Author: Robert Hyatt
Date: 13:06:45 09/24/01
Go up one level in this thread
On September 24, 2001 at 06:59:42, Uri Blass wrote:
>On September 24, 2001 at 01:41:30, Michel Langeveld wrote:
>
>>a3 seems to be also a very good move
>>
>>======================================================================
>>! ECM.1354 !
>>======================================================================
>>
>> +---+---+---+---+---+---+---+---+
>> 8 | *R| | | *Q| | *R| *K| |
>> +---+---+---+---+---+---+---+---+
>> 7 | *P| | | | | | *P| *P|
>> +---+---+---+---+---+---+---+---+
>> 6 | *B| *N| | *P| | *P| | |
>> +---+---+---+---+---+---+---+---+
>> 5 | | | *P| P | | | | |
>> +---+---+---+---+---+---+---+---+
>> 4 | | *B| P | | N | P | | |
>> +---+---+---+---+---+---+---+---+
>> 3 | | | | B | | R | | |
>> +---+---+---+---+---+---+---+---+
>> 2 | P | B | Q | | | | P | P |
>> +---+---+---+---+---+---+---+---+
>> 1 | R | | | | | | K | |
>> +---+---+---+---+---+---+---+---+
>> a b c d e f g h
>>
>>solution 1. Ng5
>> time surplus 0.00 time limit 20:00 (20:00)
>> nss depth time score variation (1)
>> 7 0.33 0.56 1. Ng3 Kh8 2. a3 Ba5 3. Re3 Re8 4.
>> Rxe8+ Qxe8 5. Rb1
>> 7-> 0.71 0.56 1. Ng3 Kh8 2. a3 Ba5 3. Re3 Re8 4.
>> Rxe8+ Qxe8 5. Rb1
>> 8 0.88 0.42 1. Ng3 Kh8 2. a3 Ba5 3. Re3 Re8 4.
>> Nf5 Rxe3 5. Nxe3
>> 8 1.54 0.47 1. Nf2 Kh8 2. Rh3 h6 3. Rb1 Re8 4.
>> Bg6 Re7
>> 8-> 4.18 0.47 1. Nf2 Kh8 2. Rh3 h6 3. Rb1 Re8 4.
>> Bg6 Re7
>> 9 5.11 0.45 1. Nf2 h6 2. a3 Ba5 3. Re3 Re8 4. Re6
>> Rb8 5. Rb1
>> 9 9.28 0.52 1. Rh3 h6 2. a3 Ba5 3. Rb1 Rb8 4. Re3
>> Re8 5. Qe2
>> 9 14.25 0.54 1. Re3 Rb8 2. Ng3 Re8 3. Re6 Kf8 4.
>> Nf5 Nc8 5. Rb1
>> 9-> 15.43 0.54 1. Re3 Rb8 2. Ng3 Re8 3. Re6 Kf8 4.
>> Nf5 Nc8 5. Rb1
>> 10 31.38 0.48 1. Re3 Qd7 2. Ng3 Kh8 3. a3 Ba5 4.
>> Rf1 Rae8 5. Bf5 Qc7 <HT>
>> 10 46.82 ++ 1. Ng5!!
>> 10 1:02 2.45 1. Ng5 h6 2. Ne6 Qd7 3. Nxf8 Rxf8 4.
>> a3 Ba5 5. Bh7+ Kh8 6. Bf5
>> 10-> 1:03 2.45 1. Ng5 h6 2. Ne6 Qd7 3. Nxf8 Rxf8 4.
>> a3 Ba5 5. Bh7+ Kh8 6. Bf5
>> 11 1:14 2.45 1. Ng5 h6 2. Ne6 Qc8 3. Nxf8 Qxf8 4.
>> a3 Ba5 5. Re3 Re8 6. Re6
>> 11-> 1:19 2.45 1. Ng5 h6 2. Ne6 Qc8 3. Nxf8 Qxf8 4.
>> a3 Ba5 5. Re3 Re8 6. Re6
>> 12 2:07 ++ 1. Ng5!!
>> 12 5:37 3.08 1. a3 Ba5 2. Ng5 Re8 3. Bxh7+ Kf8 4.
>> Bg6 Nxc4 5. Rh3 Qb6 6. Rh8+ Ke7 7.
>> Rxe8+ Rxe8 8. Qe4+ Ne5 9. Bxe5 dxe5
>> 10. Bxe8 Kxe8
>> 12-> 5:44 3.08 1. a3 Ba5 2. Ng5 Re8 3. Bxh7+ Kf8 4.
>> Bg6 Nxc4 5. Rh3 Qb6 6. Rh8+ Ke7 7.
>> Rxe8+ Rxe8 8. Qe4+ Ne5 9. Bxe5 dxe5
>> 10. Bxe8 Kxe8
>> 13 6:18 3.37 1. a3 Ba5 2. Ng5 Re8 3. Bxh7+ Kf8 4.
>> Bg6 Nxc4 5. Bxe8 Qxe8 6. Ne6+ Kg8 7.
>> Rg3 Kh8 8. Rxg7 Nxb2 9. Qxb2
>> 13-> 6:56 3.37 1. a3 Ba5 2. Ng5 Re8 3. Bxh7+ Kf8 4.
