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Subject: Re: cute move by Yace

Author: Dann Corbit

Date: 19:55:43 07/24/01

Go up one level in this thread


On July 24, 2001 at 22:19:09, Jon Dart wrote:

>From a test game, Yace-Arasan:
>
>[D] 1k1r1bnr/ppp1p2p/2q2p2/4P3/2N3p1/3PB3/PP3PPP/2RQ1RK1 w - -
>
>Qxg4 isn't bad but Yace played Nd6! Even more amazing, it found
>it in a few seconds. This is part of the log output:
>
>159410206 <second: 1 31 0 26 t  15.exf6 Nxf6 {0}
>159410206 <second: 1 81 0 70 t  15.Qxg4 Rxd3 {0}
>159410206 <second: 1 90 0 96 t  15.Qb3 {0}
>159410206 <second: 1 207 0 97 t  15.Nd6 Qd5H 16.Bxa7+H Kxa7H 17.Qa4+H Kb8H
>18.Nb5H Qxe5H 19.d4H Rxd4H 20.Qa7+H Kc8H 21.R\
>xc7+H Qxc7H 22.Nxc7H Rd2H {HT} {151}
>159410206 <second: 1 207 0 127 .  15.Nd6 Qd5 16.Bxa7+ Kxa7 17.Qa4+ Kb8 18.Nb5
>Qxe5 19.d4 Rxd4 20.Qa7+ Kc8 21.Rxc7+ Qxc7 \
>22.Nxc7 Rd2 {HT} {151}

It takes Yace 2.5 seconds to choose Nd6:

white ( 1): setboard 1k1r1bnr/ppp1p2p/2q2p2/4P3/2N3p1/3PB3/PP3PPP/2RQ1RK1 w - -
Stored 7 learned positions into hash table
white ( 1): go
usetime = 998.00, mintime = 998.00 maxtime = 998.00 tl 998.00 ml 0
        39   0.024   0.81  1t  1.Qxg4 Rxd3 {0}
       107   0.027   0.93  1t  1.b3 {0}
       141   0.028   0.93  1.  1.b3 {0}
       321   0.030   0.68  2t  1.b3 e6 2.Qxg4 Rxd3 {0}
       358   0.032   0.81  2t+ 1.Qxg4 Rxd3 {0}
       393   0.033   0.81  2t  1.Qxg4 Rxd3 {0}
      2255   0.041   0.81  2.  1.Qxg4 Rxd3 {0}
      4508   0.054   0.91  3t  1.Qxg4 Rxd3 2.e6 Qd5 {0}
      6516   0.062   0.91  3.  1.Qxg4 Rxd3 2.e6 Qd5 {0}
     21756   0.104   1.20  4t  1.Qxg4 fxe5 2.Qe4 Qxe4 3.dxe4 {0}
     31088   0.134   1.20  4.  1.Qxg4 fxe5 2.Qe4 Qxe4 3.dxe4 {0}
     88798   0.300   1.01  5t  1.Qxg4 Qd5 2.Rc3 b5 3.Rb3 fxe5H {0}
    155939   0.488   1.01  5.  1.Qxg4 Qd5 2.Rc3 b5 3.Rb3 fxe5 {0}
    236853   0.703   1.08  6t  1.Qxg4 Qd5 2.Qe4 Qxd3 3.Qxd3 Rxd3 4.e6 {0}
    385311   1.056   1.08  6.  1.Qxg4 Qd5 2.Qe4 Qxd3 3.Qxd3 Rxd3 4.e6 {0}
    689795   1.839   1.24  7t  1.Qxg4 Qd5 2.d4 e6 3.a4 f5 4.Qf4 {80}
    987976   2.447   1.25  7t+ 1.Nd6 Qd5 2.Bxa7+ Kxa7 3.Qa4+ Kb8 4.Nb5 Kc8
                               5.Nxc7 fxe5 6.Nxd5+ Kb8 {731}
   1022536   2.538   1.48  7++ 1.Nd6 Qd5 2.Bxa7+ Kxa7 3.Qa4+ Kb8 4.Nb5 Kc8
                               5.Nxc7 fxe5 6.Nxd5+ Kb8 {731}
   1125540   2.854   1.83  7t  1.Nd6 Qd5 2.Bxa7+ Kxa7 3.Qa4+ Kb8 4.Nb5 Qxe5
                               5.Rfe1 Qxe1+ 6.Rxe1 e5 7.Qa7+ Kc8 {151}
   1213731   3.197   1.83  7.  1.Nd6 Qd5 2.Bxa7+ Kxa7 3.Qa4+ Kb8 4.Nb5 Qxe5
                               5.Rfe1 Qxe1+ 6.Rxe1 e5 7.Qa7+ Kc8 {151}
   1478555   3.675   2.08  8t  1.Nd6 Qd5 2.Bxa7+ Kxa7 3.Qa4+ Kb8 4.Nb5 Qxe5
                               5.d4 Rxd4 6.Qa7+ Kc8 7.Rxc7+ Qxc7 8.Nxc7 Rd2
                               {151}
   1810041   4.348   2.08  8.  1.Nd6 Qd5 2.Bxa7+ Kxa7 3.Qa4+ Kb8 4.Nb5 Qxe5
                               5.d4 Rxd4 6.Qa7+ Kc8 7.Rxc7+ Qxc7 8.Nxc7 Rd2
                               {151}
   2398049   5.606   2.48  9++ 1.Nd6 Qd5 2.Bxa7+ Kxa7 3.Qa4+ Kb8 4.Nb5 Qxe5
                               5.Rfe1 Qxe1+ 6.Rxe1 Rd6 7.Nxd6 exd6 {311}
   3055422   6.801   2.48  9t  1.Nd6 Qd5 2.Bxa7+ Kxa7H 3.Qa4+H Kb8H 4.Nb5H
                               Qxe5H 5.Nd6H {HT}
   4159377   8.925   2.48  9.  1.Nd6 Qd5 2.Bxa7+ Kxa7 3.Qa4+ Kb8 4.Nb5 Qxe5
                               5.Nd6
   8405743  18.486   2.84 10t  1.Nd6 Qxc1 2.Qxc1 exd6 3.exf6 Nxf6 4.Bd4 Be7
                               5.Re1 c5 6.Bc3 Rd7 {161}
  13309017  27.658   2.84 10.  1.Nd6 Qxc1 2.Qxc1 exd6 3.exf6 Nxf6 4.Bd4 Be7
                               5.Re1 c5 6.Bc3 Rd7 {161}
  22158800  46.759   2.84 11t  1.Nd6 Qxc1 2.Qxc1 exd6 3.exf6 Nxf6 4.Bd4 Be7
                               5.Re1 Rd7 6.Rxe7 Rxe7 7.Bxf6 {HT} {351}

