When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
It is a visual logic grid puzzle that starts with an empty grid and numbers on rows and columns. And there MUST be at least one empty tile between the sets. More instructions are given inside the book along with instructions pages.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.