Gordon R Burgin 150+ Challenging Numeric & Logic Puzzles (Paperback) (UK IMPORT)

150+ Challenging Numeric & Logic Puzzles (Paperback or Softback)

Challenging Logic Puzzles - Paperback By Clarke, Barry R - GOOD

Will Shortz Presents Ferocious KenKen: 200 Challenging Logic Puzzles That Make Y

Challenging Logic Puzzles - Paperback By Clarke, Barry R - VERY GOOD

150+ Challenging Numeric & Logic Puzzles by Gordon R. Burgin (English) Paperback

150+ Challenging Numeric & Logic Puz... by Burgin, Gordon R Paperback / softback

Challenging Logic Puzzles Barry R. Clarke Paperback Sterling MENSA Illustrated