Cross Out vs Induction

Welcome to Cross Out: Logic Puzzle Game — One Mark, One Solution, Infinite Deduction. No guessing, no luck — just pure logic. Cross Out is a deduction puzzle built on one elegant rule: place exactly one X in every row, every column, and every colored region — and never let two X's touch. Every board hides a single valid solution, and it's yours to uncover one careful mark at a time. Your mission: read the colored regions, rule out the impossible, and place your X's until every row, column, and region holds exactly one — with none of them touching, not even at the corners. Tap to leave a note, tap again to commit your X, and let the grid guide you to the only answer. Can you find the one solution hiding in over 9 quintillion puzzles? Key Features The Satisfaction of the Perfect Deduction Feel the click of the final X dropping into place and the whole grid locking into solved. No trial-and-error needed — every move follows from logic, and every solved board is earned. 9 Quintillion Unique Challenges The journey literally never ends. From breezy 5×5 grids to dense 10×10 boards packed with colored regions and blocks, the engine generates unique, guaranteed single-solution puzzles that scale with your skill. You'll never solve the same board twice. Clean, Focused Design A calm, distraction-free grid built for deep thinking. Crisp colored regions, clean black X's, no clutter — a modern aesthetic designed for clarity and focus. Master Every Constraint As you climb, the grids fight back. Blocked cells rule out squares entirely, locked clue X's anchor your opening, and the no-touch rule keeps you honest. Every region and every neighbor changes where your next X can go. Smart Solver Hints Lost the thread? The built-in hint doesn't just reveal a square — it points to the next move logic demands, flagging a wrong X to remove or the very cell that's forced. Effortless Marking Drop an X where one already sits in that row, column, or region and the old one simply moves to your new cell. Think out loud on the board — no manual cleanup, ever. Reach the Unreachable How far can your logic carry you? From Level 1 to the 64-bit integer limit — 9,223,372,036,854,775,807 levels — your journey is effectively infinite. Global Leaderboards Climb the ranks worldwide and prove your deduction is the sharpest on the board. Gameplay Highlights: • Pure logic: a fresh take on Star Battle and region-based deduction puzzles. • One-solution guarantee: every board has exactly one valid answer. • No timers, no clocks: just you and the next deduction. • Brain training: sharpens logic, pattern-spotting, and elimination. • Play offline: a lifetime of puzzles, right in your pocket. The grid is set. The solution is waiting. Every X follows from the last. Download Cross Out today and rule out the rest.

Somewhere inside the box, lodestones are hiding. You can't see them. You can only fire probes into the machine and watch what comes out. A beam that flies straight through? Nothing in its path. A beam that never comes out? A direct hit. A beam that exits somewhere unexpected? Now you're getting somewhere. Every deflection is a clue! Induction is a pure logic deduction game in the tradition of the classic Black Box puzzle: a hidden grid, a limited set of probes, and everything solvable by reasoning alone. No luck, no timers, no move-matching. If you love Minesweeper, nonograms, or picross-style deduction, this is that same "aha!" — with beams. HOW IT PLAYS • Fire probes into the edges of a hidden grid • Read the results: hits, deflections, reflections, pass-throughs • Mark your deductions in the grid until you're certain • Seal your answer. Clean solves and streaks are tracked. WHAT'S INSIDE • Over 1,000 hand-tuned puzzles across notebook collections, from gentle on-ramp to expert codex • A new Daily Challenge every day. The same puzzle for everyone, and streaks to keep • A tutorial that teaches by demonstration, not walls of text • Beautiful vintage-laboratory notebook style PLAYS ANYWHERE • Fully playable offline (commutes, flights, dead zones) • No account required. Sign in with Google or Apple only if you want your progress backed up or synced across devices • Progress backup and cloud sync when signed in FAIR & FOCUSED • Free, supported by ads; rewarded ads are always your choice • No pay-to-win, no energy systems, no consumable nonsense • Your brain is the only power-up From Connexus Digital, the makers of Connexus Puzzles. Charge the coils. Fire the probe. Find what's hiding.