>> Bg6 Nxc4 5. Bxe8 Qxe8 6. Ne6+ Kg8 7.
>> Rg3 Kh8 8. Rxg7 Nxb2 9. Qxb2
>> 14 8:47 -- 1. a3
>> 14 9:35 3.05 1. a3 Ba5 2. Ng5 h6 3. Bh7+ Kh8 4.
>> Rh3 Nxc4 5. Bg8 f5 6. Bf7 Qxg5 7. fxg5
>> Rxf7 8. gxh6 Nxb2 9. hxg7+ Kg8 10.
>> Qxb2 Rxg7
>
>
>Crafty can see a bigger score for white after 1.Ng5 at depthes 10,11 so I do not
>understand the fact that it could not find 1.Ng5 at depth 13 based on the
>analysis
>
>I also do not understand the +2.45 score at depthes 10,11 because my Crafty18.10
>can find signidicantly bigger score at these depthes in the root position
>
>New position
>[D]r2q1rk1/p5pp/bn1p1p2/2pP2N1/1bP2P2/3B1R2/PBQ3PP/R5K1 b - - 0 1
>
>Analysis by Crafty 18.10:
>
>1...fxg5 2.Bxh7+
> -+ (-2.21) Depth: 1/10 00:00:00
>1...fxg5 2.Bxh7+ Kh8
> -+ (-2.11) Depth: 2/10 00:00:00
>1...fxg5 2.Bxh7+ Kh8 3.a3
> -+ (-2.08) Depth: 3/10 00:00:00
>1...fxg5 2.a3 Ba5 3.Bxh7+ Kh8
> -+ (-1.99) Depth: 4/11 00:00:00
>1...fxg5 2.a3 Ba5 3.Bxh7+ Kh8 4.Qg6 Nxc4 5.Bxg7#
> -+ (-2.01) Depth: 5/19 00:00:00
>1...fxg5 2.Bxh7+ Kh8 3.Qg6 Qe7 4.Qh6 Rxf4 5.Bf5+ Kg8 6.Be6+ Kf8 7.Rxf4+ gxf4
>8.Qxf4+
> -+ (-1.77) Depth: 6/19 00:00:00 58kN
>1...fxg5 2.Bxh7+ Kh8 3.Rh3 Rf6 4.a3 Ba5 5.Bxf6 Qxf6
> ³ (-0.34) Depth: 7/20 00:00:01 333kN
>1...fxg5 2.Bxh7+ Kh8 3.Rh3 Bc3 4.Bf5+ Kg8 5.Be6+ Rf7 6.Bxc3 Nxc4
> +- (4.04) Depth: 8/25 00:00:03 1181kN
>1...Re8
> +- (3.64) Depth: 8/25 00:00:03 1498kN
>1...Re8 2.Bxh7+ Kf8 3.Ne6+ Rxe6 4.dxe6 Nxc4 5.a3 Bd2 6.Be4
> +- (3.50) Depth: 8/25 00:00:05 2022kN
>1...h6
> +- (3.10) Depth: 8/25 00:00:06 2711kN
>1...h6 2.Ne6 Qe7 3.Rg3 Rf7 4.Bh7+ Kh8 5.Bg6 Rff8 6.Nxf8 Rxf8
> +- (2.83) Depth: 8/25 00:00:07 2874kN
>1...h6 2.Bh7+ Kh8 3.Bg8 f5 4.Bf7 Nxc4 5.Qxf5 Qxg5 6.fxg5 Nxb2 7.gxh6 gxh6
> +- (4.82) Depth: 9/28 00:00:12 4993kN
>1...Re8
> +- (4.42) Depth: 9/28 00:00:12 5398kN
>1...Re8 2.Bxh7+ Kf8 3.Ne6+ Rxe6 4.dxe6 Bxc4 5.a3 Ba5 6.Qf5 Qe7
> +- (3.14) Depth: 9/28 00:00:17 7630kN
>1...Re8 2.Bxh7+ Kf8 3.Bg6 Nxc4 4.Bxe8 Qxe8 5.Ne6+ Kf7 6.Rg3 Qh8 7.Rxg7+ Qxg7
>8.Nxg7 Nxb2
> +- (3.47) Depth: 10/31 00:00:36 15816kN
>1...Re8 2.Bxh7+ Kf8 3.Qg6 Qd7 4.Bxf6 Bxc4 5.Rg3 Nxd5 6.Bxg7+ Ke7 7.Re3+ Kd8
>8.Rxe8+ Qxe8 9.Qxd6+ Kc8 10.Ne6
> +- (5.29) Depth: 11/31 00:01:30 39760kN
>1...g6
> +- (4.89) Depth: 11/31 00:03:07 85503kN
>1...g6 2.Bxg6 h6 3.Ne6 Qe7 4.Bh5 Kh8 5.Qg6 Nd7 6.Nxf8 Qxf8
> +- (4.81) Depth: 11/31 00:03:33 96980kN
>
