Mobiriti ("Mobility") is to blacken some cells of a grid. Cells with circles can not be blacken. A number in a circle indicates how many empty white cells can be reached from that cell by moving horizontally or vertically.
Mobiriti A number in a circle indicates how many empty white cells can be reached from that cell by moving horizontally or vertically.
Oases Each circled number represents the number of other circles that can be reached from that circle by only going through empty (unshaded and uncircled) cells.