Play Sudoku on Facebook with Challenge Sudoku

Challenge Sudoku from Zynga is an aptly named puzzle game that seeks to take the mind-bending numbers game and make it even more stressful by introducing a time element. I’ll bill the developers for my coffee intake.

Sudoku, if you’ve been living under a rock the last five years, is a numbers puzzle that has you fill in digits 1-9 in a grid pattern so that you don’t repeat a number in any rows. It’s harder than it looks, and I’m not giving it a proper explanation, but it’s hard.

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