It takes crafty 17 seconds:
White(1): setboard 1k1r1bnr/ppp1p2p/2q2p2/4P3/2N3p1/3PB3/PP3PPP/2RQ1RK1 w - -
White(1): go
              clearing hash tables
              time surplus   0.00  time limit 16:39 (16:39)
         nss  depth   time  score   variation (1)
                6     0.41   0.83   1. Qxg4 Qd5 2. Qe4 Qxd3 3. Qxd3 Rxd3
                                    4. Rfd1
         6     83      41 166801  1. Qxg4 Qd5 2. Qe4 Qxd3 3. Qxd3 Rxd3 4. Rfd1
                6->   0.54   0.83   1. Qxg4 Qd5 2. Qe4 Qxd3 3. Qxd3 Rxd3
                                    4. Rfd1
         6     83      54 220295  1. Qxg4 Qd5 2. Qe4 Qxd3 3. Qxd3 Rxd3 4. Rfd1
                7     0.92   0.98   1. Qxg4 Qd5 2. Qe4 b5 3. Na5 Qxe4 4.
                                    dxe4 fxe5
         7     98      92 393248  1. Qxg4 Qd5 2. Qe4 b5 3. Na5 Qxe4 4. dxe4 fxe5

                7->   1.12   0.98   1. Qxg4 Qd5 2. Qe4 b5 3. Na5 Qxe4 4.
                                    dxe4 fxe5
         7     98     112 492208  1. Qxg4 Qd5 2. Qe4 b5 3. Na5 Qxe4 4. dxe4 fxe5

                8     3.03   1.03   1. Qxg4 Nh6 2. Qe4 Qe6 3. Na5 Qa6 4.
                                    Nc4 Qxa2
         8    103     303 1418935  1. Qxg4 Nh6 2. Qe4 Qe6 3. Na5 Qa6 4. Nc4 Qxa2

