Author: Roberto Waldteufel
Date: 06:16:13 06/02/98
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On June 02, 1998 at 03:23:51, Stuart Cracraft wrote: >Okay, nice game. But what are the improvements that you made >that preceeded the increase in strength. > >Enquiring minds want to know! The main improvements were the addition of TOOT (thinking on opponent's time) and also some enhancements to the evaluation function to take more notice of open/half open files near the king (a suggestion of Bob Hyatt's thank you Bob!). I also removed a bug that was pointed out to me by Mark Taylor, which I might not have spotted myself for some time, as it only occurred when an en passant capture occurred in the game. >On June 01, 1998 at 20:19:48, Roberto Waldteufel wrote: > >>I have been developing my chess program, Rabbit, for some time now, but >>recently I think it has increased very noticeably in strength. I am >>particularly grateful for some of the tips and advice I have received >>through CCC, and now here's something back from Rabbit. I have a Risc >>1MB stand-alone chess computer and an old copy of Fritz2 which I have >>been using as sparring partners for Rabbit. I think these programs are >>both much stronger, as Rabbit always lose (until now, anyway). The Risc >>1MB is supposed to be about 2200 ELO, so I'm not exactly giving Rabbit >>easy opposition. Here is its first success: >> >>Rabbit v Risc 1MB (15 secs/move each) >> >>1 e2 c5 >>2 Nf3 e6 >>3 Bd3?! I cringed when I saw Rabbit play this move, and did not >> expect Ed Schoeders program to take long to win >>3......... d5 >>4 exd5 exd5 >>5 c4 The usual idea after the offbeat Bd3 is c3, Bc2 and >>d4. >>5......... Nf6 >>6 O-O Be7 >>7 cxd5 Nxd5 >>8 Nc3 Nb4 >>9 Bc4 Nc6 Black seems to be doing very well! >>10 a3 Nd3 >>11 Nd5 O-O >>12 Nxe7+ Nxe7 >>13 Qb3 Nf4 >>14 d4 Ne6 >>15 dxc5 Nxc5 >>16 Qb4 Na6 >>17 Qe1 Re8 >>18 Ng5! Nd5 >>19 Bxd5! Rxe1 >>20 Rxe1 I thought it was the end, but Rabbit still >>reckons it's almost 3 pawns up! On closer >>inspection Black's king is in a bit of >>trouble. >>20...... h6 >>21 Bxf7+ Kf8 >>22 Re8+ Qxe8 >>23 Bxe8 Kxe8 >>24 Ne4 Bd7!? Giving up another pawn, but how else is Black to >> develop his pieces? >> >>25 Nd6+ Ke7 >>26 Nxb7 Rb8 >>27 Na5 Nc5 >>28 Be3 Ne6 >>29 Nc4 a6 >>30 Rd1 Ba4 >>31 Re1 Bb3 >>32 Ne5 And Blak's position is hopeless. This represents >>Rabbit's greatest victory so far. >> >>Hope you find the game entertaining maybe it should be named the "Rabbit >>Attack", a good description of the anti-positional nature of the >>absurd-looking 3. Bd3. >> >>Roberto
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