Number Spy vs CT Lite+

Number Spy – The Ultimate Number Hunt Begins! Ready for a brain-teasing challenge that’s as fun as it is addictive? Number Spy reinvents the classic "Hot or Cold" game with a thrilling twist—hunt down a mystery number between 1 and 999 before your opponent does! Whether you’re facing off against a friend over WiFi or outsmarting a crafty computer opponent, every guess brings you closer to victory—or defeat. How It Works: - Spin the number wheels and make your guess. - Watch the clues light up: Purple (Cold) for way off, Red (Ouch!) for oh-so-close, and everything in between. - Follow the Hint Arrows (Up or Down) to zero in on the target. - Strike the Mystery Number first and claim your win! Why You’ll Love It: - Solo Mode: Test your skills against a computer opponent—choose Average for a casual duel, Smart for a real challenge, or Peeking for a nail-biting race. - WiFi Mode: Challenge a friend and see who’s the ultimate Number Spy. Sync up, set your avatars, and let the showdown begin! - Custom Fun: Pick your avatar, set the number of games per match (1-10), and tweak the odds to keep it exciting for everyone. - Secret Edge: Parents, hold the Cold (Blue) indicator for 2 seconds to sneak a peek at the Mystery Number—perfect for guiding younger players! Quick to Learn, Tough to Master: With colorful Range Indicators and clever opponents that adapt, every round is a fresh thrill. Will you outguess the competition with strategy, or rely on luck to steal the win? Download Number Spy Now! Grab it free from your app store. Get ready to hunt, guess, and triumph—your next obsession starts here!

Puzzle helps to learn Cartesian coordinate system (x,y) and practice to calculate sums over the line (the very first step to understanding integration). Sound: switch Ring/Silent controls speaker. After 30 seconds quick shake to restart the puzzle or reveal the answer with just a tap. In Gradients puzzle each cell has a value that contributes to the sum when calculated along a row or a column. Additionally, the value of each cell depends on the direction of the summation ("anisotropic field"). Sometimes, the clues can be satisfied by different pattern of orange cells. This means that, without additional information, solving the puzzle may involve a guessing step. An interesting phenomenon is the formation of "isomers", where an alternative solutions can be created by inverting a subset of cells. When playing for fun, any of the isomers is considered a valid solution. However in Competition mode, one more clue is added: a sum along the main diagonal. This additional clue helps distinguish between isomers.