15 Slider Number Puzzle

15 Slider Number Puzzle: consists of 15 squares numbered 1 to 15, which are placed in a 4x4 box leaving a blank 16 position. The goal is to reposition the squares of a disposition given arbitrary starting by sliding them one at a time in the configuration shown above (for some initial arrangements, this rearrangement is possible, but for others, it is not).

The objective is to move the tiles so that they are in the order of 1 to 15 with the lower right white.
No wonder that Sam Loyd drove everyone crazy by his variation puzzle is formulated 15. The problem was unsolvable. When you bought 14-15 Loyd puzzle empty place is placed at the bottom right. The pieces were numbered in order from left to right and top to bottom; Only numbered pieces 14 and 15 were reversed. You must rearrange the pieces so that all parts are in the correct position and the vacuum should be placed in the lower right. A slide puzzle with square pieces can only be resolved when the number of exchanges necessary to solve the puzzle is even.

Clicking on a tab to move, provided that is adjacent to the blank.
A nice variation puzzle basic slide is a puzzle with 15 numbered pieces, 0 (empty space) to 15 with the instruction to drag the pieces so that the sum of all lines and the sum of all columns and the sum of the diagonal equals 30. such control is called a magic square.

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