Author: Robert Hyatt
Date: 18:30:16 02/03/98
Go up one level in this thread
On February 03, 1998 at 15:52:30, Amir Ban wrote: > >Yet another chapter in the ECM saga: > > >No. 411 (Qxd6): > >I get the simple gxh7. Trying Qxd6, it gets about the same score (+3.5). >The position is already very unbalanced anyway, so there may be more. > >Recommend: Scrap it, or add gxh7. > I get Qxd6, +4.5... I have not tried gxh7 yet... > >No. 422 (f4): > >I find Qh4 (+92). f4 gets about the same, but I can't find a convincing >continuation after f4 exf4 e5 (or Rb6). > >Recommend: Vague. Drop it. > I get the same move/score, starting at 5 plies, .02 seconds... > >No. 425 (Ng4+): > >The Ng4+ idea works, but I prefer the intermediate Bf5 Qg2 Ng4+. > >Recommend: Add Bf5. didn't get anything here in 20 seconds... move choice was Bg4, -.39, 8 plies... 8.53 seconds... > > >No. 427 (Ne2+): > >Perhaps I have the position wrong. Black is already a queen down and it >looks hopeless. I find Rxg4 for the exciting score of -1209. > >Recommend: Find what the right position is. I get this instantly, by 5 plies this is +1.57... and never gets worse... only better... I'm using the suite from onenet.net... 6k1/p4p1p/3pqp2/2p1r3/2Pnr1N1/P6P/1P1Q1PP1/3R1RK1 b that's the FEN for the position I ran... > > >No. 434 (Ncxd6): > >This is fairly difficult. Nbxd6 is a transposition. > >Recommend: Add Nbxd6. didn't get this one in 20 secs... liked Nd4, +.5 > > >No. 440 (Rf3): > >It looks wrong: Rf3 Bd1 and black has egg on his face. > >Recommend: Drop it. I get Ne2 +1.9 from 3 plies thru 8... > > >No. 462 (Nxg6+): > >Wrong position again. I get Qxh7 mate. Mate-in-one problems are rather >easy, for me at least. I get Ng6 at 5 plies, .37 seconds, eval=4.85. here is the fen for this one: 4r2k/p2Q3p/2p1r1p1/4NpR1/3P4/2P1PP1b/P4q1P/6RK w > >Recommend: Find what the right position is. > > >No. 464 (e5): > >I cannot find the justification for e5. If the idea is e5 dxe5 Ne6 then >counting material actually black gains by it. > >Recommend: Investigate. crafty likes f5 from ply=5 on... eval=.3 > > >No. 467 (Rf6): > >I don't see a winning line after Rf6 Qf8 or Ng5. Perhaps it's the best >move, but the assignment is "white wins" and I don't see it. > >Recommend: Investigate. > crafty chooses Rf6 from ply=5 on, but eval is -1.17... seems odd. > >No. 470 (Nc3+): > >I don't think this works: 1...Nc3+ 2.Nxc3 bxc3 3.b3 Ra8 4.Bd4 and if the >c-pawn falls, what is black's threat ? If now 4...Bc5 5.Qg3. > >Recommend: Investigate. > don't get this one in 20 secs... best for me is Qa6, -.02 > >No. 475 (Rh5): > >Probably correct, but I'm not sure. I followed 1.Rh5 Ne2+ 2.Kh1 Ng3+ >3.hxg3 Qxf1+ 4.Kh2 now I see that 4...f6 loses but perhaps 4...h6 5.Bxh6 >g6 holds. If it's correct, it should be extremely difficult. > >Recommend: Investigate. I get the move very quickly, but the eval is <0 (-.16 at 4, not much better for a while). > > >No. 482 (Bxb5+): > >I get h4. Different plan, similar result (+115). > >Recommend: Add h4. > I get h4, but it seems unconvincing to me (eval < 1.0... I get h4 from the first ply I report statistics for, which was depth=5, .3 seconds. seems too easy for my tastes, and can be solved positionally as well, yet this is supposedly a tactical position... > >No. 488 (Bh3): > >I think it's wrong: Bh3 Ne1 and black is worse than ever. > >Recommend: Drop it. > I don't get this one either... > >No. 489 (Ne4): > >It's wrong: 1...Ne4 2.Nxe4 Rg6 3.Rf1! and if 3...Qe8 4.Rf8+! teaches >black a lesson. > >Recommend: Drop it. > I don't get this one and have not studied it at any length either.. > >No. 497 (f5): > >After f5 exd4 I can't find anything to justify a piece (fxg6 hxg6 Bxg6 >Nf8). > >Recommend: Investigate. don't get it either... Crafty likes Be3, score near zero. > > >No. 500 (f3): > >Looks wrong: 1...f3 2.Nxf3 Qg3 3.Be3 and where is the continuation ? > >Recommend: Drop it. > don't get this one either.. > >Amir
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.