Tapa Borders/en

Instructions

Tapa rules: Paint some cells black to create a continuous wall. Number/s in a cell indicate the length of black cell blocks on its neighbouring cells. If there is more than one number in a cell, there must be at least one white cell between the black cell blocks. Painted cells cannot form a 2x2 square or larger. There are no wall segments on cells containing numbers.

Tapa Borders: Some borders are erased and some borders are thickened. Erased borders mean that those two cells have the same appearance, thus acting like a single 1x2 cell. Thickened borders mean that those two cells have the opposite appearance, one is black and one is white.

History

Variant developed by Palmer Mebane(USA).