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Free online slider puzzle

Programs require a Java enabled browser. With the latest Java 7 Update 51, you may need to add to the "Exception Site List" on the Security Tab of the Java Control Panel and change the security level from "high" to "medium" only if you still have a problem. How To access the Java Control Panel. Click on the Security Tab and move the slider to Medium, this will allow the puzzle applet to load with security prompts. You can also add to the Exception Site List while on this same tab. Click Apply and then click OK. More help
Click on a version below to play


Playing Instructions:
Click on a piece to move it into the empty slot. The solid white piece is the empty slot.
Goal: Arranging the pieces so each pieces is in the correct position.
Hint: Order the numbers sequentially in their natural order starting with 0 in the left upper corner and proceeding right and down. One should do this by sliding either whole columns or whole rows. But there is a caveat. In the original position rows and columns rotate not just slide. This means, for example, that the first element becomes the last when a row is rotated left.

21st slider puzzle