Dotsy

The classic pencil-and-paper game of dots and boxes, drawn like a technical sheet. Players take turns drawing one stroke between neighbouring dots. Close the fourth side of a cell and it is yours, stamped with a number, and you draw again. When the grid is full, the player with more boxes finishes first. First line • Four grids to choose from: 3×3, 4×4, 5×5 and 6×6 boxes, with dots marked by letters and numbers along the edges. • Choose who draws the first line, you or your rival, before each match. • Orange ticks warn when a stroke would give away a third side, and you can turn these warnings off. Second line • Easy takes what it can and draws almost at random. • Medium always claims open boxes, never hands over a third side and gives away the shortest chain when it must. • Hard plays the long-chain rule, leaves a double-cross when control pays and plays perfectly in the last stretch of a match. • Pass and play lets two people share one device as orange and cobalt. Closing the box • Puzzles: 21 endgames on 3×3 and 4×4 grids with no safe line left. Each asks you to take an exact number of boxes against perfect defence, and they open as you solve them. • Achievements: 15 stamps, from First Sheet to Endgame Student. • Quiz: 10 questions per round from 26 real facts on paper games and recreational mathematics, each answer marked right or wrong with a short note. Final count • Records keep matches, finishes in first place, boxes claimed, the longest turn, the widest margin, solved puzzles, results per level and a log of the last 25 matches. • A pale grid of dots drifts and pulses in the animated background while lines draw themselves now and then. You can switch it off in Settings, next to haptics, third-side warnings and a progress reset. • The game plays fully offline, needs no account and has no sound.