At higher levels, the difference between a 25-minute solve and a 10-minute solve is not more knowledge—it’s optimization. Speed comes from reducing waste: fewer stalls, fewer re-checks, cleaner candidates, and better momentum.
Use a fixed cycle (rows → columns → boxes → patterns). Random switching slows cognition.
Spend 20–30 seconds building a mental map of dense areas and constrained boxes before you start.
Target intersections where one elimination triggers a cascade of new singles or pair formations.
Clutter hides patterns. Update candidates consistently.
When you get a cascade started, stay in that region until it dries up.
Practice quick validation of row/col/box constraints on easier puzzles to make checking automatic.
Fast solving is calm solving. Optimize your workflow, reduce stall time, and your speed will improve without sacrificing accuracy.