Author: Dann Corbit
Date: 12:23:21 07/11/01
Go up one level in this thread
On July 11, 2001 at 12:52:30, Sune Larsson wrote:
>
> [D]r5nr/pp3kpp/2pb4/3pn1P1/8/2N1B2B/PPP2P1P/2KRR3 w - - 0 20
>
> IM Berg,Emanuel 2496 - GM Akesson,Ralf 2481
>
>
> This is a position from today's 10th round in the SWE-ch. 19 year old
> Berg is a very gifted tactician. Here he chose 20.Nxd5!, got an advantage
> and won the game vs his more experienced opponent. It was from a e5-pushed
> Caro-Kann.
>
> Test: How long before your program finds and chooses 20.Nxd5!
>
> The whole game below.
>
>
>[Event "SM"]
>[Site "SWE"]
>[Date "2001.07.11"]
>[Round "10"]
>[White "Berg, Emanuel"]
>[Black "Akesson, Ralf"]
>[Result "1-0"]
>[ECO "B12"]
>[WhiteElo "2496"]
>[BlackElo "2481"]
>[PlyCount "61"]
>[EventDate "2001.07.11"]
>
>1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 f6 7. Nf4 Bf7 8. Qe2
>fxe5 9. Qxe5 Nd7 10. Qe2 Qf6 11. g5 Qxd4 12. Nxe6 Bxe6 13. Qxe6+ Be7 14. Bh3
>Qe5+ 15. Be3 Qxe6 16. Bxe6 Bd6 17. O-O-O Ke7 18. Bh3 Ne5 19. Rhe1 Kf7 20. Nxd5
>cxd5 21. Rxd5 Rd8 22. Bc5 Nc4 23. Rd4 b6 24. Be6+ Kg6 25. Bxc4 bxc5 26. Re6+
>Kxg5 27. Rdxd6 Nf6 28. Rc6 Rd7 29. Rxc5+ Kh4 30. Re3 Ng4 31. Re4 1-0
Crafty also does not find it after 999 seconds:
EPD Kit revision date: 1996.04.21
unable to open book file [e:\crafty\release/books.bin].
hash table memory = 192M bytes.
pawn hash table memory = 80M bytes.
EGTB cache memory = 32M bytes.
draw score set to 0.00 pawns.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
threshold set to 9 pawns.
5 piece tablebase files found
19045kb of RAM used for TB indices and decompression tables
Crafty v18.10
White(1): st 999
search time set to 999.00.
White(1): epdpfga rough.epd rough.out
PFGA: EPD record: 1 ID: CCC Sune Larsson, 7/11/2001 @12:52:30
middle-game phase
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
nss depth time score variation (1)
6 0.22 0.39 1. Re2 Nc4 2. Bg4 h5 3. gxh6 Nxe3 4.
Rxe3 Nxh6
6-> 0.56 0.39 1. Re2 Nc4 2. Bg4 h5 3. gxh6 Nxe3 4.
Rxe3 Nxh6
7 0.73 0.14 1. Re2 Nc4 2. Bd4 Bf4+ 3. Kb1 Bxg5
4. Be6+ Kg6 5. Rg1
7 1.02 0.36 1. Bg2 Ne7 2. Ne4 dxe4 3. Rxd6 Nf5
4. Rd2 Nxe3 5. Rxe3
7 1.26 0.41 1. Ne4 Be7 2. Nd2 h6 3. gxh6 Nxh6 4.
Kb1 Nhg4
7-> 1.88 0.41 1. Ne4 Be7 2. Nd2 h6 3. gxh6 Nxh6 4.
Kb1 Nhg4
8 2.35 0.23 1. Ne4 Bb4 2. Nd2 h6 3. gxh6 Nxh6 4.
Bf4 Nhg4 5. Bg2
8 5.43 0.31 1. Bc5 Bxc5 2. Rxe5 Bd6 3. Rf5+ Kg6
4. Re1 Bxh2 5. Re6+ Kh5
8-> 5.57 0.31 1. Bc5 Bxc5 2. Rxe5 Bd6 3. Rf5+ Kg6
4. Re1 Bxh2 5. Re6+ Kh5
9 5.95 0.08 1. Bc5 Bxc5 2. Rxe5 Re8 3. Rxe8 Kxe8
4. Re1+ Ne7 5. f4 Rf8 6. Ne2
9 8.15 0.23 1. Bg2 Ne7 2. Ne4 Bb4 3. Nd2 Nc4 4.
c3 Nxe3 5. Rxe3 Bd6
9 9.25 0.28 1. Ne4 Bb4 2. Nd2 h6 3. f4 hxg5 4.
fxe5 Rxh3 5. Rf1+ Kg6
9-> 14.84 0.28 1. Ne4 Bb4 2. Nd2 h6 3. f4 hxg5 4.
fxe5 Rxh3 5. Rf1+ Kg6
10 16.45 0.43 1. Ne4 Bb4 2. Nd2 h6 3. f4 hxg5 4.
fxe5 Rxh3 5. e6+ Kg6 6. c3
10-> 30.27 0.43 1. Ne4 Bb4 2. Nd2 h6 3. f4 hxg5 4.
fxe5 Rxh3 5. e6+ Kg6 6. c3
11 34.91 0.27 1. Ne4 Bb4 2. Nd2 h6 3. gxh6 Nxh6 4.
f4 Neg4 5. c3 Rhe8 6. Bd4 Rxe1 7. Rxe1
11-> 1:30 0.27 1. Ne4 Bb4 2. Nd2 h6 3. gxh6 Nxh6 4.
f4 Neg4 5. c3 Rhe8 6. Bd4 Rxe1 7. Rxe1
12 1:46 0.22 1. Ne4 Bb4 2. Nd2 h6 3. gxh6 Nxh6 4.
f4 Neg4 5. c3 Bd6 6. Nc4 Bc7 7. Bxg4
Nxg4
12-> 4:07 0.22 1. Ne4 Bb4 2. Nd2 h6 3. gxh6 Nxh6 4.
f4 Neg4 5. c3 Bd6 6. Nc4 Bc7 7. Bxg4
Nxg4
13 4:46 0.21 1. Ne4 Bb4 2. Nd2 h6 3. f4 Bxd2+ 4.
Bxd2 hxg5 5. fxe5 Rxh3 6. Bxg5 Ke6
7. Re2 Rf3 8. b4
13-> 11:52 0.21 1. Ne4 Bb4 2. Nd2 h6 3. f4 Bxd2+ 4.
Bxd2 hxg5 5. fxe5 Rxh3 6. Bxg5 Ke6
7. Re2 Rf3 8. b4
14 14:15 0.22 1. Ne4 Bb4 2. Nd2 h6 3. f4 hxg5 4.
fxe5 Rxh3 5. Bxg5 Rxh2 6. e6+ Kf8 7.
Rf1+ Nf6 8. Nb3 Be7
time=16:39 cpu=99% mat=0 n=595259309 fh=94% nps=595k
ext-> chk=29511247 cap=1195812 pp=127192 1rep=998299 mate=20776
predicted=0 nodes=595259309 evals=115769865
endgame tablebase-> probes done=0 successful=0
White(1):
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