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Plus One Puzzle

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Project by mtairymd posted 02-01-2018 09:39 PM 1066 views 8 times favorited 8 comments Add to Favorites Watch

This is one of my favorite puzzles so far. You are given 8 blocks that must be placed in a box. They will fit and the box will be “totally filled.” Once you are done, slide the lid on the top to complete the puzzle. Your test subjects might feel pretty smart by knowing that they solved this puzzle within a few minutes. However, you have a surprise. Pull the extra piece from the lid and tell them to place it in the box. I’ve tested this puzzle with 20 people so far and the common response is “No Way!”. But yep, it can be done.

Build Instructions:
https://www.instructables.com/id/Plus-One-Puzzle/

This video shows the solution but doesn’t answer the why. Do you see a difference?
https://youtu.be/D8V0wRFAoz8





8 comments so far

View helluvawreck's profile

helluvawreck

32083 posts in 3010 days


#1 posted 02-01-2018 10:43 PM

This is a very creative puzzle.

helluvawreck aka Charles
http://woodworkingexpo.wordpress.com

-- helluvawreck aka Charles, http://woodworkingexpo.wordpress.com

View mut's profile

mut

14 posts in 345 days


#2 posted 02-01-2018 10:56 PM

Nice job – well explained and illustrated! Thanks

View mtairymd's profile

mtairymd

242 posts in 1523 days


#3 posted 02-01-2018 11:04 PM

Thank you. As I said in the write up – I spent way more time than I would like to admit working out the dimensions for this version and additional hours in the workshop trying to get the blocks to be within tolerance (hand sanding).


Nice job – well explained and illustrated! Thanks

- mut


View mtairymd's profile

mtairymd

242 posts in 1523 days


#4 posted 02-01-2018 11:04 PM

Thanks


This is a very creative puzzle.

helluvawreck aka Charles
http://woodworkingexpo.wordpress.com

- helluvawreck


View KelSnake's profile

KelSnake

234 posts in 1465 days


#5 posted 02-05-2018 07:26 PM

Fantastic, I love the puzzles!

-- Kel Snake, ~ Mystery By Design ~ http://www.woodlockplans.ca

View mtairymd's profile

mtairymd

242 posts in 1523 days


#6 posted 02-05-2018 10:25 PM



Fantastic, I love the puzzles!

- KelSnake

Thanks…it is a fun puzzle

View Grumpy's profile

Grumpy

24379 posts in 3994 days


#7 posted 02-14-2018 10:06 PM

Nice job and congratulations on your ‘Daily Top 3’ award.

-- Grumpy - "Always look on the bright side of life"- Monty Python

View mtairymd's profile

mtairymd

242 posts in 1523 days


#8 posted 02-14-2018 10:34 PM

Thank you!


Nice job and congratulations on your Daily Top 3 award.

- Grumpy


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