Helpmate Puzzles vs Asteroid Hazard

Helpmate puzzles are a fun variation of regular chess puzzles! The twist is that both sides cooperate in order to checkmate black. The puzzles are challenging and addicting! This app is loaded with over 1300 puzzles from simple 1 movers all the way up to very challenging 4.5 movers in half move increments. For even more chess puzzle challenges check out these apps: - Mate in 1 Puzzles - Mate in 2 Puzzles - Mate in 3 Puzzles - Mate in 4+ Puzzles

Asteroid Hazard is a space strategy game based on real orbital mechanics. Asteroids, comets, and interstellar objects are hurtling toward Earth. You have launch vehicles, interceptors equipped with optical guidance systems, and time — but not much of it. What sets this game apart from the rest: → Real Keplerian orbits. Every trajectory follows Newton’s laws. → The real Solar System—from Mercury to Neptune. → Optical guidance locks onto the target and corrects the interceptor’s course—just like in real interplanetary space missions. → Three classes of threats: asteroids, comets, and interstellar objects—each with its own orbital patterns and interception difficulty. → Upgrade system: interceptor launch frequency, intercept speed and range, optical tracking system improvements, number of simultaneously launched spacecraft, and threat detection system enhancements. → Cross-platform leaderboard: compete with friends and dangerous asteroid hunters around the world This isn’t a toy solar system. It’s a simulation created by a scientist who has discovered 6 comets and over 500 asteroids, including those approaching Earth. Can you defend the planet?