Sun or Moon
Place a sun or a moon in each cell so that no 3 line up, in a row, column, or diagonal.
About the Puzzle
Place a sun or a moon in each cell so that no 3 line up, in a row, column, or diagonal.
40 Puzzles
Sun or Moon #01
Sun or Moon #02
Sun or Moon #03
Sun or Moon #04
Sun or Moon #05
Sun or Moon #06
Sun or Moon #07
Sun or Moon #08
Sun or Moon #09
Sun or Moon #10
Sun or Moon #11
Sun or Moon #12
Sun or Moon #13
Sun or Moon #14
Sun or Moon #15
Sun or Moon #16
Sun or Moon #17
Sun or Moon #18
Sun or Moon #19
Sun or Moon #20
Sun or Moon #21
Sun or Moon #22
Sun or Moon #23
Sun or Moon #24
Sun or Moon #25
Sun or Moon #26
Sun or Moon #27
Sun or Moon #28
Sun or Moon #29
Sun or Moon #30
Sun or Moon #31
Sun or Moon #32
Sun or Moon #33
Sun or Moon #34
Sun or Moon #35
Sun or Moon #36
Sun or Moon #37
Sun or Moon #38
Sun or Moon #39
Sun or Moon #40
Frequently asked questions
Sun or Moon is tagged for Grades K-12. Puzzles within it get harder as your child improves.
40 Sun or Moon puzzles, each a fresh layout of the same rules.
No: Sun or Moon plays directly in the browser, right on this page. No login, no download.
Sun or Moon trains binary constraint satisfaction, deciding between exactly two options under a strict rule.