Author: John Merlino
Date: 17:41:57 02/18/02
Go up one level in this thread
On February 18, 2002 at 19:56:47, Bob Basham wrote: >In this position, Alekhine played ....Rd5, and black went on to win. > >This turns out to be a good test move, even for portable chess units. > >The Novag Amber finds 1....Rd5 in just about 40 sec. >The old Fidelity Mach III took 2 min, 15 sec. to find it at 5 ply... > >[D]3r2k1/2p2ppp/p1q5/8/1pP5/1P2b1PK/P1Q1N2P/5R2 b - - Chessmaster 8000 (default personality) finds Rd5 in less than one second, but gives it up in favor of Rd6 after six seconds. It then comes back to Rd5 after 2:04 (this on my PIII-733) Time Depth Score Positions Moves 0:00 1/4 -2.23 4993 1...Qh6+ 2. Kg2 Rd2 3. Qf5 Qc6+ 4. Kh3 f6 0:00 2/5 -2.26 24184 1...Rd5 2. g4 Rd2 3. Qf5 Qh6+ 4. Kg3 f6 0:01 2/6 -2.28 65045 1...Rd5 2. g4 Qh6+ 3. Kg3 Qd6+ 4. Kh3 Rd3 5. Ng3 Rd2 0:03 3/7 -2.33 199733 1...Rd5 2. g4 Rd2 3. Qf5 f6 4. Re1 Rxa2 5. Qc8+ Kf7 0:06 3/7 -2.80 449264 1...Rd6 2. Qf5 Rh6+ 3. Kg4 Qe8 4. Nf4 Rxh2 5. Nd5 h5+ 6. Kf3 Bd4 7. Qe4 0:11 3/8 -2.94 945280 1...Rd6 2. Qf5 Rh6+ 3. Kg4 Qe8 4. Nf4 Rxh2 5. Nd5 h5+ 6. Kf3 Bc5 7. Qe4 Qxe4+ 8. Kxe4 Re2+ 9. Kd3 0:22 4/9 -3.23 2062242 1...Rd6 2. Qf5 Rh6+ 3. Kg4 Qe8 4. Qd5 Rxh2 5. Kf3 c6 6. Qd3 Bc5 7. Re1 Qe6 1:06 5/10 -3.27 6941107 1...Rd6 2. Qf5 Rh6+ 3. Kg4 Qe8 4. Nf4 Rxh2 5. Nd5 h5+ 6. Kf3 Bc5 7. Qe4 Qd7 8. Ne3 Rxa2 9. Rd1 2:04 5/10 -3.74 12435429 1...Rd5 2. g4 f5 3. g5 g6 4. c5 Rxc5 5. Qd3 Bxg5 6. Rg1 4:20 6/11 -3.63 26297592 1...Rd5 2. g4 f5 3. g5 g6 4. c5 Rxc5 5. Qd3 Bxg5 6. Rg1 Rd5 jm
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