The Cast Devil and Harmony Puzzles

This week I cover two puzzles, to demonstrate a common solution tactic.

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The Cast Devil and Cast Harmony Puzzles are both available in a variety of places, but here is one:


I'm a Top-10 finisher in the US Puzzle Championship and just released a logic puzzle game on Steam! The game is called RYB:

Intro song: Tekvision - Mycoplasma
Intro template: /SDJGRedstoneDJ

Views: 117499
Runtime: 3:3
Comments: 102

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Author Emaly Rodriguez ( ago)
I have the cast devil when I was 3 my parents taught me to solve it and then showed their friends who were like how?

Author Klein Antonio ( ago)
Hey did you just get engaged?

Author CLAIRE sellnow ( ago)
My dad was able to solve the cast devil in about 15 minuets

Author CrazyKid 52 ( ago)
I love this because I'm a musician and I love puzzles :D

Author joannaz ( ago)
My math teacher used to call these kinds of puzzles, "tavern puzzles" :D

Author David's Favorite Videos ( ago)
Not a 'Happy hacking' this time?

Author Establishment ( ago)
i have the cast devil!!

Author GingerBreadSed ( ago)
I got the Cast Devil with a set of 6 similar puzzles! The first time I solved it was while absentmindedly pushing the pieces around since I couldn't find the solution for so long 😅 Love the feel of it!

Author Juanito Macho Protegido ( ago)
These are the only puzzles you presented I was able to solve haha

Author Parpy ( ago)
the cast devil is really easy once u know the trick! i have one too

Author that_guy_in_a_bowtie ( ago)
My dad bought me the cast devil on a road trip around Australia. He said that if i could figure it out by the time we got to townsville, he would get me an ice cream. Kept me thinking for a while, but i figured it out pretty quickly! very fun!

Author dried nut ( ago)
i have the cast devil somewhere... it was fun to solve when i was a kiddo.

Author Cup of Saltyness ( ago)
I have the cast devil one and few more

Author Hays Dixon ( ago)
These puzzles are very beautiful in look, which I enjoy.

Author reezdog ( ago)
I found three of these at the Dollar Store. they are fun. I got two other wooden ones but can't put one of them back together. way to hard.

Author Oiiioi ( ago)
I had a Cast Devil puzzle as a kid... I may have tried to force it the wrong way so many times it became permanently warped...

Author Extys ( ago)
I feel very clever when I find the solution in the first look. :^)

Author Dana Ondráčková ( ago)
It looks so easy! Yet I would rather break it after many tries :D once I was playing with the "hedhehog in the cage" and not knowig it was a puzzle (I was a kid) I somehow managed to take it out of its cage and I run to my family crying that I broke it :D

Author Sean Le ( ago)
i want to give that cast harmony puzzle to my band instructor

Author John Doe ( ago)
my father brought me 'the cast devil' when I was 13... i solved it but i didnt know how, until now.. 9 years later lol, im glad i saw this and know its name..

Author *DJ-* *PonG* ( ago)
I solved the cast devil by just flinging it around because i want bored lol

Author PiggyMC ( ago)
my classmate had a cast devil and brought it to school, she gave it to some friends and they couldn't beat it.... then she gave it to me and i did it in like 10 seconds....

Author Chase Theodorides ( ago)
Omg I did those in 8th grade so easy :P

Author Riiko Karppinen ( ago)
i have the cast devil i did in like 10 mins

Author Bartosz Olszewski ( ago)
I just hate the smell that metal leaves on your fingers after you fiddle too long with these puzzles

Author Adrian ( ago)
I solved a miniature devil one when i was 6(i at least hope it was the same)

Author vcblueworld123 ( ago)
You did good did good.

Author Mindboggler123 ( ago)
I was able to figure out that harmony puzzle just by looking at it, not the devil one though

Author JettFox ( ago)

Author JettFox ( ago)
Legend has it, if you're a musician, he will pin AND favorite your comment!

Author dpkeys ( ago)
The music one is just like when my keys get all tangled up.

Author Nagem1617 ( ago)
I have the harmony one. I got it because it was music notes lol. figured it out pretty quickly

Author clasherultimate1603 ( ago)
How is this channel not subbed more? Awesome stuff. Keep going. Subscribed.

Author Keiran Wilmot ( ago)
You should play your "spoiler break" at the start of your video because it is really just your intro

Author Alex B ( ago)
It's so weird that he basically just announces his intro in his videos, as if it were some sponsored advertisement. And in like the very middle of the video.

Author Alex B ( ago)
It's so weird that he basically just announces his intro in his videos, as if it were some sponsored advertisement. And in like the very middle of the video. 😬😂

Author Alex B ( ago)
It's so weird that he basically just announces his intro in his videos, as if it were some sponsored advertisement. And in like the very middle of the video. 😬😂

Author Russell Profant ( ago)
There is this really cool twisted nail puzzle plz review it I will link a pic

Author Two Duy ( ago)
Is there any puzzles that beginners should start with?

Author Henji96 ( ago)
Wow they were both very easy. Glad the solution I had imagined in my head was the real solution for both puzzles.

Author Jonah Matthews ( ago)
i love these videos so much. he is so passionate about the puzzles that it makes it really entertaining

Author Jordan Whittle ( ago)
do you have any more like the "xbox puzzle"?

Author JPK314 ( ago)
Heyyy, I actually have both of these :D

Author Utsuro Hako ( ago)
Feel like the Japanese are the best at these puzzle making

Author Dragon Fox ( ago)
No offense but duhhh

Author Michael White ( ago)
really enjoy your videos Fleb!

Author Numnum ( ago)
Solved them both in my head immediately

Author TheNintendoFan37 ( ago)
I always look forward to your videos!

Author Trailer Park Mom ( ago)
Scott k are you there. I am back

Author DJ Scribbles ( ago)
I love puzzles

Author GOLD 1515 ( ago)
I only have the enigma puzzle since Christmas and I haven't solved it yet. :(

Author Nexxscorn ( ago)
I love this channel.

Author Pedro Scoponi ( ago)
So elegant, both in shape and solution! I like it :D

Author Manzanella ( ago)
these videos always make me smile :)

Author thenewgoddamngambit ( ago)
Oh right! I now remember i subbed to this channel a few months ago!

Author dreadpiratekiel ( ago)
nice to see you cover one I actually own. the got the devil one some time ago and it has been one of my favorite for it's deceptive simplicity. cool to learn a little of its history as well. love the channel, keep up the good work.

Author constantin craciun ( ago)
Ok. I really love your videos and I would like to see more. Saw one of your videos on reddit. Thank you.
Btw FLEB is not your real name right? :)

Author Jason M ( ago)
You should do a collab with Oskar van deventer, maybe even create a puzzle together

Author pipo plus ( ago)

Author PompeyDB ( ago)
Another brilliant puzzle. Thank you.

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