This is a variation of sudoku that uses spatial logic and reasoning. The numbers in the grid represent skyscrapers of varying heights. The numbers on the side of the puzzle indicate how many skyscrapers you could see if you look from that spot.
There are 40 puzzles for each level of difficulty - 5x5. 6x6, 7x7. 8x8. and 9x9.
Grab this perfect gift for puzzle lovers, sudoku lovers, seniors (large print!) or kids working on spatial skills!