Curious Cheetah
Zehnergitter
Background
The origin of this puzzle is not known.
Puzzle and Goal
An unsolved puzzle consists of a rectangular grid with some number clues.
The goal is to fill in all cells according to the rules.
Rules
The solved grid must satisfy the following conditions:
Each row (except the bottom) must contain the numbers 0 to 9.
The bottom row contains the sum of the numbers in each column.
No two neighboring cells can contain the same digit.