Author: Albert Silver
Date: 09:56:55 03/24/99
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On March 23, 1999 at 18:13:57, Dann Corbit wrote:
>In my previous message today, I asked about a position with a preferred move of
>Qd2.
>
>What I am wondering is the following:
>1. Is that really the best move and how do we know?
>2. If it is the best move, can someone provide a pv?
>3. Does anyone know the exact game this position was taken from originally?
>4. If it is not the best choice, is the one provided better? Worse? Why?
>(OK that's three questions in #4 but it does not look like as many this way).
1) Yes. Experience basically. Years and years of GMs playing it and other moves.
2) PV? Well, Junior, who chooses this move, gives it 0.27 after 17 of it's
half-plies. Hiarcs has it for it's second choice, preferring Be2 (0.74/9), with
a pv of 0.66 after 9 full plies. Fritz 5.32 thinks it's the 3rd best move with a
pv of 0.19 after 12 full plies.
3) First example I have is Alekhine-N.N., Paris Simul, 1925. Alekhine really is
the one who gave it a stamp of respectability, though others played it before
him, when at Margate in 1937 Foltys used it to beat Berger in the 3rd round and
then Alekhine used it to beat Foltys 3 rounds later.
4) I'll say this about the computer's Bb5. Just an opinion mind you. If White
wants to castle queenside then Bb5 has a number of problems:
- Too early to develop it there considering you don't know where it will be best
positioned. (Be2, Bd3, and even Bh3 after preparing it)
- Bb5 can only lead to a simplification and a loss of tempo (after Bd7 and a6 or
0-0), a loss of tempo when you retreat the bishop after Bd7 and a6, or a
simplification and a loss of the bisop pair after taking c6 with the bishop.
- What plan exactly is it contributing to?
If White wants to castle kingside then the bishop is poorly placed there for the
same second and third reason above so Be2 would be better controlling the d1-h5
diagonal as well (allowing f4-Bf3 in some positions or preventing Ng4 after
moving the queen).
Albert Silver
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