Author: Dann Corbit
Date: 15:29:29 11/19/01
Go up one level in this thread
On November 19, 2001 at 15:58:35, Martin Giepmans wrote:
>On November 19, 2001 at 14:43:38, Ernst Walet wrote:
>
>>This is a nice king safety position from the Rebel site showing (likely) Fritz7
>>indeed has more king safety knowledge.
>>Futhermore Fritz7 (noMMX) seems to be the latest development of fritz6, as
>>surgested by many indeed.
>>
>>Ernst.
>>
>>[D]2r1r1k1/pp1nbpp1/4pn1p/q3NN1P/P1pP1B2/2P5/1PQ2PP1/R3R1K1 w - - 0 1
>>
>>Analysis by Fritz 7:
>>
>>1.Nxd7 Nxd7
>> = (-0.16) Depth: 6/23 00:00:00 81kN
>>1.Nxd7 Nxd7
>> = (-0.22) Depth: 7/21 00:00:00 121kN
>>1.Nxd7 Nxd7 2.Rxe6 fxe6 3.Nxh6+ gxh6 4.Qg6+ Kh8 5.Qxh6+ Kg8 6.Qg6+ Kh8 7.Qh6+
>>Kg8 8.Qg6+
>> = (0.00) Depth: 8/20 00:00:01 309kN
>>1.Nxd7 Nxd7 2.Rxe6 fxe6 3.Nxh6+ gxh6 4.Qg6+ Kh8 5.Qxh6+ Kg8 6.Qg6+ Kh8 7.Qh6+
>>Kg8 8.Qg6+
>> = (0.00) Depth: 9/25 00:00:03 787kN
>>1.Nxd7 Nxd7 2.Rxe6 fxe6 3.Nxh6+ gxh6 4.Qg6+ Kh8 5.Qxh6+ Kg8 6.Qg6+ Kh8 7.Qh6+
>>Kg8 8.Qg6+
>> = (0.00) Depth: 10/25 00:00:06 1536kN
>>1.Nxd7 Nxd7 2.Rxe6 fxe6 3.Nxh6+ gxh6 4.Qg6+ Kh8 5.Qxh6+ Kg8 6.Qg6+ Kh8 7.Qh6+
>>Kg8 8.Qg6+
>> = (0.00) Depth: 11/25 00:00:15 4051kN
>>1.Nxd7 Nxd7 2.Rxe6 fxe6 3.Nxh6+ gxh6 4.Qg6+ Kh8 5.Qxh6+ Kg8 6.Qg6+ Kh8 7.Qh6+
>>Kg8 8.Qg6+
>> = (0.00) Depth: 12/30 00:00:34 9217kN
>>1.Nxd7 Nxd7 2.Rxe6 fxe6 3.Nxh6+ gxh6 4.Qg6+ Kh8 5.Qxh6+ Kg8 6.Qg6+ Kh8 7.Qh6+
>>Kg8 8.Qg6+
>> = (0.00) Depth: 13/31 00:01:24 22844kN
>>1.Nxd7 Nxd7 2.Rxe6 fxe6 3.Nxh6+ gxh6 4.Qg6+ Kh8 5.Qxh6+ Kg8 6.Qg6+ Kh8 7.Qh6+
>>Kg8 8.Qg6+
>> = (0.00) Depth: 14/33 00:03:04 50519kN
>>1.Nxg7!
>> = (-0.03) Depth: 14/34 00:03:59 65315kN
>>1.Nxg7! Kxg7 2.Bxh6+ Kg8 3.Re3 Nxe5 4.dxe5 Nxh5 5.Qe4 Ng7 6.Bxg7 Kxg7 7.Rg3+ Kf8
>> = (0.00) Depth: 14/35 00:04:31 74123kN
>>1.Nxg7!
