Not that you need yet ANOTHER play-through, but here is what I did: https://www.youtube.com/watch?v=oFg1-J9Z1Mw .
Seems to be a number of ways to reach key states...I wonder which path is most efficient? i suppose that depends on time or portal placement efficiency. Crazy!

OMG I finally got it. Very subtlely forced second loop . Incredible little layout

amazing puzzle. solved it in 3 tries over 1.5 hr. definitely a HUGE logic component but it's nice when you work it backwards. i kept the ball in the cube receptor so that it doesn't roll away. hope this was acceptable as some other comments mention, getting to the thumbnail situation is somewhat tricky in itself -- and as you get to that situation, you realize that the puzzle just started. thankfully no new mechanics are needed for the remainder half of the puzzle. really satisfying. although i think this is easier than 6/10? dunno.

@Mattchew Thanks a lot for playing! I'm glad you liked this oldie, and I agree with you that that part is the nicest surprise of the map. That angled panel is there for people who somehow were able to put the laser cube on the button skewed in such a way that it still hits the receiver. I kinda hate that I gave in to preventing something as dumb as this because it kinda ruins the aesthetic... Maybe some day this one deserves a remake...

An older map of yours, but such a fun shuffler. the way you weave in out of the separate areas is very fascinating. The re-use of the light-bridge was unexpected but so welcome. I am curious why there is an half-angled panel next to the cube button, doesn't seem to prevent anything so was for aesthetic? / Great work, faved!

@可砸 Thanks a lot for your videos, both for this map and various others! I'm very happy to hear that you enjoyed this one too, it still has a very special place in my heart

Excellent map,I enjoyed a lot! I believe creating it is more difficult than solving it.
https://youtu.be/Uw4IlU0AXUQ

@libdem @Towelie Clegane Thank you both so much for the very kind words

another puzzle with only 2 panels, my god..
you are incredible, these are so simple yet complex.
very fun to solve, please create more
this is a major source of entertainment

Was shocked for a solid second when the ball got respawned once i placed the cube! Would argue the difficulty is a bit lower for me due to one's options being extremely limited after one of the cubes being fixed into place. Love that the introduction of the light bridge was for the one purpose that became quite clear as one plays along. Overall good work!

@mabelpines I don't think it is necessary to do that to solve the puzzle...

Is it intended solution?? Roll the ball

@RotakeR Thank you for the kind words! Great work solving this one the proper way

Brilliant and elegant. Couldn't resist the urge to do some cube tossing at first, but I'm glad I decided to solve it normally after. Amazing puzzle.

@ForsacaZ Thank you! It's always more satisfying to work out the intended solution Great work sticking with it :D

(Sorry if my English was bad)

Hey! My previous (sorry if spelled wrong) comment was written because i was bored and wanted to cheese everything i can. Now i completed the intented solution and... I just want to say thanks. Thanks for creating this wonderful, interesting and fun map. This was one my one of the hardest and unforgetful puzzles of my life. I know, i may sound lying but i am not. I love this map!

@yeputons Thank you so much :D I'm very happy to hear that you enjoyed this puzzle, and excellent work solving it! This puzzle will always have a special place in my heart too

Holy moly! Pure logic indeed. I have no idea how you came up with this puzzle, my respect. No throws. No jumps. No ultra-precise portal placement, hidden panels, thin gaps, or special tricks that you don't know from the main campaign (maaaaaybe except the spoilered one later). No timing trickery at all; if you have to worry about sphere rolling away, you are either doing something wrong or don't know you can place sphere in a switch to keep it in place .

Everything is in plain sight: four corners, a center, only two walls for placing portals, three cube/sphere-issuing machines, a bunch of buttons, laser emitter, laser receiver. And, yes, the square button that activates the door also does something else that is (not) helpful at times.

Why this map isnt named "Throw simulator"?

making the exit button respawn the ball is hilarious

@Mikeastro Don't worry, this has happened with other maps before, plus I found that taking a break from a game is really refreshing and allows you to come back more motivated than ever.

@SpiderLucas15 Oh no! I'm very sorry to hear that my map made you quit the game for a while :[ Great work solving it in the end though!