                8->   3.65   1.03   1. Qxg4 Nh6 2. Qe4 Qe6 3. Na5 Qa6 4.
                                    Nc4 Qxa2
         8    103     365 1737646  1. Qxg4 Nh6 2. Qe4 Qe6 3. Na5 Qa6 4. Nc4 Qxa2

                9    15.69   1.24   1. Qxg4 Nh6 2. Qe4 Qe6 3. Na5 Qd5 4.
                                    Qxd5 Rxd5 5. exf6 exf6 6. Bxh6 Bxh6
         9    124    1569 7692670  1. Qxg4 Nh6 2. Qe4 Qe6 3. Na5 Qd5 4. Qxd5 Rxd
5 5. exf6 exf6 6. Bxh6 Bxh6
                9    17.42     ++   1. Nd6!!
         9    164    1742 8579609  1. Nd6!!
                9    18.55   1.75   1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8
                                    4. Nb5 Qxe5 5. Rfe1 Bh6 6. Rxe5 Bxc1
         9    175    1855 9201276  1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8 4. Nb5 Q
xe5 5. Rfe1 Bh6 6. Rxe5 Bxc1
                9->  19.07   1.75   1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8
                                    4. Nb5 Qxe5 5. Rfe1 Bh6 6. Rxe5 Bxc1
         9    175    1907 9514989  1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8 4. Nb5 Q
xe5 5. Rfe1 Bh6 6. Rxe5 Bxc1
               10    20.22   1.75   1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8
                                    4. Nb5 Qxe5 5. Rfe1 Bh6 6. Rxe5 Bxc1
        10    175    2022 10140728  1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8 4. Nb5
Qxe5 5. Rfe1 Bh6 6. Rxe5 Bxc1
               10->  28.90   1.75   1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8
                                    4. Nb5 Qxe5 5. Rfe1 Bh6 6. Rxe5 Bxc1
        10    175    2890 14584659  1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8 4. Nb5
Qxe5 5. Rfe1 Bh6 6. Rxe5 Bxc1
               11    30.28     ++   1. Nd6!!
        11    215    3028 15255092  1. Nd6!!
               11    43.06   2.74   1. Nd6 Qxc1 2. Qxc1 exd6 3. e6 Be7
                                    4. Qc4 h5 5. Rc1 c6 6. Bf4
        11    274    4306 22428442  1. Nd6 Qxc1 2. Qxc1 exd6 3. e6 Be7 4. Qc4 h5
 5. Rc1 c6 6. Bf4
               11->  47.54   2.74   1. Nd6 Qxc1 2. Qxc1 exd6 3. e6 Be7
                                    4. Qc4 h5 5. Rc1 c6 6. Bf4
        11    274    4754 25225653  1. Nd6 Qxc1 2. Qxc1 exd6 3. e6 Be7 4. Qc4 h5
 5. Rc1 c6 6. Bf4
               12    47.54   1/39*  1. Nd6


It takes Beowulf a full minute (ouch):
Position 1 - White to play
--------------------------
ID =
FEN = 1k1r1bnr/ppp1p2p/2q2p2/4P3/2N3p1/3PB3/PP3PPP/2RQ1RK1 w - -

. k . r . b n r
p p p . p . . p
. . q . . p . .
. . . . P . . .
. . N . . . p .
. . . P B . . .
P P . . . P P P
. . R Q . R K .

Current Position = 0.35
Number of Possible Moves = 39

  6     60     67      79297   h2h3 c6d7 h3g4 d7d3 d1a4 a7a6
  6     91    117     143240   d1g4 f6e5 g4g3 g8f6 c4e5 c6e8
  7    102    498     650723   d1g4 c6a6 g4e4 e7e6 e3d4 c7c5 d4c3 a6a2 e5f6
  8     86   1201    1611212   d1g4 f6e5 c4e5 c6d5 g4e4 g8f6 e4d5 f6d5
  9    112   5633    7285872   d1g4 c6a6 g4e4 f6e5 e4e5 g8f6 e3f4 d8c8 a2a3
  9    115   6295    8126410   c4d6 c6d5 e3a7 b8a8 d1a4 b7b5 d6b5 d5e5
  9    119   6813    8777542   c4d6 c6c1 d1c1 e7d6 e5e6 g8e7 e3a7 b8a7 c1c7
 10    148   9439   12060494   c4d6 c6c1 e3a7 b8a7 d6b5 a7b6 d1c1 d8e8 e5f6 h7h6
 10    170   9913   12675959   c4d6 c6c1 e3a7 b8a7 d6b5 a7b8 d1c1 c7c6 b5c3 f8h6
c1d1 f6e5 d1g4

