Sudoku Mashup

Sudoku Mashup 2.0 — the biggest update yet. FOURTEEN NEW VARIANTS Arrow, Sandwich, Magic Square, Battenburg, Renban, German Whispers, Between Lines, Zipper Lines, Region Sum Lines, Entropic Lines, Modular Lines, Parity Lines, Ten Lines, and Twelve Lines. Every one ships with a playable intro puzzle and its own rules card, and each line variant has a distinct color so overlapping lines stay readable. New-variant packs and dailies roll out over the coming weeks. FASTER WHERE IT COUNTS Found and fixed the true cause of the mid-play stall when placing or erasing pencil marks — auto-save was freezing the game for a beat, and it grew worse the more puzzles you'd ever played. Saves are now split per puzzle, so saving stays instant no matter the size of your collection, and the board renders at your screen's full refresh rate while you're actively tapping. REMEMBERED, EVERYWHERE Undo history is now saved for every in-progress puzzle — switch between puzzles freely and each keeps its full trail. The killer-cage combos calculator remembers everything across restarts: digit filters, crossed-off combos, and your A/B/C slots. RULES CARDS STATE THE RULE Every variant's rules card now tells you just the rule — the deductions are yours to make.