Author: Dann Corbit
Date: 13:33:54 01/16/02
Go up one level in this thread
On January 16, 2002 at 11:17:11, Matthew Barnett wrote:
>[D]r6r/1b1n1pk1/p3p1pR/1p1pP1P1/2q2P2/P1N2B2/1PP4Q/2KR4 w - - 0 24
>
>Here, in a correspondence game, I played Nxd5 and went on to win. I'm trying to
>work out how good it is against the other more obvious move, Rh1. Personally, I
>think it is at least as good as Rh1, if not better (that's why I played it at
>the time!) although the dividends aren't really seen until the endgame.
>
>When it comes to using Deep Fritz (Athlon 1900+ 128MB RAM), it doesn't see the
>possibility for a long, long time. If I make it analyse the position from Nxd5,
>it likes it much more quickly and by quite a bit after about 18 ply.
>
>Does anyone's engine see Nxd5 reasonably quickly and what do they think of it
>when Nxd5 is played?
Using Pepito to study f5 and then Nxd5, it seems that f5 is a simple
transposition of the Rh1 idea, and (looking at Dieter's analysis) your move is
shown to be excellent as Dieter's analysis is a transposition of the Nxd5 idea.
The Nxd5 idea slowly gains appeal to Pepito, and it sees a problem for white by
ply 12. I think for sure Nxd5 (or a transposition of it) is the best move. But
someone like Come, Uri or Vincent will probably tell me why I am totally wrong
soon. ;-)
HASH_SIZE: 4194304 entries / 64.00 MB
PAWN_HASH_SIZE: 131072 entries / 1.50 MB
ECACHE_SIZE: 32768 entries / 0.50 MB
EGTB_PATH: e:\programme\winboard\nalimov
RMARGIN: -1000
USE_BOOK: yes
PRI_BOOK: Not found
SEC_BOOK: Not found
PRI_BOOK_FILE:
SEC_BOOK_FILE:
BOOK_RANDOM: yes
HASH_STORE_DEPTH: 1
Type "help" for a list of available commands.
Pepito> post
Pepito> epd
Introduzca fichero a cargar:
> \alt.epd
Tiempo por problema (segs) ? 300
CONTROL_IN 20000
+----+----+----+----+----+----+----+----+
8 | *R | | | | | | | *R |
+----+----+----+----+----+----+----+----+
7 | | *B | | *N | | *P | *K | |
+----+----+----+----+----+----+----+----+
6 | *P | | | | *P | | *P | R |
+----+----+----+----+----+----+----+----+
5 | | *P | | *P | P | P | P | |
+----+----+----+----+----+----+----+----+
4 | | | *Q | | | | | |
+----+----+----+----+----+----+----+----+
3 | P | | N | | | B | | |
+----+----+----+----+----+----+----+----+
2 | | P | P | | | | | Q |
+----+----+----+----+----+----+----+----+
1 | | | K | R | | | | |
+----+----+----+----+----+----+----+----+
a b c d e f g h
5 54 33 32712 g6xf5 Qh2-g3 Qc4-c7 Rh6xh8 Ra8xh8 Rd1-e1
5 54 35 36827 g6xf5 Qh2-g3 Qc4-c7 Rh6xh8 Ra8xh8 Rd1-e1
6 21 43 61344 g6xf5 ?? Qh2-g3 Qc4-c7 Rh6xh8 Ra8xh8 Rd1-e1
6 22 47 73429 g6xf5 !!
