Qh4-d4             Qh4xe7   
 13) a5-a6              a5-a6   * 0 Seconds
 14) d5-d6              d5-d6   * 94 Seconds
5 of 14 matching moves
18/10/17 22:48:29, Total time: 00:58:14 Rated time: 52:20 = 3140 Seconds
--------------------------------------------------------------------------------

Analyzing engine: SF-McBrain-27_x64_modern
  1) Ka4-a3             Ka4-a3  * 16 Seconds
  2) Ne7-c6             Ne7xg6   
  3) Rg3-a3             Rg3-b3   
  4) Bg1-d4             Nh4-g6   
  5) g4-g5              g4-g5   * 118 Seconds
  6) Kc6-b6             Nh5-f6   
  7) Ne2-d4             Ne2-d4  * 116 Seconds
  8) c6-c7              c6-c7   * 92 Seconds
  9) Kb7-c8             a5-a6    
 10) Be3xc5             Re5-e8   
 11) Nd4-c6             g7-g8Q   
 12) Qh4-d4             Qh4xe7   
 13) a5-a6              a5-a6   * 0 Seconds
 14) d5-d6              d5-d6   * 117 Seconds
6 of 14 matching moves
18/10/17 23:47:49, Total time: 00:54:34 Rated time: 47:39 = 2859 Seconds
--------------------------------------------------------------------------------

Analyzing engine: Stockfish_171011_matefinder
  1) Ka4-a3             Ng1-f3   
  2) Ne7-c6             Ne7xg6   
  3) Rg3-a3             Rg3-a3  * 169 Seconds
  4) Bg1-d4             Bg1-d4  * 22 Seconds
  5) g4-g5              g4-g5   * 261 Seconds
  6) Kc6-b6             Kc6-b6  * 171 Seconds
  7) Ne2-d4             Bc1xb2   
  8) c6-c7              c6-c7   * 3 Seconds
  9) Kb7-c8             a5-a6    
 10) Be3xc5             Re5-e8   
 11) Nd4-c6             g7-g8Q   
 12) Qh4-d4             Qh4xe7   
 13) a5-a6              a5-a6   * 0 Seconds
 14) d5-d6              d5-d6   * 54 Seconds
7 of 14 matching moves
19/10/17 01:03:47, Total time: 00:49:21 Rated time: 46:20 = 2780 Seconds
14 positions :

Code: Select all

Nn6/8/6r1/8/K7/1P6/1R6/3k2N1 w - - bm Ka3;
1B1K1k2/4N2p/3pP1pP/6p1/p7/3N2b1/2r2p2/8 w - - bm Nc6; 
k3K3/P3N3/8/ppp4p/4p1p1/6R1/rn1PP2B/8 w - - bm Ra3;
7k/3q4/1p3P2/3pP1N1/7N/6p1/1P4P1/3n1KBn w - - bm Bd4 ;
8/p3N3/1n3N1p/2n5/pkP3PP/8/3P4/K7 w - - bm g5;
k5b1/5p2/2K5/1p1B3N/3rp1p1/1pRp4/8/7n w - - bm Kb6+;
6K1/5p2/6p1/1N2qk1p/p6R/7P/Pp2N3/2B5 w - - bm Ned4+;
Nk3n2/1n4N1/2P5/6p1/5p2/6p1/8/4K3 w - - bm c7+;
4k1br/1K1p1n1r/2p2pN1/P2p1N2/2P3pP/5B2/P2P4/8 w - - bm Kc8;
6br/1KNp1n1r/2p2p2/P1ppRP2/1kP3pP/3PBB2/PN1P4/8 w - - bm Bxc5+;
8/bp4Pk/4KB2/R6p/2pNp1P1/p7/3p1Pnq/2r5 w - - bm Nc6;
q1r5/k3ppp1/2R5/PP1KP2r/2p4Q/2p1p3/5pP1/3R4 w - - bm Qd4+;
1B1k4/3p4/1Kp5/PpP2p2/1PqP1P2/8/1P6/8 w - - bm a6; 
r7/1QpnN1Kp/p3P1b1/Nn1P1p2/3k3p/p4BP1/1rPPp2q/8 w - - bm d6;
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Godzilla Endgame Chess Puzzles (2)

Post by Vinvin »

Paloma wrote:About my test positions test

http://www.talkchess.com/forum/viewtopi ... 86&t=64914
Yes, I know :?
I need to get a session of at least 2 hours to make a significant advance on the set. I didn't get such a motivation for a long time.
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peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Godzilla Endgame Chess Puzzles (2)

Post by peter »

Thanks a lot, Walter!

