Author: Martin Giepmans
Date: 12:58:35 11/19/01
Go up one level in this thread
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
Martin
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