Author: Tord Romstad
Date: 08:54:22 10/30/03
Go up one level in this thread
On October 29, 2003 at 18:01:28, Jaime Benito de Valle Ruiz wrote:
>This is just a variation on another position posted not long ago, and on a
>typical position where the king's safety is at stake:
>
>[d]r1bq1rk1/1p2bppp/p3p3/1n2P3/4N3/1P1P1N2/PB4PP/R3QR1K w - - 0 1
>
>In the previous position, the 1.Nf6 move seems good even if the engine is not
>aware of its potential, but in this one the engine must understand the black's
>defence weaknesses in order to quickly find the line. Otherwise it's just a
>matter of plys!!
>
>Of course, there are other good moves for white, such as 1.a4, that eventually
>leads to 2.Nf6! But nothing seems faster and harder than 1.Nf6!
>
>Ruffian 1.05 doesn't see reaching depth 14 after 1:34 minutes with 128 Mb Hash
>(Athlon 1800+, 512 Mb DDR).
>
>I bet this is an easy test for the CM.
It is quite tough for Gothmog on a PIV 2.4GHz. The solution is found at
ply 13, after almost 12 minutes. My branching factor is rather bad here,
because the best move changes so often:
1 0.80 0.00 67 d3d4
2 0.59 0.00 704 a2a4 b5c7
3 1.09 0.01 1676 a2a4 b5c7 f3d4
4 0.55 0.05 7058 a2a4 b5c7 f3d4 c7d5
5 0.77 0.17 20265 a2a4 b5c7 d3d4 c7d5 e1g3
6 <= 0.75 0.55 63480 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8
6 <= 0.73 0.59 69108 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8
6 <= 0.70 0.67 80708 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8
6 >= 0.64 0.71 86093 a2a4 b5c7 f3d4 c7d5 e1g3 g8h8
6 >= 0.66 0.71 86669 a2a4 b5c7 f3d4 c7d5 e1g3 g8h8
6 <= 0.69 0.73 91077 a2a4 b5c7 f3d4 c7d5 e1g3 g8h8
6 <= 0.67 0.76 95327 a2a4 b5c7 f3d4 c7d5 e1g3 g8h8
6 <= 0.66 0.78 99007 a2a4 b5c7 f3d4 c7d5 e1g3 g8h8
6 0.66 0.78 99007 a2a4 b5c7 f3d4 c7d5 e1g3 g8h8
7 >= 0.66 0.86 109987 a2a4 b5c7 f3d4 c7d5 e1g3 g8h8 f1f2
7 >= 0.67 0.86 110798 a2a4 b5c7 f3d4 c7d5 e1g3 g8h8 f1f2
7 >= 0.73 0.89 114699 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
7 <= 0.86 1.00 131657 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
7 <= 0.84 1.01 135054 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
7 <= 0.81 1.02 139778 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
7 >= 0.75 1.03 141098 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
7 >= 0.77 1.03 142387 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
7 <= 0.80 1.08 151286 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
7 <= 0.78 1.12 159720 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
7 <= 0.77 1.14 164585 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
7 0.77 1.14 164585 a2a4 b5c7 d3d4 c7d5 e1g3 c8d7 f3d2
8 <= 0.75 3.41 508111 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8 f3d2 f7f6
8 <= 0.73 3.59 554576 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8 f3d2 f7f6
8 >= 0.72 3.78 590323 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8 f3g5 f7f5
8 >= 0.73 3.79 593503 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8 f3g5 f7f5
8 0.73 3.79 593503 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8 f3g5 f7f5
9 >= 0.73 9.29 1611091 e1e3 d8d5 f3d2 c8d7 a2a4 b5c7 e3g3 g8h8
d3d4
9 >= 0.75 9.46 1652998 e1e3 d8d5 f3d2 c8d7 a2a4 b5c7 e3g3 g8h8
d3d4
9 <= 0.80 11.37 2011184 e1e3 b5c7 f3g5 c7d5 e3g3 b7b5 d3d4 f7f6
g5h3
9 <= 0.78 11.45 2035267 e1e3 b5c7 f3g5 c7d5 e3g3 b7b5 d3d4 f7f6
g5h3
9 <= 0.75 11.63 2076149 e1e3 b5c7 f3g5 c7d5 e3g3 b7b5 d3d4 f7f6
g5h3
9 0.75 11.64 2076149 e1e3 b5c7 f3g5 c7d5 e3g3 b7b5 d3d4 f7f6
