Analysis of Gathering Strays

This three-star logic puzzle has 4 noun types, 5 nouns per type, 1 link, 15 facts, and no rules. It needs 150 marks and 6 grids.

This puzzle is easy for the developer to create its puzzle module. There are no links to define, and no rules to create. The 8 clues can be expressed in 15 facts.

This puzzle is also easy for the Mystery Master to solve. If I can think of anything out of the ordinary about this puzzle, I will let you know.