Sudoku
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
Checkmate! Play the classic strategic board game. You can challenge the computer, a friend, or join a match against another online player.
Don't crash! Leap over the hurdles and across the platforms to reach the finish line. It's hard to be an Olympian. Can you beat the first level?
Ever played the classic game Snake? Slither around and eat the apples to grow your snake as long as possible. But don't hit the wall, or eat your own tail!
How's your three-point shot? Aim over defenders and obstacles, or smash right through them!
Hop in your helicopter and join this strategic multiplayer game. Specialize your copter, build a base, and conquer the map!
Launch zombies out of a cannon and into the happy faces in this crazy sequel. Take aim and let those rag dolls fly!
Run through the maze and obstacles to get to the burger stand. You only have 60 seconds, so you better start running!
Slice the jelly blob into pieces so that no pieces have more than one star. Try to do it in as few moves as possible!
It's rush hour and you're stuck in the parking lot. Move the other cars out of the way so you can reach the exit.
