Crystal Math vs Ishido

Crystal Math brings brain training to a whole new level. No matter if against the clock, or against other math cracks, improve your mental arithmetic on a daily basis, unlock all achievements one by one and become the new math champion. Test you math skills in four challenging modes. Daily Challenge: Solve a new challenge every day and fight for a spot on the highscore list in three difficulties. Step up your game though, you only get one try! Duel: Challenge other players to a duel, or accept someone's challenge and fight for the winnig time. Time Attack: Practice under competition conditions. You have 30 seconds to solve the challenge. Free Game: Explore the game free of pressure and find your personal techniques for upcoming challenges. Choose an avatar and show math cracks around the globe what you are capable of. What are you waiting for? Pick up your slide rule and get started!

WELCOME TO ISHIDO An ancient puzzle that will test your meditative and strategic powers. Balance the yin & yang of patience vs. the quick score. Your goal is to empty the pouch, but plan ahead to find the elusive 4-way. You must match 72 stones on a board of 96 squares. You can play for points or relax and meditate over each move. OVERVIEW Ishido is a board game where you attempt to match stones according to their colors and patterns. THE GAME BOARD * The Game Board is eight squares high by 12 squares wide. * Stones come in sets of 72 stones. Each stone has two attributes: A color and a symbol. There are six symbols and six colors in each stoneset, thus creating 36 unique stones. Each stone comes in a pair, hence 72 stones in each stoneset. * The Within consists of the interior squares. * The Beyond consists of the squares at the outer edges of the board. * The Touchstone displays the next stone to be played. * The Scoreboard shows both the number of points scored, and the number of combination matches achieved. * The Pouch shows the number of stones remaining to play.