Nr. 5, the Garcia- study seems to be "cookable" to me:
[pgn]
[Event "Garcia 2000"]
[Site "?"]
[Date "2017.10.19"]
[Round "?"]
[White "GECP (05)"]
[Black "Endspiel S&S vs S&S"]
[Result "*"]
[SetUp "1"]
[FEN "8/p3N3/1n3N1p/2n5/pkP3PP/8/3P4/K7 w - -"]

1. g5 (1. Ka2 $2 Nxc4 2. d4 (2. Nc6+ Kb5 3. Nd4+ (3. Nxa7+
Kb6 $11) 3... Kb6 $11) 2... Ne6 3. Nf5 (3. d5 Nf4 $11)
3... Nf4 $11) 1... hxg5 2. h5 Nbd7 (2... Nb3+ 3. Kb1 Nxc4
4. Nc6+ Kb5 5. h6 $18) (2... Nxc4 3. h6 Nb3+ 4. Ka2 $18)
3. Nxd7 Nxd7 4. h6 Nf8 5. d3 g4 (5... Kc5 6. Nd5 $18)
6. Nd5+ Ka5 7. d4 g3 (7... Nh7 8. Ne3 $18) 8. Nf4 Kb4
9. d5 $18 *
[/pgn]

In the sideline

1. g5 hxg5 2. h5 Nxc4 3. h6 Nb3+ 4. Ka2 *

, if Black doesn't take on d2 now but plays 4... Nc1+,

[d]8/p3N3/5N1P/6p1/pkn5/8/K2P4/2n5 w - - 0 5

, White will have to block the black a-pawn with the King and then even after conversion of white h-pawn there isn't any progress to be seen to me anymore.

Here's Houdini on the position of the dia:

8/p3N3/5N1P/6p1/pkn5/8/K2P4/2n5 w - - 0 1

Analysis by Houdini 6.02 Pro x64-popc:

5.Kb1 a3 6.Sfd5+ Kb3 7.Sf5 Se5 8.Sde3 Se2 9.h7 Sf7 10.Sg4 Sh8 11.Se5 Kb4 12.Sh6 Kb3 13.Sf3 a2+ 14.Ka1 Sc1 15.d4 Sd3 16.Sg4 Sb4 17.Se3 Kc3 18.d5 Kd3 19.Sg4 Sxd5 20.Sxg5 Kd4 21.Sh6 Sf4 22.Kxa2 Sfg6 23.Sg4 Sf8 24.Ka3 Kd5 25.Kb3 Se6
= (0.00) Tiefe: 37/93 00:04:40 10372MN
...
5.Ka1 Sb3+ 6.Kb1 Sa3+ 7.Kb2 Sc4+ 8.Kc2 Sd4+ 9.Kd3 Se6 10.h7 Se5+ 11.Kc2 Sf7 12.Sf5 a3 13.d4 Sf8 14.Kb1 Kb3 15.d5 g4 16.Ka1 Kc3 17.Ka2 Kd3 18.Kxa3 Sxh7 19.Sxh7 Ke4 20.Sh4 Kxd5 21.Sf6+ Ke5 22.Sxg4+ Kf4 23.Sh2 Kg3 24.S4f3 Sd6 25.Kb4 Se8 26.Kb5 Sc7+ 27.Kc5 Kg2 28.Kc6 Se8 29.Kd5 Sf6+ 30.Kc5
= (0.03) Tiefe: 37/93 00:06:34 14503MN

I didn't have this one stored in my database, but somehow it looks familiar to me, maybe it's been in this forum or in an other one once already before
:?:
Peter.
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Godzilla Endgame Chess Puzzles (2)

Post by Vinvin »

peter wrote:Thanks a lot, Walter!

