Twindoku vs Pengwin GO!

Two symbols. One answer. No guessing, ever. Twindoku is a pure logic puzzle. Fill each square of the grid with a sun or a moon until the board satisfies every rule the level lists. Every rule in play is printed above the board, so nothing is hidden and nothing is left to luck. ONE ANSWER, ALWAYS REACHABLE Each level has exactly one valid solution, and at any point in a solve there is at least one square you can prove from the rules in front of you. You never guess, and you never have to undo a wrong branch. The cells that come pre-filled are your starting foothold. THE BASICS TAKE TWO TAPS Tap an empty square and a picker opens right where you tapped; choose a sun or a moon, tap again to switch. - Balance: each row and column holds the same number of suns and moons -- 3 and 3 on a 6x6 grid, 4 and 4 on 8x8. - No three in a row: never three of the same symbol side by side, across or down. Diagonals do not count. THEN THE RULES START STACKING From level 3 on, every puzzle adds one or two more rules over the basics: - Equal and cross markers: two neighboring cells that must match, or must be opposite. - Color regions: each colored area needs its suns and moons balanced too. - Blocked cells: cannot be filled, do not count for their row or column, and break up a run. - Edge numbers: which cell holds the first sun of that row or column. - Junction numbers: how many suns sit in the 2x2 block around the number. A 0 or a 4 decides four cells at once. - Boards that are not square: diamonds, fat crosses, hearts, bow ties, octagons, window frames. Outside the outline is background -- untappable, uncounted. HINTS THAT TEACH The hint tool finds a square that can be proven right now, highlights it, and explains the deduction -- which rule, and what on the board makes it certain. You read the reasoning, then press Apply. You keep the technique. MISTAKES ARE NOT THE END Three hearts per level. A wrong symbol costs one heart and names the rule it broke. Out of hearts, revive to get them back with your last move undone, or restart the level clean. There is no dead end, so you can stay with a grid until it cracks. GOOD FIT IF YOU LIKE Sudoku, Binairo, Takuzu, Binoxxo, binary puzzles, Nonogram, Kakuro, or any brain teaser you finish by reasoning instead of luck. Fill every square, satisfy every rule, and the board solves itself.

Pengwin GO! is a sudoku-style logic puzzle with three rules. Here they are first: - one penguin per color - one penguin per row, and one per column - no two penguins next to each other — corners included That's all of it. The rest you work out yourself. The board comes already divided into color patches. Seat your penguins until all three rules hold. When a square can't work, tap it and leave a mark. Every answer you rule out narrows what's left, and each board has exactly one solution. TWO PENGUINS, ONE BEACH The first is the original penguin: round, unhurried, unbothered by what anyone thinks, doing his own small stubborn thing. The second is the elegant penguin, in detective styling — hat, magnifying glass, certain the clue is always in the grid. Ice and sand both suit them. They play Pengwin GO! either way. Grids start at 4x4 and go up to 12x12. A fresh board lands every night at midnight — play it or don't. Stuck? A hint nudges without giving the answer. Airplane mode works: tunnels, flights, basements. Nothing interrupts a board in progress. Free. No account. One hand. The first board explains itself in about ten seconds.