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Subject: Re: Who else sees Nc4

Author: Eelco de Groot

Date: 15:06:32 03/10/00

Go up one level in this thread


On March 09, 2000 at 01:44:30, Chessfun wrote:

>
>This Nc4 seems forcing....a lovely move !!
>
>[Event "Easter"]
>[Site "Scarb"]
>[Date "2000.03.08"]
>[Round "1"]
>[White "Shredder4"]
>[Black "CM6666"]
>[Result "0-1"]
>
>1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 c6 5. Qd2 h6 6. Bh4 g5
>7. Bg3 Nh5 8. Be2 Nxg3 9. hxg3 Bg7 10. Nf3 Be6 11. d5 Bg4
>12. Nd4 Bxe2 13. Nf5 Be5 14. Nxe2 Qb6 15. c3 Nd7 16. f4 Bf6
>17. O-O-O Nc5 18. Qe3 Nd7 19. Qf3 Rc8 20. Nxh6 gxf4
>21. gxf4 cxd5 22. Rxd5 e6 23. Rdh5 Rc5 24. R5h3 Rb5 25. b3
>Ra5 26. Kb1 Qa6 27. a4 Kf8 28. f5 Ne5 29. Qe3 Nc4 30. bxc4
>Qxc4 31. fxe6 Qxa4 32. Kc1 Qa1+ 33. Kd2 Ra2+ 34. Kd3 Qb2
>35. e7+ Ke8 36. Qf3 Qd2+ 37. Kc4 Ra4+ 38. Kb5 Qa2 39. Qxf6
>Qb3+ 0-1
>
>[D]5k1r/pp3p2/q2ppb1N/r3nP2/P3P3/1PP1Q2R/4N1P1/1K5R b - - 0 29
>
>Thanks

Rebel Century 1.2 goes one better on CM6666, Chessfun. After a very long search
it didn't sacrifice its knight but a whole rook! ECTool engine did not find
that, I wonder if Rebel 10 does. I hope it is a correct sacrifice... By the way,
thanks for playing some manual games with Rebel 10 in your Easter tournament, if
I didn't understand you wrong? That should mean no problems with AUTO232 for
Rebel.

Eelco


Thinking....

  +---+---+---+---+---+---+---+---+  COMETC~1.EPD - Pos   3
8 |   |   |   |   |   | *K|   | *R|
  +---+---+---+---+---+---+---+---+  00:00:00      00:00:00
7 | *p| *p|   |   |   | *p|   |   |
  +---+---+---+---+---+---+---+---+
6 | *Q|   |   | *p| *p| *B|   | N |  Time          infinite
  +---+---+---+---+---+---+---+---+  Hash          28 Mb
5 | *R|   |   |   | *N| p |   |   |  Engine        Rebel Century
  +---+---+---+---+---+---+---+---+  Personality   Rebel Century
4 | p |   |   |   | p |   |   |   |  anti-GM       Off
  +---+---+---+---+---+---+---+---+  Fast Eval.    On
3 |   | p | p |   | Q |   |   | R |  Fast Search   On
  +---+---+---+---+---+---+---+---+  Style         Normal
2 |   |   |   |   | N |   | p |   |  Strength      Strongest
  +---+---+---+---+---+---+---+---+  Search        Normal Search
1 |   | K |   |   |   |   |   | R |
  +---+---+---+---+---+---+---+---+
    a   b   c   d   e   f   g   h

5k1r/pp3p2/q2ppb1N/r3nP2/P3P3/1PP1Q2R/4N1P1/1K5R b - -

[Event "?"]
[Site " Black to move "]
[Date "2000.03.09"]
[Round "?"]
[White "Pos   3"]
[Black "COMETC~1.EPD"]
[Result "*"]
[WhiteElo "?"]
[BlackElo "?"]
[FEN "5k1r/pp3p2/q2ppb1N/r3nP2/P3P3/1PP1Q2R/4N1P1/1K5R b - - 0 1"]