>(Blass, Tel-aviv 24.09.2001)
>
>New position
>[D]r2q1rk1/p5pp/bn1p1p2/2pP4/1bP1NP2/3B1R2/PBQ3PP/R5K1 w - - 0 1
>
>Analysis by Crafty 18.10:
>
>1.Re3
> ² (0.56) Depth: 1/8 00:00:00
>1.Re3 Re8
> ² (0.28) Depth: 2/8 00:00:00
>1.Ng3 h6
> ² (0.42) Depth: 2/8 00:00:00
>1.Ng3 h6 2.Re3
> ² (0.70) Depth: 3/8 00:00:00
>1.Ng3 h6 2.a3 Ba5
> ² (0.54) Depth: 4/10 00:00:00
>1.Ng3 h6 2.a3 Ba5 3.Re3
> ± (0.82) Depth: 5/18 00:00:00
>1.Ng3 Kh8 2.a3 Ba5 3.Re3 Re8
> ² (0.59) Depth: 6/18 00:00:00 38kN
>1.Ng3 Kh8 2.a3 Ba5 3.Re3 Re8 4.Rxe8+ Qxe8 5.Rb1
> ± (0.71) Depth: 7/20 00:00:00 132kN
>1.Ng3 Kh8 2.a3 Ba5 3.Re3 Re8 4.Nf5 Rxe3 5.Nxe3
> ² (0.59) Depth: 8/26 00:00:01 410kN
>1.Rg3 Rb8 2.Nxf6+ Rxf6 3.Bxh7+ Kf8 4.Rxg7 Kxg7 5.Qg6+ Kf8 6.Bxf6
> ² (0.63) Depth: 8/26 00:00:04 1642kN
>1.Rg3 Rb8 2.Nf2 Kh8 3.Rh3 h6 4.a3 Ba5 5.Rb1
> ² (0.66) Depth: 9/29 00:00:07 2664kN
>1.Rb1 Rb8 2.Ng3 Kh8 3.a3 Ba5 4.Re3 Re8 5.Re6
> ² (0.69) Depth: 9/29 00:00:11 3872kN
>1.Nf2 Kh8 2.a3 Ba5 3.Rh3 h6 4.Re3 Re8 5.Rxe8+ Qxe8 6.Rb1
> ² (0.70) Depth: 9/29 00:00:15 5766kN
>1.Ng5
> ± (1.10) Depth: 9/29 00:00:19 7082kN
>1.Ng5 h5 2.Ne6 Qe7 3.Nxf8 Rxf8 4.Rh3 g6 5.Rb1
> +- (2.52) Depth: 9/29 00:00:26 10409kN
>1.Ng5 h5 2.Ne6 Qe7 3.Nxf8 Rxf8 4.Rh3 g6 5.Rb1
> +- (2.92) Depth: 10/31 00:00:39 15608kN
>1.Ng5 Re8 2.Ne6 Qe7 3.Rg3 Kh8 4.Rxg7 Qxg7 5.Nxg7 Kxg7 6.Rb1
> +- (3.21) Depth: 11/34 00:01:28 36849kN
>1.Ng5 Re8 2.Ne6 Qe7 3.Rg3 Kh8 4.Rxg7 Qxg7 5.Nxg7 Kxg7 6.Rb1
> +- (3.61) Depth: 12/34 00:03:15 80555kN
>
>(Blass, Tel-aviv 24.09.2001)
>
>Uri
I agree. Something is wrong as I can't reproduce that score in any form
here. I get Ng5 in 11 seconds on a quad 500 machine. And it sticks with it:
9 4.04 0.66 1. Rg3 Rb8 2. Nf2 Kh8 3. Rh3 h6 4.
a3 Ba5 5. Rb1
9 5.84 0.69 1. Ng3 Kh8 2. a3 Ba5 3. Re3 Re8 4.
Re6 Rb8 5. Rb1
9 11.02 0.73 1. Ng5 fxg5 2. Bxh7+ Kh8 3. Rh3 Rf6
4. Bf5+ Kg8 5. Be6+ Rf7 6. Qh7+ Kf8
7. Bxg7+ Rxg7 8. Qh8+ Rg8 9. Qxg8+
(4) 9-> 11.69 0.73 1. Ng5 fxg5 2. Bxh7+ Kh8 3. Rh3 Rf6
4. Bf5+ Kg8 5. Be6+ Rf7 6. Qh7+ Kf8
7. Bxg7+ Rxg7 8. Qh8+ Rg8 9. Qxg8+
10 14.21 ++ 1. Ng5!!
(3) 10 40.09 2.95 1. Ng5 Re8 2. Ne6 Qc8 3. Bxh7+ Kh8
4. Nxg7 Re7 5. Bf5 Qg8 6. Ne6
10-> 41.10 2.95 1. Ng5 Re8 2. Ne6 Qc8 3. Bxh7+ Kh8
4. Nxg7 Re7 5. Bf5 Qg8 6. Ne6
11 48.85 ++ 1. Ng5!!
11-> 1:19 3.34 1. Ng5 Re8 2. Ne6 Qc8 3. Bxh7+ Kh8
4. Nxg7 Re7 5. Bf5 Qg8 6. Ne6
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