Diabolically Hard Fireball Crosswords: 45 Ultra-Tough Puzzles
Product Type: Bargain Books
List price: $6.95
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Solvers in search of devilishly hard crosswords will find the ultimate challenge in these 45 diabolical puzzles! Some are themed, some not--and others up the ante with metapuzzles: puzzles within puzzles designed to stump even ultrafans.