Knossos Games - Rubber Stamp

Detailed Solution:

	Using the only stamp available, we can fill in the two blocks with hints. Their arrangement is unambiguous because the stamp has only one shaded corner square.
	Next, in the center vertical tier of blocks, there is one column which is to remain empty. Thus all three stamps in the tier must be aligned the same way.
	The bottom two horizontal tiers of blocks, after subtracting the colored squares, now have rows totaling zero. This reveals the position of two more empty blocks.
	The top stamp in the right-hand tier still has one square to be colored per column, so its position will have to be determined horizontally. However, the left-hand tier has a column now totaling zero.
	The last empty block, working horizontally, now has a row totaling zero, which reveals that stamp's position.