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Subject: Fritz in Zugzwang...and funny tablebase handling?

Author: Aloisio Ponti Lopes

Date: 21:58:23 04/16/01


This is a game that was played just for fun (1 processor for 2 engines... :-(
don't have the money to buy my dual). Time is 2 min. + 12 sec/ move increment.
Moves were entered manually.

[Event "Top-Ten"]
[Site "Ponti Chess Club"]
[Date "2001.04.17"]
[Round "1"]
[White "Chess Tiger 14.0"]
[Black "Fritz 6"]
[Result "1-0"]
[Opening "B23 Sicilian: Closed"]

1.e4 c5 2.Nc3 g6 3.Nf3 Nc6 4.a3 Bg7 5.Rb1 e6 6.b4 b6 7.Bb2 d6 8.Bb5 Ne7 9.Nd5
O-O 10.Nf6+ Bxf6
11.Bxf6 Bb7 12.O-O cxb4 13.axb4 a6 14.Bd3 Nb8 15.Re1 Nd7 16.Bg5 Re8 17.Bh6 Qc7
18.Qe2 a5
19.Qe3 a4 20.Bb5 Bc6 21.Qc3 e5 22.Ng5 Rec8 23.Qf3 f6 24.Bc4+ d5 25.exd5 Bb7
26.Ba2 Qxc2
27.d6+ Qxa2 28.Qxb7 fxg5 29.dxe7 Qe6 30.Bxg5 Rcb8 31.Qe4 Re8 32.d4 a3 33.dxe5 a2
34.Ra1
Kg7 35.f4 h6 36.Bh4 Ra4 37.g3 Nc5 38.Bf6+ Kh7 39.Qc2 Qb3 40.Re2 Qxb4 41.Rxa2
Qd4+ 42.Rf2
Rc4 43.Qb2 Qd5 44.Rf1 Qc6 45.Rc1 Nd3 46.Rxc4 Qxc4 47.Qd2 Qc5+ 48.Kg2 Qd5+ 49.Kh3
Qe6+ 50.Kh4
Qf5 51.g4 Qe4 52.Kg3 Qd4 53.h3 Qg1+ 54.Qg2 Qd4 55.Qf1 Qe3+ 56.Qf3 Qd4 57.g5 Nc5
58.Kh2 hxg5
59.fxg5 b5 60.Qg4 Qxg4 61.hxg4 Ne6 62.Ra6 Nc7 63.Rd6 Kg8 64.e6 Kh7 65.Kg3 Kg8
66.Kf4

I can't believe it is Fritz in Zugzwang... oh, I see, it's Tiger with the white
pieces... ;-)

Nxe6+
67.Rxe6 Kf7 68.Rb6 b4 69.Rxb4 Ra8 70.Rb3 Re8 71.Rd3 Ke6 72.Rd8 Rxe7 73.Bxe7 Kxe7
74.Rd5
Ke6 75.Rd2 Ke7 76.Ke5 Kf7 77.Rd7+ Ke8

[D] 4k3/3R4/6p1/4K1P1/6P1/8/8/8 w - - 0 78

Very interesting, I could not see the reason why Tiger did not play Ke6 here.
The funniest thing is that Fritz 6 thinks that this is the strongest too.
Nalimov tablebases enabled for both of them (all 3-4-5 men from the WM-Paket 4
Cds Nalimov collection, installed to a separate partition of the hard disk).

78.Kf6 Kxd7 79.Kxg6 Ke6 80.Kh6 Ke5 81.g6 Ke6 82.g7
Kf7 83.Kh7 Kf6 84.g8Q Ke5 85.Qd8 Ke4 86.g5 Ke3 87.g6 Ke2 88.g7 Ke1 89.g8Q Ke2
90.Qg2+ Ke1
91.Qdd2# 1-0

Not the way a GM or a strong human player would mate Fritz...

A. Ponti



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