mclure%sri-unix@sri-unix.UUCP (11/03/84)
The Vote Tally
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The winner is: 20 ... f5
The Machine Moves
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Depth Move Time for search Nodes Machine's Estimate
8 ply exf5 13:00 hrs 4.7x10^7 +42% of a pawn
PXP
Humans Move # Votes
-- BR -- BQ BN BR -- BK 20 ... f5 9
** -- ** BB BB -- ** BP
BP ** -- BP -- ** BP **
** BP ** WP BP WP ** --
-- ** -- ** -- ** -- **
** WQ ** -- WB WN WN WP
WP WP -- ** -- WP WP **
** -- WR -- WR -- WK --
Prestige 8-ply
Editor's Comment
----------------
Once again the machine's evaluation after an 8-ply search has jumped
significantly. It should be very interesting to see if Black can carry
through on his King-side attack. I have my doubts. The White Queen
is situated so as to be helpful on the third rank after White's minor
pieces retreat due to Black's coming pawn advance.
The Game So Far
---------------
1. e4 (P-K4) c5 (P-QB4) 11. Be2 (B-K2) Nxe2 (NxB) 21 exf5 (PXP)
2. Nf3 (N-KB3) d6 (P-Q3) 12. Qxe2 (QxN) Be7 (B-K2)
3. Bb5+(B-N5ch) Nc6 (N-QB3) 13. Nc3 (N-QB3) O-O (O-O)
4. o-o (O-O) Bd7 (B-Q2) 14. Be3 (B-K3) Ne8 (N-K1)
5. c3 (P-QB3) Nf6 (N-KB3) 15. h3 (P-KR3) Bd7 (B-Q2)
6. Re1 (R-K1) a6 (P-QR3) 16. Qc4 (Q-B4) b5 (P-QN4)
7. Bf1 (B-KB1) e5 (P-K4) 17. Qb3 (Q-N3) Rb8 (R-N1)
8. d4 (P-Q4) cxd4 (PXP) 18. Ne2 (N-K2) Kh8 (K-R1)
9. cxd4 (PXP) Bg4 (B-N5) 19. Ng3 (N-N3) g6 (P-N3)
10. d5 (P-Q5) Nd4 (N-Q4) 20. Rac1(QR-B1) f5 (P-B4)
Commentary
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JPERRY@SRI-KL
I vote for 20...f5. This is the logical culmination of all our plans
and I do not see how White's Rac1 will come to anything because after
20...f5 White will be busy for quite a while countering Black's K-side
threats. AFter f5 we already have the threat of f4 winning a piece so
ef is virtually forced. I think Black has a strong positional advantage.
VANGELDER@SU-SCORE
I vote 20. ... f5.
If 21. exf5 gxf5 22. Nh5 Nf6 23. Nxf6 Bxf6 24. Qc2 Rc8 25. Qe2 Qe8
26. Rxc8 Bxc8 27. Rc1 Rg8 threatening f4 and Bxh3. Black is gaining the
initiative and has the 2 bishops and a mobile pawn center.
The main idea here is not to contest the c-file seriously, just fight a
delaying action when the White Q tries to invade.
If 21. Bd2 (avoiding the fork) f4 22. Nf1 g5 Black plans an immediate g4
opening the file. If White prevents with 23. Nh2 h4 and Black will get
in ... g4 hxg4 hxg4 followed by Bh4 and Qf6. One of the main ideas here
is that the knight stays on e8 guarding c7 and d6, making it hard for
White to come up with counterplay on the Q-side while Black slowly
builds the attack on the K-side.
REM@SU-AI
My vote: 20 ... f5
Reasoning: white's past move could soon turn into something forceful
on the queen side, so maybe we should now advance the pawn without
further preparation so we get our attack going first.
White probably must exchange pawns, else we advance one pawn forking
knight and bishop (unless one moved away in which case we chase the
other away too); in either case we scatter white's forces.
After we retake with pawn, we are threating to advance either pawn,
again scattering white's forces, so perhaps white must NOT exchange. I
wonder how the computer will resolve the dilemma (perhaps Bg5 forcing
an exchange of bishops, defending the e pawn with the rook, and
opening up 3rd rank so Q can help defend? Maybe the computer really is
winning now as it claims?).
Solicitation
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Your move, please?
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