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From Bogumila Gierus:
HEXA-TREX is a puzzle of mathematical aptitude that is fun for both kids and adults. This seemingly simple game soon becomes a search through complex pathways to find the right math equation. Scroll with your finger on the tiles to see if you can create the right equation. Ask for a hint, and the starting position will be provided. You can also use the calculator function to do the arithmetic for you.Testing your ability to search out patterns as well as basic math, this fun and challenging puzzle game will entertain you and your friends for hours to come. How to Play: Find an equation pathway that winds through all the tiles.Forming Equations:1. Two or three (or four or five etc.) digit numbers are made up of the individual tiles in the particular order as the equation is read. For example 5 x 5 = 2 5 is correct, but read backwards 5 2 = 5 x 5 is incorrect.2. The equation must be continuous (no jumping over tiles or empty spaces).3. Each tile can be used ONLY ONCE.4. Order of operations is followed. (Multiplication and division comes before addition and subtraction)5. The tile - can be used as both a subtraction operation or a negative sign in front of a digit, making it a negative number.