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Logic Puzzles

Logic puzzles to engage the brain and complement programming. Calcudoku, Sudoku and Alphadoku puzzles challenge logic and deductive reasoning skills while activating problem solving skills in regular and home schooling classrooms.



Independence Day!

Are you ready for July 4th? Here are quick links to our collection of Declaration of Independence Day puzzles: Declaration of Independence. If you want July 4th, United States states puzzles, then check out the history link: Fourth of July.

We continue to grow! Our collection of Parts of a Plant has been updated and is growing to 76 puzzles. Here is the direct link here: Parts of a Plant. Enjoy!