Author: Amir Ban
Date: 03:40:46 01/25/98
Go up one level in this thread
On January 23, 1998 at 14:20:07, Howard Exner wrote: >On January 22, 1998 at 18:51:06, Amir Ban wrote: > >> >>Here's some more work for everybody: >> >>No. 206 (Nxc7): >> >>Looks incorrect: Nxc7 Qxc7 Qd5+ Kh8 Bxd6 and now white has a nasty >>surpise with Nb6. >> >>Recommend: Throw it out. > >Try Re8, instead of Bxd6? ie Nf6 2.Rxf8 Bxf8 3.Bb2 Bg7 4.Bc4 ... >> Yes, very neat. Should be hard since 4.Bc4 is hard enough in itself. >> >>No. 231 (Rxd6): >> >>The point of the key is not obvious to me. I find Qh4+ which wins >>material. >> >>Recommend: Change key to Qh4+. Check this out. > >1.Rxd6! Qxd6 2.Rd1 Qb8 3.Rxd7 1-0. This looks quicker than Qh4. > Perhaps, but why ? I still don't see it. >> >> >>No. 237 (Bf2+): >> >>Junior's recommendation for black here is to resign. Bf2+ seems like a >>particularly bad move. Anyone can say what the point is here ? >> >>Recommend: Throw it out. > >Rebel plays Rd1+ immediately with a big plus. This should be the key >move. >Involves a Knight under promotion. > I stand corrected. Junior does not consider underpromotions. >>No. 274 (Qxf3+): >> >>One of those where the cook is prettier than the original. The idea is >>the discovered check d4, but Qxf3+ is sloppy execution. Nd2! is right. >> >>Recommend: Change key to Nd2. > >Agree and also the simple Ng5 should transpose as white's reply, Nd4 >seems forced in both lines. Again, it is too easy. >> Agree. So Nd2, Ng5 are the solutions. >>No. 287 (Qb5+): >> >>Looking at the position, the assignment "white wins" seems impossible. I >>only see that Qb5+ draws, and so does Rc8+. >> >>Recommend: Investigation necessary. > I stand corrected. >Both win after lots of forced checks and a Knight under promotion. >The lines seemed forced for white and I think programs will stumble >onto the win either initially or by accident rather quickly. >> >> >>No. 300 (Kxd5): >> >>I find Bh2 Ke6 f5+ and this looks like a comfortable win. I don't see a >>win after Kxd5 and it looks dubious. >> >>Recommend: Since Bh2 is trivial, throw it out. > >Yes it is easy but Kxd5 I think wins more quickly. The resulting N&pawns >vs N&pawns ending is elementary. The other way still poses the problem >of the two passed a pawns with the wrong colored bishop. It would still >be an elementary win for strong humans. Computers would have to be >careful >not to lose the kingside pawns for a piece. I don't find this ending elementary: 1.Kxd5 Nxg3 2.a6 Bb6 now if 3.a7 Bxa7 4.Nxa7 Ne2 and white gives back a pawn, or probably better is 3.a4 but not totally satisfactory. Who needs the aggravation when he can play Bh2 ? Amir
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