Biyaherong Chess Coach icon

Biyaherong Chess Coachv1.0.11

Released October 23, 2026Major

iOS

What changed

  • New featureAdded a free Chess Clock with customizable time controls and presets.
  • UXImproved puzzle navigation to return users to the same puzzle.
  • UXUpdated puzzle UI to show rating changes immediately after solving.
  • PerformanceFixed puzzle engine suggestions carrying over from previous sessions.
  • ContentAdded three new board themes (Classic Brown, Tournament Green, Blue).
  • PerformanceFixed accuracy percentage display formatting.
  • PerformanceRestored functionality of the rating chart drawing.

Original release notes

New: Chess Clock — free for everyone. Pick a preset from Bullet to Classical or set your own time control, with increment or delay and different times per player for coach games.
Puzzles: going back now returns you to the same puzzle, your updated rating shows right after each solve, and the previous puzzle's engine suggestions no longer carry over.
Board themes: choose Classic Brown, Tournament Green or Blue in Profile → Board Theme — it applies to every board in the app.
Also: accuracy now shows correctly (e.g. 91.7%) and the rating chart draws again.

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