|visayanbraindoctor: Bridgeburner: PART 1
Lasker vs Schlechter, 1910 is the <8th game of the 1910 title match>.
Quantitative mapping of this game between these players is below. Figures in brackets immediately after each move are the corrected engine evaluations generated on the forward slide following the initial reverse slide after all the moves were inputted into the engine. This process smoothed out many, but not all fluctuation in the engine’s evaluations. General methods used are described in the bio at User: bridgeburner
The evaluation values in the opening come at the beginning of the forward slide following the reverse slide to the starting position from the last move of the game. Engine preferences are included throughout the game where they differ from players preferences.
Some analysis is included to provide some idea of the reason for the engine preferences where they didn’t coincide with the moves played, except in situations where the evaluation differences was very minor.
Lasker again played <8.a4>, a move Capablanca detested. Schlechter responds properly and gains a small advantage. However, Lasker defends impeccably, neither player makes a mistake, and the game is drawn after an almost perfectly played and well contested 42 moves.
<GAME MOVES 1-8>
<1. e4> ( 0.27) <1…e5> ( 0.27)
<2. Nf3> ( 0.30) <2…Nc6> ( 0.30)
<3. Bb5> (=0.19) <3…a6> (=0.19)
<4. Ba4> (=0.05) <4…Nf6> (=0.14)
<5. 0-0> (=0.04) <5…Nxe4> (=0.17)
<6. d4> (=0.17) <6…b5> (=0.17)
<7. Bb3> (=0.17) <7…d5> (=0.17)
<8. a4> ( 0.29):
click for larger view
With an evaluation jump of only 0.46, this does not qualify as a <dubious move> for the purposes of this project, but is nevertheless considered to be a poor quality opening move that theory has essentially abandoned since this match.
Pillsbury and Chigorin appear to have been the only top players to have scored significant success with this move. But probably as a result of its use in this match, this move has permanently fallen from favor. Of the 73 games in the CG.com database with this position, only 11 have been played since WWI, and only once by a “name” player, namely Leonid Stein in Stein vs Suetin, 1962, which ended in a 19 move draw. Capablanca’s notes of the match indicated that he loathed this move, and for good reason as it concedes the initiative for no good reason. It was played by Lasker 4 times in this match, in games 2, 4, 6 and 8, with each game being drawn. His use of the opening was quite puzzling. The only game in the match in which Lasker didn’t play this variation was the fateful 10th and last game which he won, opening with the queen pawn, Schlechter defending with a Slav Defence, Quiet Variation (D11).
Lasker appears never to have played this move in any other serious game either before or after this match, and one can only speculate why he employed it against Schlechter in his title defence.