Does not solve all puzzles

[david-pfx]

Your solution uses 3 algorithms. For each row and column:

• If a number can only go in one place it must go there
• If only one number can go in a place it must go there
• If two numbers can only go in two places they cannot go anywhere else.

These algorithms are not enough to solve puzzle 5-14 (and others) in Cross Set Infinity.

A stronger algorithm is needed, possibly guess and backtrack?

[PartlyAtomic]

Thanks for the heads up, I'll look into those when I have the itch again!