Author: Mike S.
Date: 09:26:17 08/11/02
8m+3s P3/700_MHz Blitzmatch 2002
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1 Pharaon 2.61 0½110½01½½½1 6.5/12
2 Aristarch 4.4 1½001½10½½½0 5.5/12
(64 MB hash each, 4-piece tbs., no pondering)
http://members.surfeu.at/mscheidl/Aristarch-Pharaon.zip (PGN + CBF)
From the first game, where Black had the bishop pair and a passer against rook +
knight (the last move was 43...Bh2-c7?):
Aristarch 4.4 - Pharaon 2.61 [C80]
[D]8/2b5/R3b3/2pk1p2/1pNp2Pp/1P3P1P/4K3/8 w - - 0 44
44.g5 +1.63/9 1s - This pawn can't be stopped without loosing a bishop (and the
game).
I had read it before, but forgot: There's a big book available for download
separately, for Aristarch. So it played the match with the two small bookfiles
only, which are included in the main zip archive. But except the following
example from game no. 4, no severe opening problems were visible in the match:
Pharaon 2.61 - Aristarch 4.4 [B40]
1.e4 c5 2.Nf3 e6 3.Nc3 Nc6 4.d4 Nf6? first calculated move 5.d5 Na5 6.d6 a6 7.e5
Ng8 -1.11
[D]r1bqkbnr/1p1p1ppp/p2Pp3/n1p1P3/8/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 0 8
Another observation in the same game was the following underpromotion blunder.
Meanwhile I've been pointed to Aristarch's for_experts.txt, which mentiones that
it doesn't underpromote. Here, the problem is that the opponent underpromotes,
which A. couldn't expect:
[D]r3r3/4Pk1p/pppB2p1/2pp4/2P3n1/2R5/PP3PPP/4R1K1 b - - 0 24
24...Rad8?? 25.exd8N+, and there's no time for Rxe1#.
Here's a nice example of Aristarch's skills:
Aristarch 4.4 - Pharaon 2.61 [E04]
[D]r2bk1r1/1p3ppp/p1b1p3/Bp6/4P3/5BP1/PP3P1P/2RR2K1 w q - 0 19
19.Rxc6! Bxa5 [19...bxc6 20.e5 Bxa5 (20...Ke7?? 21.Bb4+ c5 22.Bxc5+ Ke8 23.Bc6
Mate!) 21.Bxc6+ returns exchange + pawn] 20.Rcd6, followed by Rd7 etc.
For collectors of chess curiosities, from the last game:
Pharaon 2.61 - Aristarch 4.4
[D]8/k7/8/1Q6/8/1K4q1/3PP3/8 w - - 0 73
Pawns d2+e2 still on their original squares after 72 (!!) moves.
Regards,
M.Scheidl
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