g5h3
10 <= 0.73 30.86 5655681 e1e3 b5c7 f3g5 c7d5 e3g3 h7h6 g5h3 g8h8
d3d4
10 <= 0.72 34.36 6400254 e1e3 b5c7 f3g5 c7d5 e3g3 h7h6 g5h3 g8h8
d3d4
10 <= 0.69 39.25 7458890 e1e3 b5c7 f3g5 c7d5 e3g3 h7h6 g5h3 e7h4
g3g4 f7f5
10 >= 0.62 43.20 8256501 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8 f3g5 f7f6
10 >= 0.64 43.26 8279734 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8 f3g5 f7f6
10 <= 0.67 45.07 8727225 a2a4 b5c7 d3d4 c7d5 e1g3 g8h8 f3g5 f7f6
10 <= 0.66 47.88 9374025 a2a4 b5c7 d3d4 c7d5 e1g3 d5e3 f1f2 e3f5
g3h3 d8d5
10 >= 0.66 47.97 9398741 a2a4 b5c7 d3d4 c7d5 e1g3 d5e3 f1f2 e3f5
g3f4 d8d5
10 0.66 47.98 9398741 a2a4 b5c7 d3d4 c7d5 e1g3 d5e3 f1f2 e3f5
g3f4 d8d5
11 >= 0.66 50.37 9873452 a2a4 b5c7 d3d4 c7d5 b2a3 c8d7 a3e7 d8e7
e1g3 b7b5 f3g5
11 >= 0.67 50.64 9959561 a2a4 b5c7 d3d4 c7d5 b2a3 c8d7 a3e7 d8e7
e1g3 b7b5 f3g5
11 >= 0.73 56.48 11086394 a2a4 b5c7 d3d4 c7d5 b2a3 c8d7 e1g3 e7a3
a1a3 b7b5 f3g5
11 <= 0.86 1:04 12619400 a2a4 b5c7 d3d4 c7d5 b2a3 c8d7 e1g3 e7a3
a1a3 g8h8 f3g5
11 <= 0.84 1:06 13078904 a2a4 b5c7 d3d4 c7d5 b2a3 c8d7 e1g3 e7a3
a1a3 g8h8 f3g5
11 <= 0.81 1:08 13488270 a2a4 b5c7 d3d4 c7d5 b2a3 c8d7 e1g3 e7a3
a1a3 g8h8 f3g5
11 <= 0.73 1:21 16204325 a2a4 b5c7 d3d4 c7d5 b2a3 e7a3 a1a3
11 0.73 1:21 16204325 a2a4 b5c7 d3d4 c7d5 b2a3 e7a3 a1a3
12 <= 0.72 3:13 37548012 a2a4 b5c7 d3d4 c7d5 b2a3 e7a3 a1a3 g8h8
12 <= 0.70 4:05 47935725 a2a4 b5c7 d3d4 c7d5 b2a3 e7a3 a1a3 g8h8
12 <= 0.67 5:53 68947673 a2a4 b5c7 d3d4 c7d5 b2a3 e7a3 a1a3 g8h8
12 >= 0.61 5:57 69744453 a2a4 b5c7 d3d4 c7d5 b2a3 e7a3 a1a3 g8h8
12 >= 0.62 5:57 69920591 a2a4 b5c7 d3d4 c7d5 b2a3 e7a3 a1a3 g8h8
e1g3 c8d7 f3g5 f7f6
12 <= 0.66 6:44 79712874 a2a4 b5c7 d3d4 c7d5 b2a3 e7a3 a1a3 g8h8
e1g3 c8d7 f3g5 f7f6
12 >= 0.66 6:59 82664986 d3d4 g8h8 a2a4 b5c7 b2a3 e7a3 a1a3 c7d5
e1g3 c8d7 f1c1
12 0.66 6:59 82664986 d3d4 g8h8 a2a4 b5c7 b2a3 e7a3 a1a3 c7d5
e1g3 c8d7 f1c1
13 >= 0.66 9:21 109784472 a2a4 b5c7 b2d4 c7d5 e1g3 c8d7 f3g5 h7h6
g5h3 e7h4
13 >= 0.67 11:54 139031540 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 c8d7
f1f6 d8f6 e5f7 f8f7 b2f6 f7f6 g3e5
13 >= 0.73 11:59 140372869 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 c8d7
f1f6 d8f6 e5f7 f8f7 b2f6 f7f6 g3e5
13 >= 0.88 12:11 142829722 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 c8d7
f1f6 d8f6
13 >= 1.12 12:38 148294596 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 c8d7
f1f6 d8f6
13 >= 1.52 13:19 156512802 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 c8d7
f1f6 d8f6
13 <= 2.06 13:35 159724949 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 b5d4
f1f6 d8f6 b2d4
13 <= 2.05 13:36 160058315 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 b5d4
f1f6 d8f6 b2d4
13 <= 2.02 13:37 160342210 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 b5d4
f1f6 d8f6 b2d4
13 >= 1.95 14:42 173186467 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 b5d4
f1f6 d8f6 b2d4
13 >= 1.97 14:53 175620117 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 b5d4
f1f6 d8f6 b2d4
13 <= 2.00 14:57 176415943 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 b5d4
f1f6 d8f6 b2d4
13 <= 1.98 14:57 176683311 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 b5d4
f1f6 d8f6 b2d4
13 >= 1.98 15:06 178658865 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 b5d4
f1f6 d8f6 b2d4
13 1.98 15:06 178658865 e4f6 g7f6 e1g3 g8h8 e5f6 e7f6 f3e5 b5d4
f1f6 d8f6 b2d4
Tord
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