1..*

00:00:00  1.00  -1.68   1..exf5 2.Nxf5
00:00:00  1.07  -1.27   1..Ke8
00:00:00  1.09  -1.18   1..d5
00:00:00  1.13  -1.10   1..Rc5
00:00:00  2.00  -1.09   1..Rc5 2.fxe6 fxe6
00:00:00  2.07  -1.09   1..b5
00:00:00  2.07  -0.95   1..b5 2.fxe6 bxa4
00:00:00  3.00  -1.73   1..b5 2.fxe6 fxe6 3.Nd4 bxa4 4.Nxe6+
                       Ke7  (0)

00:00:00  3.01  -1.38   1..Rc5 2.fxe6 fxe6 3.Qf4 Nd7 4.Nd4
00:00:00  3.07  -1.31   1..Qb6 2.Qxb6 axb6 3.Nd4
00:00:00  4.00  -1.36   1..Qb6 2.Qxb6 axb6 3.Nd4 Ke7
00:00:00  5.00  -2.01   1..Qb6 2.Qxb6 axb6 3.fxe6 b5 4.Rf1
                       Ke7 5.exf7 bxa4  (0)

00:00:00  5.01  -1.66   1..Rc5 2.fxe6 Qb6 3.Nd4 a6
00:00:00  5.02  -1.55   1..d5 2.fxe6 fxe6 3.exd5 exd5 4.Rf1
                       b5  (0)

00:00:01  5.04  -1.55   1..b5
00:00:01  5.04  -1.33   1..b5 2.fxe6 bxa4 3.Nf5 Rxh3 4.Qxh3
                       Qd3+ 5.Qxd3 Nxd3 6.Nxd6 axb3 7.exf7  (1)

00:00:01  6.00  -1.33   1..b5 2.fxe6 bxa4 3.Nf5 Rxh3 4.Qxh3
                       Qd3+ 5.Qxd3 Nxd3 6.Nxd6 axb3 7.exf7  (1)

00:00:04  7.00  -1.56   1..b5 2.fxe6 bxa4 3.Nf5 Rxh3 4.Rxh3
                       Ng4 5.e7+ Ke8 6.Qf3  (3)

00:00:11  7.19  -1.41   1..Nc4 2.bxc4 Rxa4 3.Kc2 Qxc4 4.fxe6
                       fxe6+ 5.Kd1 Qxe4+ 6.Rf3  (7)

00:00:18  8.00  -1.33   1..Nc4 2.bxc4 Rxa4 3.Kc2 Qxc4 4.fxe6
                       fxe6 5.Kd1 Qxe4 6.Qg3  (12)

00:00:48  9.00  -1.40   1..Nc4 2.bxc4 Qxc4 3.fxe6 Rxa4 4.e7+
                       Bxe7 5.Nc1  (25)

00:02:37 10.00  -1.34   1..Nc4 2.bxc4 Rxa4 3.Nc1 Ra3 4.Qf4
                       Ra1+ 5.Kc2 Qa3 6.fxe6  (74)

00:03:32 10.01  -1.34   1..b5
00:04:50 10.01  -0.80   1..b5 2.fxe6 bxa4 3.Nf5 Rxh3 4.Rxh3
                       fxe6 5.Qh6+ Kf7 6.Qh7+  (212)

00:08:52 11.00  -1.66   1..b5 2.fxe6 bxa4 3.Nf5 Rxh3 4.Qxh3
                       Qd3+ 5.Qxd3 Nxd3 6.e7+ Ke8 7.Rd1
                       Ne5 8.Rxd6  (369)

00:17:08 11.01  -0.99   1..Nc4 2.bxc4 Qxc4 3.Qd2 Qxe4+ 4.Qc2
                       Rxa4 5.Nxf7 Kxf7 6.fxe6 Kxe6 7.Nf4
                       Qxf4 8.Re1+  (532)

