Author: Bruce Moreland
Date: 09:45:49 01/27/98
Go up one level in this thread
On January 27, 1998 at 11:53:23, Amir Ban wrote: >No. 321 (Rd5): > >I play here Nd5 instead, but don't see a plus score. Black mustn't take >on d5, but after Rd5 Qc7 I don't see a continuation. > >Recommend: Discard. I ran this for an hour and have Nd5, +2. >No. 327 (Rxd7): > >I don't find this. I think it works but I'm not sure. The idea seems to >be Rxd7 Nxd7 Qh5. > >Recommend: No change (?). Rxd7 after a couple minutes but only +0.5. Prior to that the score had been slightly negative so maybe it sniffs something. >No. 330 (Rxf6): > >I find that the routine Re1 (+186) is more effective. > >Recommend: Change key to Re1. I ran this for an hour, had Re1 (+1.8) until ten minutes, then shifted to Ne2 (+2.1). The scores are misleading here, since white starts out up a pawn, right? >No. 336 (Rxd4): > >I find Bxe5! as a free gain of a pawn. I don't know what the point of >Rxd4 is. > >Recommend: Change key to Bxe5. Rxd4 is illegal. r1bqr1k1/pp3pp1/2p4p/3PN1n1/3P1b2/2NB4/PPQ2PPP/3R1RK1 b - - 0 1 I have Rxe5 (the key in my version of the file) at 21 seconds, +2. >No. 345 (Nxf6): > >I find a different knight sacrifice Nxf7. I can't follow all the >complications after both, but I consistently get better scores with Nxf7 >(+189). > >Recommend: Side solution Nxf7. It might transpose. I come back to Nxf6 at depth 9, but I didn't run this one for longer than 20 seconds. >No. 349 (Rxd5): > >Maybe someone can find out the purpose of Rxd5: 1.Rxd5 Bxf2+ 2.Kh1 exd5 >3.Qxf7+ Kh8 leads white nowhere ? > >Recommend: Discard. No solution after an hour. >No. 354 (Qxf3): > >This one's unclear. 1...Qxf3 2.Nxf3 Rxh3+ 3.Kg1 Rxf3 is a nice position >for black but I don't see a decisive line. This may be meant as a >positional sacrifice. It doesn't look inferior to any other possibility, >which may be a basis for accepting it. > >Recommend: Investigate. I have this as a draw score after 20 seconds, but didn't look further yet since I find the key move. >No. 366 (Rxd8): > >I think this one's wrong. 1.Rxd8 Qxd8 2.Qh4 Kg8 3.Rxf6 white gets two >minor pieces for a rook, but will be sorry he did after 3...Qb6 which >gives black a strong counterattack. > >Recommend: Discard. Found in 38 minutes with a score of +0.5. >No. 367 (Rd5): > >I have no clue here. A black rook is en prise and Junior just takes it >Bxf8 for a score of 266. Anything wrong with that ? Instead Rd5 places a >white rook en prise for no obvious purpose. > >Recommend: Discard. I have Bxf8 +2.3 for 23 seconds, then Ne2 +3.8 after than, then Nd5 +5 at 11 minutes. I didn't find Rd5. >No. 371 (Rxd5): > >I think this is based on faulty defense: 1.Rxd5 cxd5 2.c6 Bc8 3.Ba6 Ka8 >and black is not in trouble. > >Recommend: Discard. Didn't find it in an hour. >No. 377 (d6): > >Don't find what d6 does except lose a pawn. > >Recommend: Discard. I don't find this in an hour, but d6 is a clearance sacrifice apparently designed to put a knight on d5, maybe even after Rxe7. I might set this one up to go a few days. >No. 390 (Qe5): > >1...Qe5 2.Qa3 Qe1 but then 3.Qa8+ draws by perpetual, and if black is >not careful he loses. > >Recommend: Discard. I have 1. ... Qh5 in an hour as a draw. I had come to the same conclusion about 1. ... Qe5, but I'd like to see the ECM line. >No. 396 (Re6): > >I would call this one (if it's correct) positional, because I can see >the logic of the move but can't find a decisive line. It's not obvious >that white has no other possibilities, or that black is hopelessly lost. > >Recommend: Investigate. Not found in an hour, but something in here wrecked my search, my program didn't get very deep. >No. 397 (Rhg8): > >The key is spectacular, but pointless I think, since white can play a >calm Rf2 leaving black with nothing. > >Recommend: Discard. I get this one quick, and go back and forth on it, and don't see any advantage, but I'd like to see the ECM line and I'd like to run it longer. I ran it for 3 minutes. bruce
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