Author: Vincent Diepeveen
Date: 14:52:20 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 > >Martin Nxg7 wins bigtime for sure. Your score says 0.41 that ain't much. For Nxg7 i get scores that are expressed in full pawns rather than a few tenth of a pawn. Also search depth is very little. Just 12 ply, fritz needs 16 ply before it finds Nxg7. Diep needs like 11 for Nxg7 with a huge score, but well that's with loads of extensions turned on. Don't know depth without it but that'll be about 16 too then i guess :)
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