The best logical puzzle game! simple rules but fascinating and tricky!

With no doubt it is not hard, but the real challenge is to find the shortest way to join red with red box, or just simple enjoy in brain testing with harder levels.

->There are several types of boxes. Two sizes, small and large. There is always one small red box and one large red, and there can be more black boxes of both sizes.

->Red dot is an active element. You control it’s movement with slide.

->Dot can be moved to a empty neighbor cell, or to cell with a box opened to the side where dot is.

->Dot can move box when is inside it, to any allowed direction except box open side. Allowed direction is to empty cell or cell with larger box opened to moving dot and box. So, a smaller box with dot can enter into larger. Inside dot than can move both box to allowed direction of large cell⋯

->Small red box inside large red marks that door is opened. Dot get away from the grids.