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 game of strategy. You can challenge the computer, a friend, or join a match against another online player.
Hop in your hot air balloon and prepare for adventure! Solve a whole new quest on every island.
Wait...Not yet...Go! Bounce the candy at the perfect time to get through the moving obstacles.
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!
Activate the power bounce! Can you find a way over the spikes and past the guards to jump into Basket?
Swing your way through each challenging course without hitting anything. How many tries will it take you?
Take a deep breath and get your finger ready! Can you pass the ultimate one-button challenge?
You've got a limited number of slices to cut the wood into the correct number of pieces. Be precise when you slice!
Hop in your helicopter and join this strategic multiplayer game. Specialize your copter, build a base, and conquer the map!
Hey you, stop! And you, drive! Wait...no... you're going to crash! Take control of the roads to keep traffic moving. One mistake might cause a 10-car pileup.
