Friday, September 4, 2026Vol. I · No. 44Free · eloist.com

The Daily Eloist

All the chess that's fit to print.
From the Files

In the Alekhine Defense, the Lichess archive holds 24.9M club games (1600–2000) that reach this position.

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The top reply e5 is chosen 54% of the time and scores 49% for White.

The Opening Files · No. 2

A game without a blunder is the exception.

For the typical player in the corpus, 20.1% of their games contain no blunder at all, about one in five, with the middle half of players between 16.1% and 24.6%. Measured across 469,787 analysed games from 253 players.

The figure is the median PLAYER's rate, not the corpus average: one prolific account holding a sixth of the games would otherwise be reported as though it were everybody. Playing a clean game is not the standard an amateur is failing to meet; it happens about one game in five.

Across 469,787 analysed games from 253 players.

The Opening Files runs again tomorrow.