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Up Topic The Rybka Lounge / Test Positions / Can any engine find?
- - By siah (***) Date 2011-11-16 11:05
Mate in 18.

8/p7/3KPpq1/3Rpp2/p3kp1N/1Pp1n2B/1pP1Rnr1/1rb5 w - - 0 1
Parent - - By BOND 007 (*) [at] Date 2011-11-16 11:31
hallo

8/p7/3KPpq1/3Rpp2/p3kp1N/1Pp1n2B/1pP1Rnr1/1rb5 w - - 0 1


Analysis by Zappa Mexico II:

1.Tc5!! Kd4 2.Sf3+ Ke4 3.Se1 Kd4 4.Td5+ Ke4 5.Tb5 a5 6.Tc5 Kd4 7.Sf3+ Ke4 8.Sh4 Kd4 9.Td5+ Ke4 10.Txa5 Ta1 11.Tc5 Kd4 12.Sf3+ Ke4 13.Se1 Kd4 14.Td5+ Ke4 15.Tb5 Sd3 16.cxd3+ Kd4 17.Tb4+ Sc4+ 18.Txc4#
  =  (0.00)   Tiefe: 12/41   00:00:01  1171kN
  +-  (#18)   Tiefe: 20/57   00:00:43  206mN

(NN,  16.11.2011)
Parent - By BigBen (****) Date 2011-11-17 08:38
Hi,
    I tested a few engines the fastest was critter and then zappa mexixo 2

New game
8/p7/3KPpq1/3Rpp2/p3kp1N/1Pp1n2B/1pP1Rnr1/1rb5 w - - 0 1


Analysis by Critter 1.2 64-bit SSE4:

1.Rc5 Kd4 2.Nf3+ Ke4 3.Ne1 Kd4 4.Rd5+ Ke4 5.Rb5 a5 6.Rc5 Kd4 7.Nf3+ Ke4 8.Nh4 Kd4 9.Rd5+ Ke4 10.Rxa5 Ra1 11.Rc5 Kd4 12.Nf3+ Ke4 13.Ne1 Kd4 14.Rd5+ Ke4 15.Rb5 Nd3 16.cxd3+ Kd4 17.Rb4+ Nc4+ 18.Rxc4#
+-  (#18)    Depth: 26/62   00:00:08  178mN

New game
8/p7/3KPpq1/3Rpp2/p3kp1N/1Pp1n2B/1pP1Rnr1/1rb5 w - - 0 1


Analysis by Zappa Mexico II x64:

1.Rc5 Kd4 2.Nf3+ Ke4 3.Ne1 Kd4 4.Rd5+ Ke4 5.Rb5 a5 6.Rc5 Kd4 7.Nf3+ Ke4 8.Nh4 Kd4 9.Rd5+ Ke4 10.Rxa5 Ra1 11.Rc5 Kd4 12.Nf3+ Ke4 13.Ne1 Kd4 14.Rd5+ Ke4 15.Rb5 Nd3 16.cxd3+
+-  (#18)    Depth: 19/57   00:00:25  145mN
- - By siah (***) Date 2011-11-21 08:08
Mate in 19.

4k3/8/3Q4/8/8/8/3p1pp1/3Kbrrb w - - 0 1
Parent - By Dadi Jonsson (Silver) [is] Date 2011-11-21 08:21
This has been posted before. Here it is with some discussion (see also the talkchess link): http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?pid=149544;
- - By siah (***) Date 2011-11-22 05:45
Mate in 19.

4r3/p1p1pPp1/P1P1P1P1/4K1P1/3p4/7p/3P1ppr/3R1nkq w - - 0 1
Parent - - By siah (***) Date 2011-12-11 06:35
First move is f7xe8N, and then it is simple. I don't know why engines can't find.
Parent - - By Master Om (*****) [in] Date 2011-12-11 09:03
Engines are not mate solver.

Use a mate solver.

ChestUCI Ver.5.2 - Prakash,O, Blitz 3m Bhubaneswar
4r3/p1p1pPp1/P1P1P1P1/4K1P1/3p4/7p/3P1ppr/3R1nkq w - - 0 1


Analysis by ChestUCI Ver.5.2:

1.fxe8N
  +-  (#19)   Depth: 19/19   00:00:00  0kN
1.fxe8N d3 2.Nf6 gxf6+ 3.Kf5 fxg5 4.g7 g4 5.g8N g3 6.Nf6 exf6 7.Kg6 f5 8.e7 f4 9.e8N f3 10.Nd6 cxd6 11.c7 d5 12.c8N d4 13.Nb6 axb6 14.a7 b5 15.a8N b4 16.Nb6 b3 17.Nc4 b2 18.Ne5 b1Q 19.Nxf3#
  +-  (#19)   Depth: 19/19   00:00:00  332kN
1.fxe8N
  +-  (#19)   Depth: 19/19   00:00:00  332kN
1.fxe8N d3 2.Nf6 gxf6+ 3.Kf5 fxg5 4.g7 g4 5.g8N g3 6.Nf6 exf6 7.Kg6 f5 8.e7 f4 9.e8N f3 10.Nd6 cxd6 11.c7 d5 12.c8N d4 13.Nb6 axb6 14.a7 b5 15.a8N b4 16.Nb6 b3 17.Nc4 b2 18.Ne5 b1Q 19.Nxf3#
  +-  (#19)   Depth: 19/19   00:00:00  332kN
1.fxe8N d3 2.Nf6 gxf6+ 3.Kf5 fxg5 4.g7 g4 5.g8N g3 6.Nf6 exf6 7.Kg6 f5 8.e7 f4 9.e8N f3 10.Nd6 cxd6 11.c7 d5 12.c8N d4 13.Nb6 axb6 14.a7 b5 15.a8N b4 16.Nb6 b3 17.Nc4 b2 18.Ne5 b1Q 19.Nxf3#
  +-  (#19)   Depth: 19/19   00:00:00  332kN

(Prakash, Bhubaneswar 11.12.2011)
Parent - - By siah (***) Date 2011-12-12 05:42

>Engines are not mate solver.


