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Subject: Re: WAC Corrections

Author: Gian-Carlo Pascutto

Date: 12:24:21 04/12/01

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On April 12, 2001 at 13:24:02, Dann Corbit wrote:

>>	#296		Rd8-d4			DELETE book solution
>>			Bc6-d7			correct solution
>
>I have:
>3r4/1p2k2p/p1b1p1p1/4Q1Pn/2B3KP/4pP2/PP2R1N1/6q1 b - - bm Rd4+ Rf8; id
>"WAC.296";
>This one is pretty topsy-turvy compared with your notes.  Hence it will need
>analysis and verification.

Rf8 and Bd7 win

I get the following nice PV after Qc5+ Ke8 Qe5:

depth=7 -8.56 3. ... Qh2 4. Qh8+ Ke7 5. Qxh7+ Kd6 6. Qxg6 Qg3+ 7. Kxh5 Rh8+ 8.
Qh7 Rxh7+ 9. Kg6 Rxh4 10. Nxh4 Be8+ 11. Kg7 Qxg5+ 12. Kf8 Qxh4 13. Bxe6 <HT>

after a while it picks f4 instead of Qc5+:

depth=8 -5.65 2. ... Qh2 3. Qxe3 e5+ 4. Kf3 Qg3+ 5. Ke4 Bc6+ 6. Kxe5 Qg4 7. Qc5+
Ke8 8. Qd6 Rxd6 9. Kxd6+ Kd8 10. Re7 Qxg2 11. Rxh7 Qd2+ 12. Ke5 <HT>

after your recommended Kh3 I get:

depth=8 -19.65 2. ... Qh1+ 3. Kg4 Qh2 4. Bb5 Qxe5 5. f4 Qxb5 6. Rc2 Qf5+ 7. Kf3
Qxc2 8. Nxe3 Qxb2 9. Nc4 Qxa2 <HT>

>>
>>#296	Rd4+ does NOT win.  The main line is,  1... Rd4+  2. Qxd4 Qh2
>>	3. Bxe6+! Ke7  4. Qb4+ Ke8  5. Qe1 Bb5  6. Rc2 e2  7. Rc8+ Ke7
>>	8. Qb4+ Kxe6  9. Qe4+  and white will draw by perpetual check.
>>

Rd4 Qxd4 Qh2 Bxe6 and I see no check so Qg3 mate follows

--
GCP



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