




We now want to solve the example on the right together. This is certainly not the most difficult puzzle.
The point here is just to show how one actually approaches solving a Sikaku puzzle
approaches. 





Let's start in the bottom right corner. The 4 boxes cannot be horizontal
still form a vertical row of 4, so they have to form a 2x2 square. 





The 3rd bottom right above the 4th must connect vertically to the 4th without any gaps,
since the box under the 3 cannot be covered by any other rectangle.
So the 3 is vertical. 





The number 6 next to the number 3 on the right must be horizontal (3x2); the 4 series below
Form a 2x2 square. 





The number 12 next to it must be horizontal (3x4), the number 6 at the bottom left must be vertical
stand (3x2) 





The bottom two 6s must be horizontal (3x2). The number 3 on the right must be vertical
stand (3x1) and the right 12 must nestle in the bottom right corner: 





For the remaining 12 there is only one option: 





The rest takes care of itself. 