| http://www.w3.org/ns/prov#value | - It , at 112 pages, contains 182 puzzles falling into the following solving levels: 66 Easys, 66 Mediums, 42 Hards, and 8 Challengers, including 2 with a 16 x 16 grid, which have run under the name Number Place Challenger in Dell's other titles. 6 issues in a year.
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