It is a game known by ‘Picture Logic’ and ‘PICROSS’.
The pattern concealed in the mass is solved getting a hint from the figure in surroundings.
The figure means putting on the mass with a consecutive stone.
There is one or more masses not put between those at all when there are two figures or more.
click : stone -> ‘?’ -> ‘X’ -> empty
drug : The content of the mass that begins the drug is copied onto the mass since the second.
End : It ends with the check button. ?It is not possible to end when there is a mark.