Saturday, July 01, 2006

First Try With My New Move Search Heuristic

Okay, we all know that White can move 8.Nb5! here and probably wins. But this is not the point. Will my new method be able to find this move, even if I wipe the whole opening book out of my brain and if I restrict pattern recognition to a one-move level? That is, seeing a knight fork in one, but not a knight fork in two moves. White to move:

Bishop is hanging. This problem has to be solved at quiescence, but not before.

White to move. No check. Captures on e6 and d7 to be discarded at first sight. Threats: 8.Nb5 to capture the Queen, no other threats. Nb5 is the first initial candidate move.

Black to move. No check. One capture: 8.-Qxc4 winning the Bishop, but White, one check, 9.Nd6+ and one capture, 10. Nxc4 winning the Queen. Safety check positive: 8. Nb5 is a final candidate move.

Black has to discard his capture, leaving him with no check, no capture and no threat. Other moves: 8.-Qd8, Qb6, Qa5, Qc6, Qc5. White in any case check 9. Nd6+ and the King must move, losing his right to castle.

Principal variation: 8.Nb5 Qd8 9.Nd6+ Kf8.

White to move. No check. No capture, because any capture that removes the excellent Nd6 from the board must be discarded. No significant threats on both sides. The position is quiet and safe.

Assessment: White is still down a pawn. Compensation has improved markedly: Excellent Knight Outpost on d6, advantage in space. Black King is unsafe. Black Rooks are buried for a long time. Black is behind in development by several tempi. Big advantage for White. No other candidate move has to be considered.

Decision: 8.Nb5 is to be played. Sanity check positive: No other piece is attacked (Bc4 has passed the safety check before). White plays 8.Nb5!

Note that 8.Qe2? (actually played in the game) not even shows up in the initial candidate move list! Why not? Simply because this is a quiet and passive move and thus not worth being the top candidate in a tactical situation.


At 7:37 AM, Blogger generalkaia said...

interesting method. does it seem to work on any position? tactical or otherwise?

At 9:32 AM, Blogger Temposchlucker said...

I'm curious where you are going to lead us.


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