If your child is done with easy- and medium-level picture Sudoku maybe she's ready for this one.

This Christmas brainteaser features two pages of colorful medium-level picture Sudoku for young kids.

Build math and logic skills with this holiday-themed Sudoko puzzle.

This winter, curl up with a mug of cocoa and a tricky puzzle!

Step into the snowy winter season with this skating-themed sudoku puzzle!

Watch your logic skills soar as you solve this snowy sudoku puzzle!

In this cheerful activity, enjoy the snowy weather without getting cold!

Have a bear-y fun time with this winter-themed puzzle!

Track down Maya’s new mittens using your logical reasoning and problem-solving skills! 

Don't let your mind go numb this winter break! Stay sharp with a challenging Sudoku puzzle.

Put a wonderful winter spin on math and reasoning practice with this festive sudoku puzzle!