>> ² (0.29) Depth: 15/36 00:08:39 141614kN
>>1.Nxg7! Kxg7 2.Bxh6+ Kg8 3.Re3 Nxe5 4.dxe5 Nxh5 5.Qe4 f5 6.exf6 Bxf6 7.Qg6+ Kh8
>> ² (0.32) Depth: 15/40 00:10:10 166620kN
>>
>>(PIII-500E, 512MB hash, 3, 4 and 5 piece EGTB's 19.11.2001)
>>
>>
>>Analysis by Fritz 7 (No MMX):
>>
>>1.Nxe7+--
>> = (0.06) Depth: 1/5 00:00:00
>>1.Nxe7+--
>> = (0.06) Depth: 1/5 00:00:00
>>1.Nxe7+ Rxe7 2.Qe2 Nxe5 3.Bxe5
>> = (0.00) Depth: 2/13 00:00:00
>>1.Nxe7+ Rxe7 2.Qe2 Nxe5 3.Bxe5
>> = (0.00) Depth: 3/13 00:00:00 1kN
>>1.Nxe7+ Rxe7 2.Qe2 Nxe5 3.Bxe5 Nd5
>> = (-0.06) Depth: 4/12 00:00:00 2kN
>>1.Nxe7+ Rxe7 2.Qe2 Nd5 3.Qg4 Nxf4 4.Qxf4 Nxe5 5.Qxe5
>> = (-0.09) Depth: 5/17 00:00:00 20kN
>>1.Nxd7!
>> = (-0.06) Depth: 5/18 00:00:00 27kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Bd6 Ree8 4.Qe2 Qg5
>> = (-0.09) Depth: 6/18 00:00:00 40kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Rd8 4.Qxc4 Qxh5 5.Rad1
>> = (-0.06) Depth: 7/21 00:00:00 121kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Ree8 4.Qf3 Qb6 5.Re2 Rcd8
>> = (-0.09) Depth: 8/21 00:00:00 249kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Rc6 4.Be5 f6 5.Bf4 e5
>> = (-0.03) Depth: 9/24 00:00:02 771kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Rc6 4.Be5 f6 5.Bf4 e5
>> = (-0.06) Depth: 10/27 00:00:04 1665kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Ree8 4.Qf3 b6 5.Bd6 Rcd8
>> = (-0.06) Depth: 11/29 00:00:11 4820kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Be5 Rd8 4.b4 cxb3 5.Qxb3 Nxe5
>> = (-0.09) Depth: 12/29 00:00:26 10942kN
>>1.Nxe7+!
>> = (-0.06) Depth: 12/30 00:00:27 11335kN
>>1.Nxe7+ Rxe7 2.Qe2 Nd5 3.Qf3 N7b6 4.Qg3 Nxf4 5.Qxf4 Nxa4
>> = (-0.22) Depth: 13/34 00:01:34 38813kN
>>1.Nxd7!
>> = (-0.19) Depth: 13/34 00:01:36 39848kN
>>1.Nxd7! Nxd7 2.Nxe7+ Rxe7 3.Be5 Rd8 4.b4 cxb3 5.Qxb3 Nxe5
>> = (-0.09) Depth: 13/37 00:01:58 49146kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Be5 Rd8 4.b4 cxb3 5.Qxb3 Nxe5
>> = (-0.09) Depth: 14/33 00:03:07 78858kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Qd5 4.Bh2 Rce8 5.Rad1 e5
>> = (-0.12) Depth: 15/37 00:07:44 197970kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Qd5 4.Be5 Nxe5 5.Qxe5 Qd8
>> = (-0.09) Depth: 16/41 00:18:32 476242kN
>>1.Nxg7!
>> = (-0.06) Depth: 16/41 00:34:12 883395kN
>>1.Nxg7! Kxg7 2.Bxh6+ Kg8 3.Re3 Nxe5 4.dxe5 Nxh5 5.Qe4 Bf8
>> ² (0.66) Depth: 16/41 00:38:39 998394kN
>>
>>(PIII-500E, 512MB hash, 3, 4 and 5 piece EGTB's 19.11.2001)
>>
>>
>>Analysis by Fritz 6:
>>
>>1.Nxe7+--
>> = (0.03) Depth: 1/5 00:00:00
>>1.Nxe7+--
>> = (0.03) Depth: 1/5 00:00:00
>>1.Nxe7+ Rxe7 2.Qe2 Nxe5 3.Bxe5
>> = (-0.03) Depth: 2/13 00:00:00
>>1.Nxe7+ Rxe7 2.Qe2 Nxe5 3.Bxe5
>> = (-0.03) Depth: 3/13 00:00:00 1kN
>>1.Nxe7+ Rxe7 2.Qe2 Nxe5 3.Bxe5 Nd5
>> = (-0.09) Depth: 4/15 00:00:00 2kN
>>1.Nxe7+ Rxe7 2.Qe2 Nd5 3.Qg4 Nxf4 4.Qxf4 Nxe5 5.Qxe5
>> = (-0.09) Depth: 5/17 00:00:00 19kN
>>1.Nxe7+ Rxe7 2.Qe2 Nd5 3.Bh2 Nxe5 4.Bxe5 Rd7
>> = (-0.25) Depth: 6/17 00:00:00 48kN
>>1.Nxd7!