They should find during their regular process. while best moves end to mate.
Parent - - By Master Om (*****) [in] Date 2011-12-12 09:29
Yes and No. They should find win. may be or may not be in minimum moves.
Parent - - By siah (***) Date 2011-12-13 06:03
Best moves will lead to shortest mate and they should find mate.
Can you find another engine to find it?
Parent - By Master Om (*****) [in] Date 2011-12-13 08:05

>Best moves will lead to shortest mate and they should find mate.


No engine finds the best move always. If they find the win they dont bother to find the best moves to shortest mate.

>Can you find another engine to find it?


Not yet in SPV.
Parent - By Master Om (*****) [in] Date 2011-12-13 08:35

>Can you find another engine to find it?


Yes found one...

New game
4r3/p1p1pPp1/P1P1P1P1/4K1P1/3p4/7p/3P1ppr/3R1nkq w - - 0 1


Analysis by Critter 0.90 32-bit:

1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 6/5   00:00:00  0kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 7/6   00:00:00  0kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 8/7   00:00:00  1kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 9/8   00:00:00  1kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 10/8   00:00:00  1kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 11/12   00:00:00  2kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 12/14   00:00:00  3kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 13/17   00:00:00  4kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 14/19   00:00:00  7kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 15/19   00:00:00  11kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 16/19   00:00:00  19kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 17/22   00:00:00  30kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 18/22   00:00:00  47kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 19/24   00:00:00  79kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 20/26   00:00:00  138kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 21/29   00:00:00  224kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 22/29   00:00:00  353kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 23/31   00:00:00  521kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 24/32   00:00:00  747kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 25/35   00:00:00  1165kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 26/36   00:00:00  1889kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 27/39   00:00:00  3012kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 28/41   00:00:01  4708kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 29/41   00:00:01  7470kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 30/44   00:00:03  11639kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 31/45   00:00:05  20275kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 32/46   00:00:08  32074kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 33/48   00:00:14  55797kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 34/54   00:00:26  98252kN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 35/54   00:00:43  158mN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 36/56   00:01:09  246mN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 37/67   00:03:22  720mN
1.fxe8Q d3 2.Qxe7
  =  (0.00)   Depth: 38/67   00:05:26  1127mN
1.fxe8N
  =  (0.11 ++)   Depth: 38/67   00:07:06  1503mN
1.fxe8N
  =  (0.23 ++)   Depth: 38/67   00:07:06  1503mN
1.fxe8N
  +/=  (0.41 ++)   Depth: 38/67   00:07:06  1503mN
1.fxe8N
  +/=  (0.67 ++)   Depth: 38/67   00:07:09  1514mN
1.fxe8N
  +/-  (1.06 ++)   Depth: 38/67   00:07:13  1531mN
1.fxe8N
  +-  (1.64 ++)   Depth: 38/67   00:07:30  1606mN
1.fxe8N
  +-  (2.52 ++)   Depth: 38/67   00:07:30  1606mN
1.fxe8N
  +-  (3.84 ++)   Depth: 38/67   00:07:30  1606mN
1.fxe8N
  +-  (5.81 ++)   Depth: 38/67   00:07:30  1606mN
1.fxe8N
  +-  (8.77 ++)   Depth: 38/67   00:07:30  1606mN
1.fxe8N
  +-  (125.00 ++)   Depth: 38/67   00:07:30  1606mN
1.fxe8N d3 2.Nf6 gxf6+ 3.Kf5 fxg5 4.g7 g4 5.g8N g3 6.Nf6 exf6 7.Kg6 f5 8.e7 f4 9.e8N f3 10.Nd6 cxd6 11.c7 d5 12.c8N d4 13.Nb6 axb6 14.a7 b5 15.a8N b4 16.Nc7 b3 17.Ne6 b2 18.Nxd4 b1R 19.Nxf3#
  +-  (#19)   Depth: 38/67   00:07:34  1620mN
1.fxe8N d3 2.Nf6 gxf6+ 3.Kf5 fxg5 4.g7 g4 5.g8N g3 6.Nf6 exf6 7.Kg6 f5 8.e7 f4 9.e8N f3 10.Nd6 cxd6 11.c7 d5 12.c8N d4 13.Nb6 axb6 14.a7 b5 15.a8N b4 16.Nc7 b3 17.Ne6 b2 18.Nxd4 b1R 19.Nxf3#
  +-  (#19)   Depth: 39/67   00:07:40  1641mN
1.fxe8N d3 2.Nf6 gxf6+ 3.Kf5 fxg5 4.g7 g4 5.g8N g3 6.Nf6 exf6 7.Kg6 f5 8.e7 f4 9.e8N f3 10.Nd6 cxd6 11.c7 d5 12.c8N d4 13.Nb6 axb6 14.a7 b5 15.a8N b4 16.Nc7 b3 17.Ne6 b2 18.Nxd4 b1R 19.Nxf3#
  +-  (#19)   Depth: 40/67   00:07:50  1676mN

(Prakash, BBSR 13.12.2011)
Up Topic The Rybka Lounge / Test Positions / Can any engine find?

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