DKM Shisen (Shisen-Sho) is an interesting variation on Mahjong Solitaire. The aim of the
puzzle is to remove all the tiles from the grid.
The rules are simple. Remove matching pairs of tiles where a matched pair has the same face
and can be connected by three or less lines. The lines cannot pass over another tile but can extend beyond the border of the grid.
There are unlimited puzzles available and all are solvable.
Tileset (tap to change)