Chessdoku vs Arrow Loop

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.

Sharpen your logic in quiet focus. One loop. A handful of black cells. That's the whole rule— yet the deeper you look, the clearer your mind becomes. Guided by arrow-and-number clues, link every empty cell into a single closed loop, and shade exactly as many black cells as each arrow points to. That's Arrow Loop. No server, no account—everything stays on your device. WHAT YOU GET - A loop-and-shade logic puzzle: draw the path, shade the cells—two tactile modes - Always one solution: a solver verifies uniqueness as each board is built - Four difficulty tiers: from a gentle 6×6 to a fierce 12×12 - Today's puzzle: seeded by the date, the same board for everyone, worldwide - Two input modes: drag to draw the loop, tap to shade—simple and direct - Gentle assists: toggle mistake-highlighting, or take a quiet hint - Records & streaks: solves, average time, and daily streaks, shown calmly - Fully offline: play anywhere, no signal needed - English & Japanese, in a calm, paper-and-ink look MADE FOR YOU IF - You want to turn a few spare minutes into quiet, focused thinking - You love Slitherlink, Nurikabe, or nonograms - You're tired of ad-heavy, account-required puzzle apps - You care about the satisfying click of a single, certain answer - You want a small pre-sleep ritual with no notifications chasing you