45 seconds for ExChess:
White to Move  Book Move(s): Nd6
  Test Position:
  1.   0.76     0    74929   1. Qb3
  1.   0.76     0    74967   1. Qb3
  2.   ++       0    75086   1. Qxg4
  2.   0.50     0    75165   1. Qb3 fxe5 2. Nxe5
  2.   0.76     0    75275   1. Qxg4 Rxd3
  2.   0.76     0    75311   1. Qxg4 Rxd3
  3.   ++       0    75527   1. Qxg4
  3.   0.83     0    75805   1. Qxg4 Rxd3 2. Rcd1
  3.   0.83     0    75885   1. Qxg4 Rxd3 2. Rcd1
  4.   ++       0    77501   1. Qxg4
  4.   --
  4.   0.83     0    77941   1. Qxg4 Rxd3 2. Rcd1
  4.   0.83     0    78021   1. Qxg4 Rxd3 2. Rcd1
  5.   --
  5.   0.57     0    86556   1. Qxg4 fxe5 2. Qf5 Qf6 3. Qxe5 Rxd3
  5.   ++       0    97443   1. Bf4
  5.   0.57     0    97444   1. Qxg4
  5.   0.62     0    97453   1. Bf4
  5.   0.75     0   100362   1. Qb3 Qd5 2. Qa3 Kc8 3. Bf4 Qxd3 4. Qxa7
  5.   0.75     0   100376   1. Qb3 Qd5 2. Qa3 Kc8 3. Bf4 Qxd3 4. Qxa7
  6.   0.62     0   114930   1. Qb3 Qa6 2. Rfe1 fxe5 3. Nxe5
  6.   0.68     0   151002   1. Qxg4 fxe5 2. Qe4 Qxe4 3. dxe4 Nf6 4. Rfd1
  6.   0.68     0   201424   1. Qxg4 fxe5 2. Qe4 Qxe4 3. dxe4 Nf6 4. Rfd1
  7.   ++       0   274602   1. Qxg4
  7.   1.40     1   436721   1. Qxg4 fxe5 2. Qg3 Qb5 3. Qxe5 Qxe5 4. Nxe5 e6
  7.   1.40     1   521261   1. Qxg4 fxe5 2. Qg3 Qb5 3. Qxe5 Qxe5 4. Nxe5 e6
  8.   1.20     3  1122852   1. Qxg4 Qd5 2. Rfd1 b5 3. Na5 h5 4. Bxa7+ Kxa7 5.
Rxc7+ Ka8
  8.   1.20     4  1488831   1. Qxg4 Qd5 2. Rfd1 b5 3. Na5 h5 4. Bxa7+ Kxa7 5.
Rxc7+ Ka8
  9.   ++      10  3074715   1. Qxg4
  9.   1.50    22  6988273   1. Qxg4 Qd5 2. d4 e6 3. Qe2 Bg7 4. Rfd1 Ne7 5. Bf4
  9.   1.50    26  8255003   1. Qxg4 Qd5 2. d4 e6 3. Qe2 Bg7 4. Rfd1 Ne7 5. Bf4
 10.   1.48    40 12513271   1. Qxg4 Qd5 2. Bf4 fxe5 3. Bxe5 Nf6 4. Qg3 Qd7 5.
Ne3 Qd6
 10.   1.74    45 14117615   1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8 4. Nb5 Qxe5 5.
Rfe1 Bh6 6. Rxe5 Bxc1 7. Re2
 10.   1.74    46 14510174   1. Nd6 Qd5 2. Bxa7+ Kxa7 3. Qa4+ Kb8 4. Nb5 Qxe5 5.
Rfe1 Bh6 6. Rxe5 Bxc1 7. Re2
 11.   ++      50 15723025   1. Nd6
 11.   2.24    63 20257386   1. Nd6 Qxc1 2. Qxc1 exd6 3. exf6 Nxf6 4. Bxa7+ Kxa7
5. Qg5 Be7 6. Qe3+ Ka8 7. Qxe7