>> = (-0.22) Depth: 6/19 00:00:00 67kN
>>1.Nxd7! Nxd7 2.Nxe7+ Rxe7 3.Qe2 Qd5
>> = (-0.12) Depth: 6/19 00:00:00 74kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Rd8 4.Bd6 Ree8 5.Qxc4 Qxh5
>> = (-0.09) Depth: 7/21 00:00:00 133kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Ree8 4.Qf3 Qb6 5.Re2 Rcd8
>> = (-0.12) Depth: 8/23 00:00:00 268kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Rc6 4.Be5 f6 5.Bf4 e5
>> = (-0.06) Depth: 9/25 00:00:02 820kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Rc6 4.Be5 f6 5.Bf4 e5
>> = (-0.09) Depth: 10/25 00:00:04 1752kN
>>1.Nxe7+!
>> = (-0.06) Depth: 10/25 00:00:04 1891kN
>>1.Nxe7+ Rxe7 2.Qe2 Nd5 3.Bh2 N7b6 4.Bg3 Rec7 5.Nf3 Rd7
>> = (-0.19) Depth: 11/29 00:00:16 6158kN
>>1.Nxd7!
>> = (0.00) Depth: 11/29 00:00:16 6371kN
>>1.Nxd7! Nxd7 2.Nxe7+ Rxe7 3.Qe2 Rc6 4.Be5 f6 5.Bf4 e5
>> = (-0.06) Depth: 11/30 00:00:18 7084kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Rc6 4.Qf3 e5 5.dxe5 Nxe5
>> = (-0.06) Depth: 12/30 00:00:28 11466kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Rc6 4.Qf3 Qf5 5.a5 Qb5
>> = (-0.09) Depth: 13/31 00:01:09 28928kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Qd5 4.a5 Rc6 5.Be5 Ra6
>> = (-0.03) Depth: 14/33 00:02:47 70379kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Qd5 4.Be5 Qc6 5.Qg4 Nxe5
>> = (-0.09) Depth: 15/37 00:06:35 169217kN
>>1.Nxd7 Nxd7 2.Nxe7+ Rxe7 3.Qe2 Qd5 4.Be5 Qc6 5.Qg4 Nxe5
>> = (-0.09) Depth: 16/37 00:19:00 485260kN
>>1.Nxg7!
>> = (-0.06) Depth: 16/40 00:38:48 999867kN
>>1.Nxg7! Kxg7 2.Bxh6+ Kg8 3.Re3 Nxe5 4.dxe5 Nxh5 5.Qe4 Bf8
>> ± (0.75) Depth: 16/42 00:42:57 1106271kN
>>
>>(PIII-500E, 512MB hash, 3, 4 and 5 piece EGTB's 19.11.2001)
>
>
>
>How good (or bad) is Nxh6 in this position?
>My program immediately goes for this move and is still
>with it after 30 minutes.
>The strange thing is that it never considers Nxg7 while
>the different Fritz-versions never consider Nxh6 ...
