Development

Grandmasters start winning by playing deliberately suboptimal moves

development2026-03-29

Claim

Chess grandmasters, all training on the same optimal engine lines, are now winning by playing suboptimal moves their opponents have not practiced.

Reporting date: 2026-03-29 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

Welcome to March 29, 2026 (theinnermostloop.substack.com)

When everyone studies the same perfect play, divergence becomes the only edge.

Knowledge graphopen in browser →

Reported in

Welcome to March 29, 2026

Evidence for

Referenced by

Welcome to March 29, 2026

Cite or correct this record

Citation formatCitation text

Grandmasters start winning by playing deliberately suboptimal moves
Innermost Loop KB — secondary record
Reporting date: 2026-03-29
KB permalink: https://nicholsn.github.io/innermost-loop-kb/developments/2026-03-29-grandmasters-win-by-playing-worse
Claim: Chess grandmasters, all training on the same optimal engine lines, are now winning by playing suboptimal moves their opponents have not practiced.
Attributed sources:
- Welcome to March 29, 2026 — https://theinnermostloop.substack.com/p/welcome-to-march-29-2026
This citation does not imply independent verification of linked-source claims.

Suggest a correction — opens a GitHub draft for you to review and submit.