Second-Degree Black Belt Sudoku® by Frank Longo

Second-Degree Black Belt Sudoku®

Frank Longo

192 pages first pub 2005 (editions)

dark mysterious reflective medium-paced
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Description

Created in the United States, these addictive conundrums were originally called "Number Place" puzzles until their recent rise in popularity in Japan, where the name translated as sudoku. However, in a true sudoku, unlike a "Number Place" puzzle,...

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