>
>SpiderChess (amd 1200, 208 Mb hash)
>
>05 00:00:00 - 0.44 F5xE7 E8xE7 C2-E2 D7xE5 F4xE5 F6-D5 E5-D6
> 00:00:00 + 0.23 F5xH6 G7xH6 E5xF7 A5xH5 F7xH6 G8-F8 A1-D1 F8-G7
> E1xE6
>06 00:00:01 + 0.11 F5xH6 G7xH6 E5xF7 A5xH5 F7xH6 G8-F8 E1xE6 H5-H4
> C2-F5 C8-C6
>07 00:00:03 + 0.23 F5xH6 G7xH6 E5xF7 A5xH5 F7xH6 G8-F8 E1xE6 H5-H4
> C2-F5 F8-G7 F4-G5
>08 00:00:16 + 0.53 F5xH6 G7xH6 E5xF7 A5xH5 F7xH6 G8-H8 E1xE6 D7-F8
> E6-E5 H5-G6 H6-F5 C8-C6
>09 00:00:40 + 0.41 F5xH6 G7xH6 E5xF7 A5xH5 F7xH6 G8-H8 E1xE6 D7-F8
> E6-E5 H5-G6 H6-F5 F6-G4 E5-E1
>10 00:02:16 + 0.13 F5xH6 G7xH6 E5xF7 A5xH5 F7xH6 G8-H8 E1-E3 F6-D5
> E3-H3 H5xH3 H6-F7 H8-G7 G2xH3 D5xF4
>11 00:07:17 + 0.18 F5xH6 G7xH6 E5xF7 A5xH5 F7xH6 G8-H8 E1-E3 F6-D5
> E3-H3 H5xH3 C2-G6 E8-F8 G2xH3 D5xF4 H6-F7 F8xF7
> G6xF7
>12 00:25:16 + 0.41 F5xH6 G7xH6 E5xF7 A5xH5 F7xH6 G8-G7 E1-E3 E8-H8
> E3-H3 H5-E8 A1-E1 C8-C6 H3-G3 G7-F8 G3-G6 C6-B6
> H6-G4
Out to 10 ply (2 minute search) Beowulf likes the same thing. For sure, it's
the wrong move.
ID =
FEN = 2r1r1k1/pp1nbpp1/4pn1p/q3NN1P/P1pP1B2/2P5/1PQ2PP1/R3R1K1 w - -
. . r . r . k .
p p . n b p p .
. . . . p n . p
q . . . N N . P
P . p P . B . .
. . P . . . . .
. P Q . . P P .
R . . . R . K .
Current Position = 0.77
Number of Possible Moves = 51
5 35 42 31035 f5g3 f6d5 f4e3 d7e5 d4e5
6 34 100 77327 f5g3 d7e5 e1e5 f6d5 a1e1 a5b6
7 15 241 195055 f5g3 d7e5 e1e5 f6d5 e5e4 e7f6 f4d6
7 17 293 236241 e5d7 f6d7 f5e7 e8e7 f4d6 e7e8 d6e5 d7e5 e1e5
7 27 632 516973 f5e3 d7e5 f4e5 f6h5 c2e2 h5f6 e3c4
8 6 871 719612 f5e3 d7e5 f4e5 f6h5 c2e2 h5f6 e5f6 e7f6 e3c4
8 12 1537 1266966 f5h6 g7h6 e5f7 a5h5 f7h6 g8f8 e1e6 c8d8 e6e5
h5h4 c2f5
9 5 2682 2237054 f5h6 g7h6 e5f7 a5h5 f7h6 g8f8 e1e6 e7d8 e6f6
d7f6 a1d1 h5e2 c2h7
10 4 7600 6364092 f5h6 g7h6 e5f7 a5h5 f7h6 g8g7 e1e6 e7f8 e6f6
g7f6
10 4 12002 10055234 f5h6 g7h6 e5f7 a5h5 f7h6 g8g7 e1e6 e7f8 e6f6
g7f6
Search Time : 120.0 Seconds
Total Nodes Searched : 10055234 (85.9% Qui)
Total Nodes Evaluated : 8641015
Cuts : Delta 13591 : SEE 2269648 : Mate 0
: Razor 992588 : Eval 10906
Extensions : Check 225038 : OneRep 6036 : CMThreat 659
: Pawn 2675 : Recap 33654 : RevCheck 1762
Hash Stores (Size) : 1132236 (1398091)
Hash Probes (Hits) : 4920608 (972666)
EGTB Probes (Hits) : 0 (0)
Move Ordering : 87.2%
Best Move = f5h6
--Answer: Nxg7 !! Incorrect !!
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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