Coach definition, not a live verdict. These pages show how the X-ray Coach defines this concept and where its thresholds sit, sourced from the coach's own code. Unlike the tactic pages, nothing here runs a live detector — example boards illustrate the rule, they don't execute it.
What it means
- Measures whether you keep enough time for the moments that matter, and how much damage you take when the clock gets low.
The exact rule the X-ray Coach applies
- A move is in 'time trouble' when fewer than 20 seconds remain on the clock.
- Time-pressure blunder rate: share of your blunders that occurred while in time trouble.
Why it matters
Many blunders are not knowledge gaps but clock-management gaps — they happen in the last seconds, not because the position was hard.