Nr. 151 - Lösung
There is cutting of square 7x7 into six rectangles with equal S and D: (2*6)*(4*1)*(1*6)*(4*5)*(5*1)*(2*1)=57600 (2-6)^2*(4-1)^2*(1-6)^2*(4-5)^2*(5-1)^2*(2-1)^2=57600 And the best result on this puzzle is 7.