CRYPTOGRAMS TO KEEP YOU SHARP(English, Paperback, unknown)
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Exercise your brain while you uncover some pithy food for thought. Cryptograms are substitution codes - every letter in the code has been replaced by some other letter; you try to find which letters stand for which others. Every cryptogram has a different substitution system. Some hints: start with the shortest words. Break down long words into prefixes or suffixes. Look for words containing an apostrophe. A chart gives you hints for three letters in each puzzle. The more you solve, the better you get.