Whisker Grid

1. Once each. Every row, column and box holds each number once.
2. Pick, then place. Tap a cell, then a number.
3. Many at once. Hold a number to keep it, then tap cells to place it.
4. Pencil notes. Notes are free: jot what might fit.
5. Three lives. A wrong number costs a life.

A fresh Daily every morning, the same for everyone, and 1,000 practice levels from gentle to tricky.