Loopy Logic Problems and Other Puzzles (Dover Recreational Math) by Moscovich,

Challenging Math Problems (Dover Math Games & Puzzles)

Puzzles in Math and Logic (Dover Recreational Math)

The Lady or the Tiger?: and Other Logic Puzzles (Dover Recreational Math)

Loopy Logic Problems and Other Puzzles (Dover Recreational Math) by Moscovich

Loopy Logic Problems & Other Puzzles Mastermind Collection by Ivan Moscovich NEW

The Lady or the Tiger?: and Other Logic Puzzles (Dover Recreational Math) by Sm