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Subject: Re: 2 Intuitive move test positions

Author: John Merlino

Date: 19:09:13 06/02/05

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On June 02, 2005 at 19:53:39, ludicrous wrote:

>The first one is:
>
>[D]2bqkb1r/1r1n1ppp/p3p3/np6/4PB2/2N2NP1/P1Q2PBP/3R1RK1 w k - 0 16
>
>White to move.  Umansky played Nd5!!

This looks like a sound sacrifice. However, CM9_R1 does not find it on an AMD
2500 in under three minutes.

>The next is:
>
>Tal Mikhail (LAT) - Larsen Bent (DEN) [B82]
>Ch World match (1/2) Bled (Yugoslavia), 10.03.1965
>
>[D]rqb2rk1/3nbppp/p2pp3/6P1/1p1BPP2/2NB1Q2/PPP4P/2KR3R w - - 0 16
>
>Tal played 16. Nd5!

But THIS looks like one of those infamous Tal "sacrifices" that did nothing more
than put the fear of God into his opponent. The King prefers many different
moves for Black other than the ones that Larsen played:

17...g6 (score of -1.25) instead of 17...f5 (-0.50)
18...Bd8 (score of -1.94) instead of 18...Rf7 (-1.05)
19...Nc5 (score of -1.27) instead of 18...Bb7 (+0.75)

Of course, this requires more intense analysis, but the early verdict is that
Tal stole another one.... :-)

jm



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