Message #1854

From: Matthew <>
Subject: Re: Blindfolded hypersolving
Date: Wed, 10 Aug 2011 12:30:17 -0000

I’ve been wanting to get back to this for a while, but I was busy with other things, most notably a speedcubing competition just over a week ago which I was practicing for, as well as other time-consuming things like helping to redecorate a bathroom. Since I now have an official 7/7 multiBLD result and 4BLD success, I should be able to do this without too much bother. With my memo method, an average solve (I’ve had a few near misses on 2^4BLD so I have some experience to go on) involves <=30 letters by using a lettering system, which is less than 2 3x3x3s worth. By a rough estimation, a 3^4 is about 6 3x3x3s worth of information, and is perfectly possible to be solved BLD style. I intend to try at some point, after a few dry runs to get used to the solving method (I have both a solving and memorising method prepared for it). Also, I don’t feel that macros are necessary at all for this. In fact, I won’t be using any as I feel it is more natural without them, and that they wouldn’t help much anyway. I might have some time just now actually, if so I will make another attempt on 2^4. One day, hopefully soon, I intend to get a success on video to help validate my result.

Nan, it would be interesting if you had a go at this too, then maybe we can compare techniques afterwards and possibly learn from each other.


— In, "schuma" <mananself@…> wrote:
> Hi everyone,
> This thread about blindfolded solving was here for several months and I wonder if anyone has solved any 4D puzzles blindfolded. As Matt said, 2^4 seems to be within reach, especially using macros and undoing setup moves automatically.
> Recently I am quite into blindfolded solving of 3^3. The numbers of states for 3^3 and 2^4 are ~10^20 and ~10^28, respectively. So memorizing a 3^3 and 2^4 is basically memorizing 20 and 28 digits, respectively. The difficulty should be similar. Since I feel the major challenge for blindfolded solving is memorization, I don’t think using aids is a deal.
> Nan
> — In, Melinda Green <melinda@> wrote:
> >
> > I’m changing the subject line so as to not steal any thunder from Matt
> > and Ethan’s amazing accomplishments.
> >
> > Although it would be neat if the first ever blindfolded 3^4 solution
> > were done without macros, I think that you should be able to make full
> > use of predefined macros. I see no reason to make this harder than it
> > needs to be. To me the feat is about the ability to hold an entire
> > solution in your head for long enough to affect the solution. Other
> > people may feel that the experience should be closer to the 3D version
> > and I fully respect that view. Whatever the majority opinion of those
> > who are thinking of attempting this is just fine with me.
> >
> > Although I have no concern that anyone on this list would ever cheat in
> > such a contest, I think it would be good if we at least addressed the
> > possibility. My suggestion for a simple safeguard is to require the
> > solver to declare a witness willing to affirm that they observed that
> > the entire solution was performed fairly. This should also make any such
> > solution a bit more formal which might feel more satisfying because it
> > makes it very clear when you are making a serious attempt.
> >
> > -Melinda
> >
> > On 1/11/2011 6:06 AM, Matthew wrote:
> > > Congrats to my namesake for beating the 120-cell, and to Ethan, welcome to the club! Membership includes a free straight-jacket and a psychiatrist (just kidding of course). I would also love to hear about your experiences with the solves. When I get the time I plan to try and have a look at Ethan’s solution to see how he went about the solve, though a description would be a good place to start.
> > >
> > > To answer some of Melinda’s points: I believe that any challenge available for these puzzles which is humanly possible will eventually be conquered by someone. Also, 3^4 blindfolded is already on my to-do list. I have already posted about trying to solve the 2^4 this way, though after several attempts I have not been successful yet (my closest was off by 2 corner twists). I have a memorisation method planned out for the 3^4, all I need is to finish planning the execution method and enough free time (and to get better at blindsolving). I will try and beat the 2^4 first though, and maybe get the solve stage on video if I can.
> > > This presents a question, are pre-recorded macros allowed? Are macros recorded during the solve allowed? Solving the 2^4 blind without them is easy enough, but it will be significantly more difficult to conquer the 3^4 without them. I also wonder about the commutator and conjugate ability of MC7D. Part of the difficulty of blindfold solving is doing and undoing the setup moves correctly (significantly harder in 4D!), and these functions would reduce that difficulty. My aim is to blindfold solve without these aids, but I was wondering what other people’s thoughts are.
> > >
> > > Sorry for getting a little carried away when this is supposed to be about these two great solves (and solvers). Now we have to wait and see what they solve next!
> > >
> > > Matt
> >