Brainteasers

Fourteen Fifteen ★★★★

Below you see a square with fifteen numbered, movable tiles and an empty space in the lower right corner. The tiles are placed in the correct order, except for the tiles numbered "14" and "15", which have been swapped.

The question: How must the tiles be moved, to get all tiles in the correct order, with the empty space again in the lower right corner?

A hint : Clicking the mouse on a tile next to the empty space moves the tile into the empty space. By clicking the mouse on a tile in the same row or column as the empty space, you can move several tiles in one move.

The answer: Click here!

Another question: Starting from the begin position, how must the tiles be moved, to get all tiles in the correct order, but with the empty space in the upper left corner (see below)?

 123
4567
891011
12131415

Another answer: Click here!

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