I stopped playing Portal 2 for a while because I couldn't figure out the solution to this one, I was so frustrated. Now I've just come back to this map and the solution came out almost naturally, really clever and more straightforward than I thought. Very good map!

I'm not sure you're aware of this cheese but you can complete this without ever needing to use portals or any elements besides the laser cube, the ball, and the 2 buttons for the exit. You can just throw the cube over the water and then once it's on the button, throw the ball over two pools of water and then win.

Maybe I'm lucky. I think this puzzle goes well

My biggest challenge was figuring out which cube needed to be on the button attached to the exit. Once that was sorted out, it was pretty easy after that[/url]. Well done.

@Robothedgehog That's what I love about this puzzle :D

Got to the situation in the puzzle preview picture, feeling smart for beating it, only to realize the consequence of placing the cube on the button...

...Then the real puzzle began...

@secondtim1112 Thank you so much for playing! Excellent work solving this one; it's not easy at all. I hope you will continue to enjoy my puzzles :D
@Teo Thank you for the kind words! I am very curious to learn what your current top 3 looks like :P

Amazing puzzle and very elegant without requiring any crazy gimmick. Took a lot of steps and smart thinking for something in a relatively small straight forward looking room. Hardest puzzle I've done but very rewarding slowly figuring out how to progress. If you are stuck or cheating the level by throwing the cube and pushing against the door I encourage you keep playing it and finish it properly.

All of the other puzzles of yours I've completed were 3.5/10 at most so this was definitely a step up for me.

I had put this puzzle back in my queue last year in order to replay it, but funnily enough I couldn't resolve it. Finally cracked it the other day ( it was the reuse of the bridge that I was stuck on ) and, as I said two years ago, this is a special puzzle. Definitely in my top 3 maps of yours :>

@Inifroyo Thanks for playing! Excellent work solving this difficult puzzle :D This is still one of my favourites of myself haha. Admirable tenacity sticking with it for three days. Glad you liked it

Man this puzzle was just awesome, the only words I can muster to describe it, it took probably 3 different days of me going back and fourth with the solution in my head, one day I got to the final part of the puzzle, and then spent 30 minutes thinking on how it was impossible and I messed up, only for me to realize tommorow that I was on the right track in the first place.

@DemonMathTeacher Haha thank you! It's pretty tricky indeed. Great work solving it :D

Ouch! I'll have a headache for a few days after that. Great puzzle!

@Mr Fab Thank you very much! Excellent work solving this one :D

Great map with a nice logic to it ! I had a lot of fun, favorited

Still a brilliant puzzle; which probably to me as long to complete this time, as it did the first time!

Nice

@Senator Brainstrong Thank you very much! Your solution was perfect. I'm honoured to hear that you plan on playing my entire workshop - some maps might be better than others (especially back in the day :p) but I hope you will enjoy most of them regardless. I'm glad you enjoyed Morphism and Isomorphism, those maps turned out very well imho :] And yeah, there's a few fairly difficult maps in my workshop here and there, but since you bested all of Leo's workshop, I think you'll be able to solve them all. Good luck and have fun ^_^

Nice puzzle! I enjoyed it. I wish it were harder so I could spend more time with it because I liked the layout and the catch :D I'm going chronologically through your entire workshop. Seeing that this is one of your earliest maps, I'm intrigued to see what's next, and I'm also excited for your music. I played Morphism, Isomorphism and maybe a few other maps too some time ago, and from what I remember, I had a lot of fun! I noticed that you rated the difficulty of some of your maps 7.5/10. I can't wait to try those, especially now that I have Leomievs' workshop under my belt :D

My solution: https://youtu.be/wnd52yMIB68

@BehindPortal Excellent work solving this one! I'm glad you liked it :D

pretty hard fav

@Teo Thank you very much :D That's my favourite thing about this puzzle as well. Excellent work solving it!

Really special puzzle. Loved the reuse of the lightbridge

That "Ahhhhhh" moment really is a turning point in thinking - Good Job Mike

Blind Run: https://youtu.be/qxyaUbLDRiE

@Spider_Dawg Thanks! This remains one of my favourites of my own to this day

Excellent puzzle, took me almost as long the second time as the first. I still don't think I have it memorized. Great job.

@Narkodes Thank you :D I'm really happy to hear that you liked it. I think this is still one of my favourite puzzles of my own