BeginnerPractice

Practise: Last cell in a cage

This Killer puzzle stalls at exactly the point where Last cell in a cage is needed. Work it out yourself, or jump straight to that position.

Skip the obvious cells and start where the technique matters.

Practice

Mistakes0Score2,000Time0:00

How to spot it

After every digit you place, glance at its cage. If only one empty cell remains, subtract the placed digits from the cage sum and write the result.

Medium grids are where this move starts to matter: the obvious cells run out and the pattern takes over.

Type the position into the solver and it walks the whole solution, naming the technique behind every step — including this one.