Author: Miguel A. Ballicora
Date: 15:11:51 09/25/01
Go up one level in this thread
On September 25, 2001 at 14:23:26, Simon Finn wrote:
>On September 25, 2001 at 13:48:55, Miguel A. Ballicora wrote:
>
>>On September 25, 2001 at 12:30:20, Simon Finn wrote:
>>
>>>On September 24, 2001 at 18:13:09, Miguel A. Ballicora wrote:
>>>
>>>>On September 24, 2001 at 17:41:22, Miguel A. Ballicora wrote:
>>>>
>>>>>Just to start a thread on this and post a diagram, Peter Berger
>>>>>thinks that Qh6 could be another solution.
>>>>>
>>>>>[D]2r2rk1/pp2pp1p/2np2p1/q4P2/2PBP1b1/2N5/PP1Q2PP/R4RK1 w - - bm h3; id
>>>>>"ECM.1527";
>>>>
>>>>I've been thinking for ~10 minutes here in front of the screen and I do not
>>>>see how black can be saved after 1.b4.
>>>>1... Nxb4 2. Nd5 threats mate in e7 and the Knight in b4 that is pinned.
>>>>1... Qxb4 2. Qh6 f6 (Nxd4 3. Nd5 mate in e7 and queen in b4)
>>>
>>>After 2... Nxd4 3. Nd5 Qc5 where is the mate?
>>
>>Nowhere!
>>I did not mean mate in e7 in the second sentence. It was a "Lapsus"
>>after typing the first sentence. I meant mating attack (after taking in e7
>>and/or in combination with f6 or fxg6 etc.).
>>Anyway, it is not correct what I meant!. I did not see that Qc5 threats Nf5+!
>>
>>Still the position is very promising for White, I think, if you let me change
>>the PV. I will need to check thouroughly but
>>1.b4 Qxb4
>>2.Qh6 Nxd4
>>3.f6 (better than Nd5?) Ne6
>>4.Nd5 creates a lot of problems to black. After Qc5+
>>5. Kh1 the threat is fxe7 - Nf6+ and that looks good. A quick check with
>>Gaviota from this position seems to confirm this.
>
>Doe White have better than this?
>
>5 ... Kh8 6. fxe7 f5 7. exf8Q+ Nxf8
>
>Black is worse, but I wouldn't resign it.
Actually, this position is resignable after 8.exf5
Black cannot play 8... Bxf5 because of 9.Rxf5 gxf5 10.Qf6+ and Ne7#
If black cannot retake in f5 White is exchange up with an unstoppable
attack. 9.f6 is a serious threat and also fxg6 and Rf7. Feeding this position
to Gaviota I found this
2330313 8: 20.5 +5.20 e4xf5 Bg4-f3 Nd5-e7 Bf3xg2
<-transp
3651989 9 32.5 :-) e4xf5
3883252 9 34.5 +5.51 e4xf5 Bg4-f3 Rf1xf3 Qc5-d4
Ra1-c1 Qd4-e5 f5-f6 Nf8-e6
f6-f7 Qe5-g7 Qh6xg7 Kh8xg7
4685131 9: 41.5 +5.51 e4xf5 Bg4-f3 Rf1xf3 Qc5-d4
Ra1-c1 Qd4-e5 f5-f6 Nf8-e6
f6-f7 Qe5-g7 Qh6xg7 Kh8xg7
8828289 10 79.3 :-) e4xf5
15452000 10 136.5 +6.03 e4xf5 Qc5-d4 f5-f6 Nf8-e6
Nd5-e7 Bg4-f5 Ne7xc8 Qd4-c5
Nc8-e7 Bf5-d3 f6-f7
20459370 10: 179.3 +6.03 e4xf5 Qc5-d4 f5-f6 Nf8-e6
Nd5-e7 Bg4-f5 Ne7xc8 Qd4-c5
Nc8-e7 Bf5-d3 f6-f7
Black does not do better than a rook and exchange down.
rewinding a little, rather than taking in f8 with the knight, if
7....Rxf8
8.Nf4 wins another piece. (or Re8/ Nxe6 Rxe6/ Qf8#)
To confirm it:
11808844 10 104.0 +3.43 Nd5-f4 Rf8-f7 Nf4xe6 Qc5xc4
Ne6-f4 Rf7-g7 Ra1-c1 Qc4-g8
h2-h3 Bg4-h5 Nf4xh5 g6xh5
So Black end up with a rook down.
We should look for alternatives earlier, but it doesn't look that there are
many.
Regards,
Miguel
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.