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Subject: Re: Three studies by Kubbel

Author: John Merlino

Date: 18:58:58 05/12/05

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On May 12, 2005 at 15:53:31, Randy Lovelace wrote:

>[D] 8/p5pq/8/p2N3p/k2P3P/8/KP3PB1/8 w - - bm Be4;
>
>pv 1.Be4 Qh6 2. Qd2 Be2 3. Qc2 Bd1 4. Qxd1 Nc3+
>
>[D] 3b2q1/2kPp3/1p1pp3/1Pp4p/4QP2/p1P2P1P/2KPb3/5n2 w - - bm Qa8;
>
>pv 1.Qa8 Ne3+ 2.dxe3 Bd3+ 3.Kxd3 c4+ 4.Kxc4 e5+ 5. Kb4 Kxd7 6. Qc6+ Ke6
>    7. Qd5+ Kxd5 8. f5 e4 9. f4 Qg1 10. c4#
>
>[D] 1B6/2p1p3/2P5/Qpk1K1p1/4p1qp/8/8/8 w - - bm Qc3+;
>
>pv 1. Qc3+ Kb6 2. Ba7+ Kxa7 3. Qa5+ Kb8 4. Qxb5+ Kc8 5. Qb7+ Kd8 6. Qb8+ Qc8
>    7.Qb3 e6 8. Qb7 h3 9. Kf6 h2 10. Qb4
>
>I tested these with prodeo not found in 10 minutes.
>
>Randy Lovelace

With CM9_R1 on an AMD 2500:

First position, not found in 5 minutes.

Second position, found in 7 seconds, with your line up through and including
7.Qd5+. The response 7...Kxd5 (from your line) is the worst possible move,
leading to a Mate in 4 for White. But 7...Kd7

Third position, found in 1 minute, 31 seconds, with your line up through and
including 8.Qb7.

jm



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