6 38 65 126535 g6xf5 Rd1-h1 Rh8-g8 Qh2-g3 Kg7-f8 Rh6-h7
6 38 65 126582 g6xf5 Rd1-h1 Rh8-g8 Qh2-g3 Kg7-f8 Rh6-h7
7 28 89 192665 g6xf5 Rd1-h1 Rh8-g8 g6 Kg7-f8 g6xf7 Kf8xf7
7 28 99 226035 g6xf5 Rd1-h1 Rh8-g8 g6 Kg7-f8 g6xf7 Kf8xf7
8 -5 160 428267 g6xf5 ?? Rd1-h1 Rh8-g8 g6 Kg7-f8 g6xf7 Kf8xf7
8 -37 260 710362 g6xf5 Rd1-h1 Rh8-g8 Rh6xe6 f7xe6 Qh2-h6 Kg7-f7 Bf3-h5
Kf7-e7 Qh6-h7 Rg8-g7 Qh7xg7 Ke7-d8
8 -37 317 907240 g6xf5 Rd1-h1 Rh8-g8 Rh6xe6 f7xe6 Qh2-h6 Kg7-f7 Bf3-h5
Kf7-e7 Qh6-h7 Rg8-g7 Qh7xg7 Ke7-d8
9 -43 432 1249253 g6xf5 Rd1-h1 Rh8-g8 Rh6xe6 f7xe6 Qh2-h6 Kg7-f7 Bf3-h5
Kf7-e7 Qh6-h7 Rg8-g7 Qh7xg7 Ke7-d8 Qg7-g8 Kd8-e7
9 -43 537 1595462 g6xf5 Rd1-h1 Rh8-g8 Rh6xe6 f7xe6 Qh2-h6 Kg7-f7 Bf3-h5
Kf7-e7 Qh6-h7 Rg8-g7 Qh7xg7 Ke7-d8 Qg7-g8 Kd8-e7
10 -76 1586 5023704 g6xf5 ?? Rd1-h1 Rh8-g8 Rh6xe6 f7xe6 Qh2-h6 Kg7-f7
Bf3-h5 Kf7-e7 Qh6-h7 Rg8-g7 Qh7xg7 Ke7-d8 Qg7-g8 Kd8-e7
10 -135 1885 5902284 g6xf5 Rd1-h1 Rh8-g8 Rh6xe6 Kg7-f8 Re6-d6 Ra8-d8 Nc3xd5
Rg8xg5 Qh2-d2
10 -135 3392 10949922 g6xf5 Rd1-h1 Rh8-g8 Rh6xe6 Kg7-f8 Re6-d6 Ra8-d8 Nc3xd5
Rg8xg5 Qh2-d2
11 -168 6732 21978477 g6xf5 ?? Rd1-h1 Rh8-g8 Rh6xe6 Kg7-f8 Re6-d6 Ra8-d8
Nc3xd5 Rg8xg5 Qh2-d2
11 -204 7378 23893127 g6xf5 Rd1-h1 Rh8-g8 Rh6-h7 Kg7-f8 Bf3-h5 Kf8-e7 Bh5xf7
Rg8-h8 Rh7xh8 Ra8xh8 Qh2xh8 Qc4-f4 Kc1-b1 Ke7xf7
11 -204 12355 40062379 g6xf5 Rd1-h1 Rh8-g8 Rh6-h7 Kg7-f8 Bf3-h5 Kf8-e7 Bh5xf7
Rg8-h8 Rh7xh8 Ra8xh8 Qh2xh8 Qc4-f4 Kc1-b1 Ke7xf7
12 -204 16276 51662494 g6xf5 Rd1-h1 Rh8-g8 Rh6-h7 Kg7-f8 Bf3-h5 Kf8-e7 Bh5xf7
Rg8-h8 Rh7xh8 Ra8xh8 Qh2xh8 Qc4-f4 Kc1-b1 Ke7xf7
12 -204 28168 89449436 g6xf5 Rd1-h1 Rh8-g8 Rh6-h7 Kg7-f8 Bf3-h5 Kf8-e7 Bh5xf7
Rg8-h8 Rh7xh8 Ra8xh8 Qh2xh8 Qc4-f4 Kc1-b1 Ke7xf7
Time spent: 300.03
Depth reached: 12.958
Nodes per second: 317101.74024779
Interior nodes: 27946144
Quiescent nodes: 67193889
First_success: 7662386/8606543 (89.030 %).
BranchingFactor: 67.273
Null-moves: 11459856/15225756 (75.266 %).
Hash hits: 6301546/27946144 (22.549 %).
EGTB hits: 0/0 (0.000 %).
Pawn Hash hits: 66385893/67193889 (98.798 %).
Futility cut-offs: 53361760.
IID: 2.
Evals: 67193889. Lazy: 49871309. (74.220 %). Cached: 3276391. (18.914 %).
Extensions: CHK 8305900. MRL 37368. RCP 94258.
