Islands Hashi vs Chessdoku

Hashi is the bridge-building logic puzzle also known as Hashiwokakero — pure deduction, no luck, no clutter. Draw bridges between numbered islands until the whole map connects into one network. Simple to learn, deeply satisfying to master. A grid of numbered islands floats on a quiet sea. The number on each island tells you exactly how many bridges must touch it. Connect them all so that every island is linked into a single network — with no crossing bridges and no diagonals. Every puzzle has one logical solution, and you can always reason your way to it. HOW TO PLAY • Drag from an island to build a bridge; drag again for a double. • Tap a bridge to remove it. • Each island's number = the bridges touching it. • Bridges run straight, never cross, never go diagonal. • Win when every island connects into one group. A WORLD OF ISLANDS Sail through 44 real-world archipelagos — the Florida Keys, the Hawaiian Islands, the Aegean, the Galápagos, the Faroes, the Whitsundays, Raja Ampat, Svalbard and more — each with its own handcrafted puzzles and a few words about the place. PUZZLES WITH A SHAPE Fifteen Shapes collections cut the board into a silhouette — a heart, a star, an anchor, a boat, a key, a crescent, a wave. The same rules, with a picture waiting at the end. TEN EXTREME SEAS For seasoned solvers: 500 puzzles where every board needs genuine deduction — thinking a few bridges ahead — with each pack climbing steadily to the hardest boards in the game. A NEW PUZZLE EVERY DAY The Daily gives you one fresh challenge every day. Sign in to climb the daily, weekly and all-time leaderboards and see how you stack up against players worldwide. PLAY ALONGSIDE FRIENDS React to anyone's score with an emoji, follow the players you are chasing, and get a nudge when someone passes you. BUILT TO BE CALM • Smooth, forgiving drag controls with full undo, redo and reset. • Zoom and pan freely on larger boards. • Gentle coaching that explains why a move doesn't work — so you learn, not just lose. • Hints when you want one: each hint places one provably-correct bridge. • Light and dark themes, beautiful typography, no noise. • An optional daily reminder, at the hour you choose — never a nag. RELAX AND THINK No timers forcing you, no penalties for experimenting. Whether you have two minutes or twenty, Hashi is a quiet place to think. Perfect for a coffee break, a commute, or winding down at night. Free to play, with ads. Two optional in-app purchases: a bundle of keys that unlock extra island groups and buy hints, or Hashi Complete — a single purchase that removes the ads and opens every archipelago and Shapes collection for good. An optional account adds cloud leaderboards. Build your bridges. Connect every island.

Place the given chess pieces so every row and column holds exactly one piece — and no piece threatens another. That's Chessdoku: the discipline of Sudoku, the geometry of chess. NO GUESSING, EVER Every puzzle is generated by a built-in deduction engine and verified solvable by pure logic. Stuck? The hint doesn't just drop a piece — it explains the deduction you could have made. FIVE WAYS TO PLAY - Classic — open square boards, from a gentle 4×4 to the deep end - Panorama — wide boards that bend your instincts - Fortress — frozen pawn walls cut the lines, so extra pieces fit - Command — you place the pawns, and your pieces need them - Torus — borderless boards where attacks wrap around the edges 300 levels in each mode — 1,500 puzzles in all. EVERY DAY, ONE PUZZLE A daily challenge seeded from the date, identical for every player on Earth. Keep your streak alive and share your result, spoiler-free. THINK WITH YOUR HANDS Cross off dead squares with the X tool, pencil-mark individual piece options Sudoku-style, long-press any piece to see exactly what it attacks, and let the app prove it the moment a position becomes unwinnable. FREE TO PLAY The daily challenge, the tutorial, and a generous run of free levels — including the first 100 in Classic — are free to everyone. One optional purchase unlocks all 1,500 levels and every Quick Play preset — no subscription, ever. YOURS, OFFLINE No account. No ads. No tracking. Puzzles are generated on your device and your progress never leaves it. Seventeen handcrafted board themes, including a colorblind-friendly high-contrast set.