00:35:18 12.00  -0.96   1..Nc4 2.bxc4 Qxc4 3.Qd2 Qxe4+ 4.Qc2
                       Rxa4 5.Nd4 Qxc2+ 6.Nxc2 Rc4 7.fxe6  (1161)

01:03:27 12.10  -0.96   1..Rxa4
01:04:34 12.10  -0.90   1..Rxa4 2.bxa4 Nc4 3.Qf4 e5 4.Qf2
                       Nd2+ 5.Kc2 Bg5 6.a5 Qc4  (3807)

01:46:04 13.00  -0.51   1..Rxa4 2.bxa4 Nc4 3.Qf4 e5 4.Qf2
                       Nd2+ 5.Kb2 Qxa4 6.Nc1  (4013)

03:32:29 14.00  -0.47   1..Rxa4 2.bxa4 Nc4 3.Qf4 e5 4.Qf2
                       Nd2+ 5.Kb2 Qxa4 6.Nc1  (6658)


Positions                :   2.155.917.099
Nodes per second         :   4.294.814.343

Extensions (checks)      :     318.389.365 (0%)
Extensions (captures)    :      19.726.993 (0%)
Extensions (king safety) :      42.877.212 (0%)
Extensions (on depth)    :      15.713.289 (0%)
Extensions (remaining)   :       2.236.086 (0%)
Extensions (total)       :     398.942.944 (-18%)

Hash Table               : 30.905.511  34.694.122  (99%)
Average depth            : 19
Deepest depth            : 60

The Rebel engine for ECTool keeps to 29. ..Ne5-c4:

Rebel Engine for ECTool. (c) Ed Schröder

Engine version   :  REBEL 9/10
Hash table size  :  13 Mb
Analysis mode   :  Analyzing next move
Refresh interval : 1000 ms

Game begin

00:00  06.00  -1.16  b7-b5 f5xe6 b5xa4 Nh6-f5 Rh8xh3 Qe3xh3 f7xe6
00:01  07.00  -1.16  b7-b5 f5xe6 b5xa4 Nh6-f5 Rh8xh3 Qe3xh3 f7xe6
00:05  08.00  -1.16  b7-b5 f5xe6 b5xa4 Nh6-f5 Rh8xh3 Qe3xh3 f7xe6
00:10  09.00  -1.15  b7-b5 f5xe6 b5xa4 Nh6-f5 Rh8xh3 Rh1xh3 f7xe6
00:25  10.00  -1.41  b7-b5 f5xe6 b5xa4 Nh6-f5 Rh8xh3 Qe3xh3 f7xe6
02:06  10.13  -1.28  Ne5-c4 b3xc4 Ra5xa4 Kb1-c2 Qa6xc4 f5xe6 Qc4xe6
02:58  11.00  -1.28  Ne5-c4 b3xc4 Ra5xa4 Kb1-c2 Qa6xc4 f5xe6 Qc4xe6
03:26  11.01  -1.28  b7-b5
03:56  11.01  -0.91  b7-b5 f5xe6 b5xa4 Nh6-f5 Rh8xh3 Qe3xh3 f7xe6
10:06  12.00  -2.31  b7-b5 f5xe6 b5xa4 b3-b4 Ne5-c4 Qe3-f4 Nc4-a3+
14:36  12.01  -1.10  Ne5-c4 b3xc4 Qa6xc4 Kb1-c2 Ra5xa4+
20:52  13.00  -1.05  Ne5-c4 b3xc4 Qa6xc4 Kb1-c2 Ra5xa4 Ne2-c1 Qc4xe4+
(?:)39:47  14.00  -1.01  Ne5-c4 b3xc4 Qa6xc4 Kb1-c2 Ra5xa4 Ne2-c1 Qc4xe4+
(2:)08:35  15.00  -0.97  Ne5-c4 b3xc4 Qa6xc4 Kb1-c2 Ra5xa4 Ne2-c1 Qc4xe4+



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