Elite chess players beat amateurs because they think with higher precision, not because they are better at managing their clocks.
April 29, 2026
Original Paper
Rational Inattention in Chess: Structural Estimation of Cognitive Precision Under Time Pressure
SSRN · 6665797
The Takeaway
Analysis of 36 million moves shows that the performance gap is almost entirely due to cognitive accuracy under pressure. Clock management and time allocation strategies have almost no impact on the win rate of top-tier players. Most fans and coaches assume that knowing when to think deeply is a major differentiator at the highest levels of play. The real bottleneck is pure mental precision regardless of how much time is left on the timer. This implies that training for speed or time strategy is a waste of effort compared to improving raw calculation accuracy.
From the abstract
How much of the performance gap between skilled and unskilled agents reflects cognitive precision, and how much reflects the allocation of scarce deliberation time? This paper estimates a structural model of rational inattention using approximately 36 million chess move decisions by 243,595 players, a dataset constructed by submitting every position to Stockfish 18, evaluated at a fixed 20-millisecond time limit per position, to obtain ground-truth utility values for each candidate move. The sig