The metric that matters is not "puzzles solved" but "pattern frequency change." If your Conversion Failure appeared in 40% of your games last month and only 25% this month after targeted training, that 15-point drop is a concrete, measurable improvement — regardless of how many puzzles you solved to get there.
ChessLogix tracks this automatically. Your pattern dashboard shows frequency trends over time, correlated with your training activity and rating trajectory. This is the same data a coach would use to evaluate whether a training prescription is working — now automated and available after every game batch.
Most players find that 10-15 minutes of focused, pattern-matched puzzles per day produces more measurable improvement than an hour of random tactics. The constraint is relevance, not volume. When every puzzle targets your actual weakness, the training is dramatically more efficient.