Author: Amir Ban
Date: 14:34:30 01/27/98
Go up one level in this thread
On January 27, 1998 at 12:45:49, Bruce Moreland wrote: You managed to put in here a lot of processor time in just a few hours. Great. > >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. > Ok. Unless you have a clear line for Nd5 we should discard it. >>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. > Keep it. >>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? > Yes and an attack. Looks like Rxf6 is bad but routine attacking moves get an advantage so let's discard it. >>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. > Mistake. Change that to 335 and retry. >>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. > So side solution. >>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. > It's reasonable to find it, but where's the win ? >>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. > What line ? I mistrust this one even if you found it due to line I posted above. >>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. > I suspect the ECM line neglected the Ka8 possibility. >>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. > Good idea. I thought about the d5 square, but there's no way to put the knight there. >bruce Amir
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