Black & White Go vs Numoku

Black & White Go — the strongest Go AI in your pocket. Powered by KataGo, the world's strongest open-source Go engine, built right into the app. Play and review games anytime, anywhere — fully offline. STRICTLY FAIR GAMES • 15 difficulty levels — from beginner to strong amateur • 9×9, 13×13 and 19×19 boards • Even games, nigiri, 2–9 stone handicap, free handicap placement • Pass, undo and resign supported • Games are saved automatically — resume anytime PLAY YOUR WAY • Play Black or White against the AI • Play face-to-face with a friend • Watch AI vs AI games and learn AI REVIEW — IMPROVE EVERY GAME • Full-game win-rate graph at a glance • Automatic mistake marking: blunder / mistake / inaccuracy • At every marked move, see the AI's recommended play on the board • Choose analysis depth (Fast / Standard / Thorough) — remembered for next time • Tap the graph to jump to any move, or step 10 moves at a time POSITION ANALYSIS • Estimate territory and influence while you play Available in Korean and English.

Numoku brings the satisfying feel of a physical wooden sliding puzzle with your fingers. Slide tiles with a natural swipe gesture, arrange numbers in order, and feel every move with real haptic feedback — just like holding the real toy in your hands. THE CLASSIC GAME The sliding puzzle (also known as the 15-puzzle or 24-puzzle) is one of the world's most beloved brain teasers. Numoku captures its tactile charm with a gorgeous wooden board design, smooth spring animations, and authentic sounds that make every slide feel real. SWIPE TO SLIDE — IT FEELS NATURAL Swipe any tile toward the empty space to move it. The tiles respond with spring physics, subtle drag feedback, and a satisfying "thunk" when they land. It feels exactly like pushing a real wooden tile. MULTIPLE GRID SIZES • 3×3 (8-puzzle) — Quick challenge, great for beginners • 4×4 (15-puzzle) — The classic, beloved worldwide • 5×5 (24-puzzle) — Expert level, deeply satisfying to solve BEAUTIFUL THEMES • Walnut, Maple, Bamboo, and Slate board themes • Numbers, Emoji, Animals, Letters, Dice Dots, and Color tiles • Every theme adapts the entire app — board, tiles, backgrounds, and the home screen SMART FEATURES • Hint system — highlights the next tile to move • Undo — step back any mistake • AI Solver — watch the A* algorithm solve any puzzle automatically • Ghost Tile — faint overlay shows where each tile belongs • Progress bar — see how close you are at a glance • Efficiency stars — 1-3 stars based on how close you were to the optimal solution EXCITING GAME MODES • Classic — solve at your own pace, no pressure • Timed — race against a countdown • Move Limit — solve within a set number of moves • Daily Challenge — one global puzzle per day, build your streak TRACK YOUR PROGRESS • Best scores per grid size and mode • Speed progression chart across your last 10 solves • Full game history with mode, theme, and date • Daily challenge calendar and streak counter FIRST-RUN TUTORIAL A friendly 5-page illustrated onboarding with live animated demos teaches you the swipe controls, game goal, hints, undo, and game modes — new players are playing confidently within 60 seconds.