Current Trade-In Status - 12/5/2024: We have made some progress, but spaces for drop-off are filling quickly.
Please call the store BEFORE bringing boxes or bags. If we are low on space, we may ask you to wait.
Bear in mind, that the last 2 weeks  of December, we pause on taking in more material for end-of-year inventory.

Math & Logic Puzzles

Math & Logic Puzzles

  • How Do You Walk on Fire?: And Other Puzzles: 101 Weird, Wonderful and Wacky Puzzles with Science front cover by Erwin Brecher, ISBN: 1847325289

    How Do You Walk on Fire?: And Other Puzzles: 101 Weird, Wonderful and Wacky Puzzles with Science [457853]

    Retail Price $13.95
    Firefly Price $4.99
    This item is Used and is listed as being in Very Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $13.95
    Firefly Price $4.99
  • How Do You Get an Egg Into a Bottle?: And Other Puzzles front cover by Erwin Brecher,Mike Gerrard, ISBN: 1847325270

    How Do You Get an Egg Into a Bottle?: And Other Puzzles [457852]

    Retail Price $13.95
    Firefly Price $4.99
    This item is Used and is listed as being in Very Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $13.95
    Firefly Price $4.99
  • Lateral Thinking Puzzles: More Than 100 Brainteasers to Solve with Logical Reasoning front cover by Erwin Brecher, ISBN: 1847325440

    Lateral Thinking Puzzles: More Than 100 Brainteasers to Solve with Logical Reasoning [457830]

    Retail Price $11.95
    Firefly Price $4.99
    This item is Used and is listed as being in Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $11.95
    Firefly Price $4.99
  • Lateral Thinking Posers: More Than 100 Brainteasers to Solve with Logical Reasoning front cover by Erwin Brecher, ISBN: 1847325432

    Lateral Thinking Posers: More Than 100 Brainteasers to Solve with Logical Reasoning [457829]

    Retail Price $11.95
    Firefly Price $4.99
    This item is Used and is listed as being in Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $11.95
    Firefly Price $4.99
  • Tricky Mindtrap Puzzles: Challenge the Way You Think & See front cover by Detective Shadow, ISBN: 0806944889

    Tricky Mindtrap Puzzles: Challenge the Way You Think & See [457822]

    Retail Price $6.95
    Firefly Price $3.50
    This item is Used and is listed as being in Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $6.95
    Firefly Price $3.50
  • Brain Games - Find the Cat Challenge: Search for a Hidden Cat in More Than 125 Pictures! (Brain Games - Picture Puzzles) front cover by Publications International Ltd.,Brain Games, ISBN: 1645581543

    Brain Games - Find the Cat Challenge: Search for a Hidden Cat in More Than 125 Pictures! (Brain Games - Picture Puzzles) [441933]

    Retail Price $12.98
    Firefly Price $6.50
    This item is Used and is listed as being in Very Good condition. Front and back covers have light edge and corner wear. Spine intact with no creasing or warping. Binding is tight and intact, pages clean and unmarked. Cover image may be sourced as stock...
    Retail Price $12.98
    Firefly Price $6.50
  • 263 Brain Busters: Just How Smart are You, Anyway? (Novels Series) front cover by Louis Phillips, ISBN: 0140318755

    263 Brain Busters: Just How Smart are You, Anyway? (Novels Series) [399007]

    Retail Price $5.99
    Firefly Price $2.99
    This item is Used and is listed as being in Very Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $5.99
    Firefly Price $2.99
  • World's Most Baffling Puzzles front cover by Charles Barry Townsend, ISBN: 0806958332

    World's Most Baffling Puzzles [396871]

    Retail Price $5.95
    Firefly Price $2.99
    This item is Used and is listed as being in Very Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $5.95
    Firefly Price $2.99
  • World's Most Perplexing Puzzles front cover by Charles Barry Townsend, ISBN: 0806912677

    World's Most Perplexing Puzzles [396862]

    Firefly Price $3.99
    This item is Used and is listed as being in Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Firefly Price $3.99
  • Logic Puzzles front cover by Mark Fowler, ISBN: 0746007337

    Logic Puzzles [396861]

    Retail Price $7.95
    Firefly Price $3.99
    This item is Used and is listed as being in Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $7.95
    Firefly Price $3.99
  • Star Battle Puzzles front cover by Jim Bumgardner, ISBN: 1454943661

    Star Battle Puzzles [392930]

    Retail Price $9.99
    Firefly Price $5.99
    This item is Used and is listed as being in Very Good condition. Front and back covers have very light edge and corner wear. Spine intact with no creasing or warping. Binding is tight and intact, pages clean and unmarked. Cover image may be sourced as...
    Retail Price $9.99
    Firefly Price $5.99
  • Quicksolve Whodunit Puzzles: Challenging Mini-Mysteries front cover by Jim Sukach, ISBN: 080690884X

    Quicksolve Whodunit Puzzles: Challenging Mini-Mysteries [392813]

    Retail Price $6.95
    Firefly Price $2.99
    This item is Used and is listed as being in Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $6.95
    Firefly Price $2.99
  • The 125 Best Brain Teasers of All Time: A Mind-Blowing Challenge of Math, Logic, and Wordplay front cover by Marcel Danesi Ph.D, ISBN: 1641520086

    The 125 Best Brain Teasers of All Time: A Mind-Blowing Challenge of Math, Logic, and Wordplay [391742]

    Retail Price $12.99
    Firefly Price $6.50
    This item is Used and is listed as being in Very Good condition. Front and back covers have very light edge and corner wear. Spine intact with no creasing or warping. Binding is tight and intact, pages clean and unmarked. Cover image may be sourced as...
    Retail Price $12.99
    Firefly Price $6.50
  • Brain Bafflers front cover by Robert Steinwachs, ISBN: 0806987871

    Brain Bafflers [383790]

    Retail Price $6.95
    Firefly Price $3.50
    This item is Used and is listed as being in Good condition. Cover image may be sourced as stock images from OpenLibrary.org and may not represent the actual item or cover art. If you need images of this specific item, please contact us. Firefly SKU:...
    Retail Price $6.95
    Firefly Price $3.50
  • More Puzzlegrams front cover by Pentagram, ISBN: 0671510592

    More Puzzlegrams [370765]

    Retail Price $18.00
    Firefly Price $5.99
    This item is Used and is listed as being in Good condition. Front and back covers have wear to edges and corners. Spine intact, some wear. Binding is intact. Pages are generally clean with edge or corner wear. Cover image may be sourced as stock images...
    Retail Price $18.00
    Firefly Price $5.99
  • Baker Street Puzzles front cover by Tom Bullimore, ISBN: 0806908564

    Baker Street Puzzles [369768]

    Retail Price $7.95
    Firefly Price $3.99
    This item is Used and is listed as being in Very Good condition. Front and back covers have very slight edge and corner wear. Spine intact with no creasing or warping. Binding is tight and intact, pages clean and unmarked. Cover image may be sourced as...
    Retail Price $7.95
    Firefly Price $3.99
  • Baker Street Whodunits: Puzzles of Deduction front cover by Tom Bullimore, ISBN: 0806947632

    Baker Street Whodunits: Puzzles of Deduction [369717]

    Retail Price $6.95
    Firefly Price $3.50
    This item is Used and is listed as being in Very Good condition. Front and back covers have very slight edge and corner wear. Spine intact with no creasing or warping. Binding is tight and intact, pages clean and unmarked. Cover image may be sourced as...
    Retail Price $6.95
    Firefly Price $3.50