Nr. 5, the Garcia- study seems to be "cookable" to me:

In the sideline

1. g5 hxg5 2. h5 Nxc4 3. h6 Nb3+ 4. Ka2 *

, if Black doesn't take on d2 now but plays 4... Nc1+,

8/p3N3/5N1P/6p1/pkn5/8/K2P4/2n5 w - - 0 5

, White will have to block the black a-pawn with the King and then even after conversion of white h-pawn there isn't any progress to be seen to me anymore.
...
Good find !
2...Nxc4 is draw ! (a new test position :-) )
9m08s For McBrain to find a score <1.00 and 12 min to evaluate 0.00 (i7-6*4GHz).

[D]8/p3N3/1n3N2/2n3pP/pkP5/8/3P4/K7 b - - bm Nc4


SF-McBrain-27_x64_modern:
..
40/61+ 04:24 2 844 901k 10 745k +4,87 2. ... Nbd7 3.Nxd7
40/70- 04:44 3 079 814k 10 822k +4,40 2. ... Nxc4
40/70- 09:08 6 973 157k 12 702k +0,76 2. ... Nxc4
40/78 12:00 8 854 416k 12 293k 0,00 2. ... Nxc4 3.h6 Nb3+ 4.Ka2 Nc1+ 5.Kb1 a3 6.Nc6+ Kc5 7.h7 a2+ 8.Ka1 Kxc6 9.h8Q Nxd2 10.Qc8+ Kb5 11.Qb7+ Ka5 12.Qxa7+ Kb5 13.Qb7+ Ka5 14.Qc7+ Ka6 15.Qc6+ Ka7 16.Qc5+ Kb7 17.Qb5+ Ka7 18.Qa5+ Kb7 19.Qd5+ Ka7 20.Qf7+ Ka6 21.Qe6+ Ka7 22.Qe3+ Ka8 23.Qa3+ Kb7 24.Qb4+ Ka6 25.Qd6+ Ka7 26.Qa3+ Kb7
41/43 12:28 9 145 833k 12 223k 0,00 2. ... Nxc4 3.h6 Nb3+ 4.Ka2 Nc1+ 5.Kb1 a3 6.Nc6+ Kc5 7.h7 a2+ 8.Ka1 Kxc6 9.h8Q Nxd2 10.Qc8+ Kb5 11.Qb7+ Ka5 12.Qxa7+ Kb5 13.Qb7+ Ka5 14.Qc7+ Ka6 15.Qc6+ Ka7 16.Qa4+ Kb7 17.Kb2 Ndb3 18.Qd7+ Kb8 19.Qd8+ Ka7 20.Qc7+ Ka6 21.Qc4+ Kb7 22.Qf7+ Ka6 23.Qc4+
42/43 12:50 9 377 650k 12 169k 0,00 2. ... Nxc4 3.h6 Nb3+ 4.Ka2 Nc1+ 5.Kb1 a3 6.Nc6+ Kc5 7.h7 a2+ 8.Ka1 Kxc6 9.h8Q Nxd2 10.Qc8+ Kb5 11.Qb7+ Ka5 12.Qxa7+ Kb5 13.Qb7+ Ka5 14.Qc7+ Ka6 15.Qc6+ Ka7 16.Qa4+ Kb7 17.Kb2 Ndb3 18.Qd7+ Kb8 19.Qd8+ Ka7 20.Qc7+ Ka6 21.Qc4+ Kb7 22.Qf7+ Ka6 23.Qc4+
43/43 13:12 9 604 565k 12 114k 0,00 2. ... Nxc4 3.h6 Nb3+ 4.Ka2 Nc1+ 5.Kb1 a3 6.Nc6+ Kc5 7.h7 a2+ 8.Ka1 Kxc6 9.h8Q Nxd2 10.Qc8+ Kb5 11.Qb7+ Ka5 12.Qxa7+ Kb5 13.Qb7+ Ka5 14.Qc7+ Ka6 15.Qc6+ Ka7 16.Qa4+ Kb7 17.Kb2 Ndb3 18.Qd7+ Kb8 19.Qd8+ Ka7 20.Qc7+ Ka6 21.Qc4+ Kb7 22.Qf7+ Ka6 23.Qc4+
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