Computer Chess Club Archives




Subject: Multi-Fritz with Boss versus IM R. Vasquez

Author: Ingo Althofer

Date: 16:00:34 03/09/99

In Santiago a match on four games is played between IM Rodrigo Vasquez (Elo
2433, number two in Chile, after IGM Morovic) and a man-machine-combination
consisting of Fritz 5 (16 bit version) and this reporter. In this combination
Fritz is run in some k-best mode (typically k = 2 or 3 ), and the human (=me)
has the choice amongst the proposals of Fritz (so a bit more general than
"Double-Fritz with Boss").

In the match time conditions are "whole game in 120 minutes per player".
IM Vasquez is paid according to his performance. For each win he gets 5x Pesos,
for each draw 3x Pesos, for each loss x Pesos (x being a comfortable positive
number). The first two rounds have been played yet, and things seem to become a
desaster for my man-machine team: game 1 was a lucky draw, and in game 2 the IM
beat me convicingly.

Game 1  White: Multi-Fritz with Boss Ingo Althofer
        Black: IM Rodrigo Vasquez

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6 6.Bb5 Bd6 7.dxc5 Bxc5 8.0-0 Nge7
and now comes the blunder of the year. I used Fritz's Powerbook, and here there
was a seldom alternative, played only twice, but by 2600 players. Both these
games ended in draws, so I believed in the potential ofthe following move. Nb3
would have been the natural choice (with equal chances).

9.Re1?? (from Fritz powerbook)

Bxf2+ (Rodrigo Vasquez: "Ingo, didnt you see this trivial combination?" Ingo:
"No, I believed in Fritz.")

10.Kxf2 Qb6+ 11.Nd4 Qxd4+ 12.Kf1 Qc5 13.Bd3 0-0 14.Nb3 Qd6 15.Qh5 g6 16.Qh4 Nf5
17.Bf4 Qd8 Here Fritz thought to have equalized again, despite the minus pawn.

18.Qxd8 Rxd8 19.Bc7 Rf8 20.c3 Be6 Maybe Ng7 is better.

21.Rad1 Rac8 22.Bf4 Rcd8 23.Kg1 Nd6 24.Nc5 Bc8 25.Bc2 Nc4 26.Bh6 Rfe8 27.Bg5
Rxe1+ 28.Rxe1 Rf8 29.Bh6 Rd8 30.Bg5 Rf8

declared drawn because of move repetition. I had still hoped that Rodrigo would
try for a win ... But he was too clever for such type of chess-suicid.

Times:  White 53 minutes  Vasquez 55 minutes.

Rodrigos nice win of round two to be presented tomorrow.

Ingo Althofer.

PS: (i) Fernando Villegas is out of house. I am keeping the gate and cannot
   accept any reservations, even not for 2031 or later.
    (ii) Santiago is such a nice place that I forgot my promise (from end of
     1997) never again to play computer-assisted chess. What a pity.

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