Solitaire Card HD vs CT Lite+

Enjoy a complete collection of classic Solitaire card games in one fast and easy-to-use app. Whether you're a casual player or a Solitaire enthusiast, you'll find a variety of game modes to keep you entertained. Multiple Solitaire Games Choose from a wide selection of popular Solitaire variants, including: Baker's Game Easthaven Forty Thieves FreeCell FreeCell Two Decks Golf Klondike Klondike Two Deck Simple Simon Spider (One Suit) Spider (Two Suits) Spider (Four Suits) Each game follows its traditional rules, providing an authentic Solitaire experience. Customize Your Game Personalize the look of your game with: Multiple card backs Different card designs Custom backgrounds Smooth and Easy to Play Clean and intuitive interface Quick game switching Optimized for phones and tablets Relaxing gameplay for players of all skill levels Whether you want to enjoy the classic Klondike experience or challenge yourself with Spider, FreeCell, Forty Thieves, and more, this app has a Solitaire game for everyone.

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.