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Nolot 05

r2qrb1k/1p1b2p1/p2ppn1p/8/3NP3/1BN5/PPP3QP/1K3RR1 w - - 0 1

Nolot's analysis as reported by Baudot:

Spassky - Petrossian, w ch (19), Moscow 1969

21.e5!! dxe5 22.Ne4! Nh5 23.Qg6!? (This is allright, but 23.Qg4!! Nf4 24.Nf3 Qc7 25.Nh4 +- was even stronger) 23...exd4? 24.Ng5 1-0

Although No program finds 21.e5!! after 8 days, this might well be the first of the 11 positions to be solved by computers in reasonnable time...

Well... He sould have said : No program I have tested... as we now know!

Comments by Feng-Hsiung Hsu:

Took 4 hours to find e5!. 1. e5! de5 2. Ne4 Nh5 3. Qg6... More than a piece up. The minimum time control needed to play it is around 2 hours/move.

My own experience:

I ran this one on a quad 450 mhz Xeon.  Nce2 is +2.  After 66 hours, e5 failed high and resolved at +5 after 93 hours.  So my program got this, but it took a long time compared with Deep Thought.

 
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Last modified: 11/04/02