Dotchi-Loop

Game Rules: Dotchi-Loop

Draw a loop through every white circle and avoid the black ones. Within a room the loop must either turn at every white circle or go straight at all of them.

Draw one orthogonal loop through every white circle and no black circle. It cannot cross, branch or revisit a cell. In each bold-outlined room, the loop must go straight at all white circles or turn 90° at all of them. Each room chooses independently. Blank cells may be visited or left unused; they need not follow the room's circle mode. Drag between centres to draw; tap an edge to toggle a line, hold it to toggle an exclusion cross. Repeat to erase.