Colour Sort: plan two pours ahead

With no undo button, the two spare tubes are your only safety net — here is how to spend them.

What we actually do

Open the game, play three slow rounds without chasing score, and watch one thing only: With no undo button, the two spare tubes are your only safety net — here is how to spend them..

The checklist

• Read the field before you act, not while you act.
• Commit to the safe line for the first thirty seconds.
• Only then start taking the greedy option.

Practice routine

Five minutes a day beats an hour on Sunday. Three slow rounds, three normal rounds, then stop — stopping while it still feels easy is what makes the next session good.