MaxPosB: 106, MaxPosN: 130
Voy por el problema 1. Resueltos: 0
+----+----+----+----+----+----+----+----+
8 | *R | | | | | | | *R |
+----+----+----+----+----+----+----+----+
7 | | *B | | *N | | *P | *K | |
+----+----+----+----+----+----+----+----+
6 | *P | | | | *P | | *P | R |
+----+----+----+----+----+----+----+----+
5 | | *P | | N | P | | P | |
+----+----+----+----+----+----+----+----+
4 | | | *Q | | | P | | |
+----+----+----+----+----+----+----+----+
3 | P | | | | | B | | |
+----+----+----+----+----+----+----+----+
2 | | P | P | | | | | Q |
+----+----+----+----+----+----+----+----+
1 | | | K | R | | | | |
+----+----+----+----+----+----+----+----+
a b c d e f g h
5 139 31 23842 e6xd5 Rd1-h1 Rh8-e8 Rh6-h7 Kg7-f8 Qh2-g3 a5
5 139 33 28931 e6xd5 Rd1-h1 Rh8-e8 Rh6-h7 Kg7-f8 Qh2-g3 a5
6 148 50 89985 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Rh8-e8 Rh6-h7 Kg7-f8 Qh2-g3
a5
6 148 53 98432 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Rh8-e8 Rh6-h7 Kg7-f8 Qh2-g3
a5
7 141 71 150342 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Rh8-e8 Rh6-h7 Kg7-f8 Qh2-g3
Ra8-c8 Qg3-e3
7 141 117 303037 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Rh8-e8 Rh6-h7 Kg7-f8 Qh2-g3
Ra8-c8 Qg3-e3
8 108 247 737833 Bb7xd5 ?? Bf3xd5 e6xd5 Rd1-h1 Rh8-e8 Rh6-h7 Kg7-f8
Qh2-g3 Ra8-c8 Qg3-e3
8 78 314 952422 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Rh8-d8 e6 f7xe6 Rh6xg6
Kg7-f7 Qh2-h7 Kf7-f8 Rg6xe6 Qc4xf4
8 78 402 1238079 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Rh8-d8 e6 f7xe6 Rh6xg6
Kg7-f7 Qh2-h7 Kf7-f8 Rg6xe6 Qc4xf4
9 46 487 1554793 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Qc4-c8 f5 Rh8-g8 Rh6-h7
Kg7-f8 e6 f7xe6 f5xe6
9 46 756 2501663 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Qc4-c8 f5 Rh8-g8 Rh6-h7
Kg7-f8 e6 f7xe6 f5xe6
10 13 2356 8085527 Bb7xd5 ?? Bf3xd5 e6xd5 Rd1-h1 Qc4-c8 f5 Rh8-g8 Rh6-h7
Kg7-f8 e6 f7xe6 f5xe6
10 13 2506 8581463 Bb7xd5 Bf3xd5 e6xd5 f5 g6xf5 e6 f7xe6 Qh2-d6 Rh8xh6
Qd6xd7 Kg7-h8 g5xh6
10 13 2507 8581510 Bb7xd5 Bf3xd5 e6xd5 f5 g6xf5 e6 f7xe6 Qh2-d6 Rh8xh6
Qd6xd7 Kg7-h8 g5xh6
11 46 3232 11150562 Bb7xd5 !!
11 51 3848 13567283 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Qc4-c8 Kc1-b1 Qc8-d8 f5
Rh8-g8 Rh6-h7 Kg7-f8 e6 f7xe6 f5xe6
11 51 5303 18457126 Bb7xd5 Bf3xd5 e6xd5 Rd1-h1 Qc4-c8 Kc1-b1 Qc8-d8 f5
Rh8-g8 Rh6-h7 Kg7-f8 e6 f7xe6 f5xe6
12 18 11415 39343059 Bb7xd5 ?? Bf3xd5 e6xd5 Rd1-h1 Qc4-c8 Kc1-b1 Qc8-d8 f5
Rh8-g8 Rh6-h7 Kg7-f8 e6 f7xe6 f5xe6
12 -82 19652 66906067 Bb7xd5 ?? Bf3xd5 e6xd5 Rd1-h1 Qc4-c8 Kc1-b1 Qc8-d8 f5
Rh8-g8 Rh6-h7 Kg7-f8 e6 f7xe6 f5xe6
Time spent: 300.02
Depth reached: 11.979
Nodes per second: 343510.44364899
Interior nodes: 33366572
Quiescent nodes: 69693429
First_success: 8687204/9761632 (88.993 %).
BranchingFactor: 2.500
Null-moves: 13634826/17467330 (78.059 %).
Hash hits: 8174251/33366572 (24.498 %).
EGTB hits: 0/0 (0.000 %).
Pawn Hash hits: 68668533/69693429 (98.529 %).
Futility cut-offs: 59713098.
IID: 6.
Evals: 69693429. Lazy: 53288261. (76.461 %). Cached: 3390898. (20.670 %).
Extensions: CHK 10159904. MRL 46867. RCP 196334.
MaxPosB: 120, MaxPosN: 126
Voy por el problema 2. Resueltos: 0
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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