Puzzle perfect solution
.......................\add.m
.......................\createM.m
.......................\exchange.m
.......................\game_complete.mat
.......................\improverref.m
.......................\mod2.m
.......................\output.m
.......................\rank2.m
.......................\rank3.m
.......................\rref2.m
.......................\solution.m
.......................\solution2.m