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Use your mouse and keyboard to fill in the blanks by placing numbers in the right spots. Use the numbers 1-9 in each row, column, and 3x3 square of the board. See how fast you can solve the puzzle. Use the orange guide to see which numbers you've already used in each row, column and square. If it's too hard or easy, you can start a new puzzle with a different difficulty level.
Coolmath top picks
Click to defeat monsters, earn gold and level up heroes. Ascend and transcend to reach new heights of power. See how far you can go!
The classic board game of moving and jumping. Play vs. the computer, or against a friend.
Warning: This game requires a huge amount of concentration and memorization as you run (or skate) through the 3 dimensional courses.
It really is. Don't ask me how to beat it. I can't. But I've seen it done and it's possible. You guys are on your own!
Checkmate! Get your pawns in a row and play this classic strategic board game. Play vs. the computer, a friend, or join a match against another online player.
A great business game where you run your own coffee shop. You have to plan your budget, your recipe and how much to charge.
The sequel to the popular Gluey! Group and remove blobs of the same color to get them to disappear. You're going to have to think and plan ahead!
The classic singleplayer card game. Choose your difficulty, and see if you can stack all four suits, Ace to King!
An easier twist on classic Solitaire. Play with 1, 2 or 4 Suits and try to remove all of the cards from the board!