Articles on Chess

StockFish 7 and time control

A "quick" comparison on the ELO increase when allowing more time in Stockfish 7 self-plays (ratios are tried from 1:1 upto 16:1)

Number of games were 100 in every cases, the error bars are related to 95% confidence interval. The reference timing was: 10/15 (10min+15sec), the games were running on 4 cores with "Ponder Off" and with 2048 MB hash. The opening book was used with 2 plies depth to provide the necessary variety. 

2022 / Dec / 31.

The distribution of the positional entries in the actual version(s) of the opening book: (2025 July 1, version: Alpha 45) (The primary goal this month was to increase the number of entries between plies 14-24).

https://www.patreon.com/analysis4chess

The Alpha versions of the book are intended to be wide in repertoire, with uniform move distribution and with slow increase in depth. The upcoming Beta versions will be more narrow, with weighted distributions of the moves.

2025. July 1.