Author: Ernst A. Heinz
Date: 05:37:52 01/19/98
Go up one level in this thread
On January 18, 1998 at 16:41:30, Amir Ban wrote: >No. 11 (Nxg4): > >Junior immediately grabs Bb5 and sticks with it. I analyzed Nxg4 and >there is certainly some point to it. These are two completely different >plans, and although Bb5 seems better, I'm not sure. > >Recommend: Add Bb5 as a side solution. "DarkThought" also prefers Bb5 from the beginning (score = +1.87). If Nxg4 is not really crushing (at what depth?), I agree on Bb5. >No. 14 (Nd5): > >Junior finds Nb5 immediately. In the deeper analysis, it ultimately >prefers Nd5 slightly. Both moves have the same tactical idea. > >Recommend: No change (but would like to hear other opinions). "DarkThought" scores all three moves Nb5, Nd5, and Rad1 as roughly +0.5 but finally prefers Nd5, too (just slightly). >No. 17 (Rxd5): > >Junior finds Nf6+. After a long think, it prefers Rxd5 slightly. > >Recommend: No change, or add Nf6+ as side solution. The point of Rxd5 seems to be the king chase, IMHO. After Nf6+ the black king might still be able to escape (e.g. by O-O-O). >No. 19 (Rxf6+): > >Rxf6+ simplifies nicely into a won endgame. However Junior never >considers it and find Nxe6 is really crushing. > >Recommend: Change key to Nxe6. "DarkThought" agrees. >No. 28 (Rxf4): > >A difficult problem, and somewhat vague. I am not close to finding it, >but by following the sequence Rxf4 Bxf4 Nxf6+ gxf6 Qg4+ Bg5 Bxg5 f5 it >looks like it does work in the sense that it's better than the >alternatives, but I cannot see a plus score. > >Recommend: No change, or else drop it for reason of vagueness. "DarkThought" prefers Qg4 (score = -0.43) at high depths -- I'd probably drop the position. >No. 29 (Rgxg6): > >A classical problem which is found easily. The idea is that after the >knight on g6 is gone, Qe5 wins. However, after a few seconds Junior >prefers an intermediate Rxa6 Qxa6 Rxg6 which is the same plan but more >effective. > >Recommend: Add Rxa6 as side solution. "DarkThought" agrees until iteration #13. Then it fails high on Rf4! with a score of +4.66 (kept until completion of iteration #15). >No. 43 (Bxg2+): > >Junior takes Qxc2 fast and sticks with it, thinking that white is forced >to give up the exchange with Rxg4. Looks like this works, and is >somewhat better than the key. > >Recommend: Add Qxc2 as side solution. "DarkThought" agrees. More later ... =Ernst=
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