7 seconds for Pepito:
Son correctas: Nd6


    +----+----+----+----+----+----+----+----+
 8  |    | *R |    | *T |    | *A | *C | *T |
    +----+----+----+----+----+----+----+----+
 7  | *P | *P | *P |    | *P |    |    | *P |
    +----+----+----+----+----+----+----+----+
 6  |    |    | *D |    |    | *P |    |    |
    +----+----+----+----+----+----+----+----+
 5  |    |    |    |    |  P |    |    |    |
    +----+----+----+----+----+----+----+----+
 4  |    |    |  C |    |    |    | *P |    |
    +----+----+----+----+----+----+----+----+
 3  |    |    |    |  P |  A |    |    |    |
    +----+----+----+----+----+----+----+----+
 2  |  P |  P |    |    |    |  P |  P |  P |
    +----+----+----+----+----+----+----+----+
 1  |    |    |  T |  D |    |  T |  R |    |
    +----+----+----+----+----+----+----+----+
      a    b    c    d    e    f    g    h

Fase: MedioIni
 1    88    13        7  Dd1xg4 Td8xd3
 1    99    14       18  Dd1-b3
 1    99    14       55  Dd1-b3
 2    88    15      203  Dd1xg4 Td8xd3
 2    88    15      633  Dd1xg4 Td8xd3
 3    92    16     2500  Dd1xg4 Td8xd3 Cc4-d2
 4    79    21    11080  Dd1xg4 Td8xd3 Cc4-a5 Dc6-d5
 5   103    29    32754  Dd1xg4 Dc6-a4 Tc1-a1 Td8xd3 b3
 6   129    61   114367  Dd1xg4 Dc6-d5 d4 b5 Cc4-a3 f6xe5 d4xe5 Dd5xe5
 7   129   130   306497  Dd1xg4 Dc6-d5 d4 b5 Cc4-a3 f6xe5 d4xe5 Dd5xe5
 8   123   285   762878  Dd1xg4 Dc6-d5 d4 h5 Dg4-f5 e6 Df5-g6 Af8-e7
 9   168   717  1989863  Cc4-d6 Dc6-d5 Ae3xa7 Rb8xa7 Dd1-a4 Ra7-b8 Cd6-b5 Dd5xe5
Tf1-e1 Af8-h6 Te1xe5 Ah6xc1
 9   168   787  2195086  Cc4-d6 Dc6-d5 Ae3xa7 Rb8xa7 Dd1-a4 Ra7-b8 Cd6-b5 Dd5xe5
Tf1-e1 Af8-h6 Te1xe5 Ah6xc1
10   168  1207  3557155  Cc4-d6 Dc6-d5 Ae3xa7 Rb8xa7 Dd1-a4 Ra7-b8 Cd6-b5 Dd5xe5
Tf1-e1 Af8-h6 Te1xe5 Ah6xc1 Da4-a7 Rb8-
c8

Phalanx 20 seconds:
1k1r1bnr/ppp1p2p/2q2p2/4P3/2N3p1/3PB3/PP3PPP/2RQ1RK1 w - - bm Nd6;
    -> increment adds 1440 s to soft time limit
    -> soft time limit 3154.28 s
    -> hard time limit 41599.9 s
  5 ->   0:00.56    83865   0 turns
  6    219   100   160719  Qd1xg4  Qc6-a4  Qg4-e2  Bf8-g7  Pb2-b3
  6 ->   0:02.02   317207   0 turns
  7    221   427   754173  Qd1xg4  Ph7-h5  Qg4-f5
  7 ->   0:07.76  1354920   0 turns
  8    200  1669  2940089  Qd1xg4  Qc6-d5  Pd3-d4  Pf6xe5  Pd4xe5  Ng8-h6
                           Qg4-g5  Rh8-g8
  8    205  2086  3615864  Nc4-d6  !
  8    252  2169  3775410  Nc4-d6  Qc6-d5  Be3xa7  Kb8xa7  Qd1-a4  Ka7-b8
                           Nd6-b5  Qd5xe5  Rf1-e1  Qe5xe1  Rc1xe1  Pe7-e5
                           Qa4-a7  Kb8-c8
  8 ->   0:24.82  4303849   1 turn
  9    252  2954  5135016  Nc4-d6  Qc6-d5  Be3xa7  Kb8xa7  Qd1-a4  Ka7-b8
                           Nd6-b5  Qd5xe5




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