Hi,
I'm french, sorry in advance for my bad english.
First, to answer your questions :
> can you play blindfold shogi?
never tried (no opponent, and I haven't been playing shogi as long as
I've been playing chess...)
> Can you play blindfold chess?
Yes
> Do you believe, that the ability of playing blindfold shogi will
increase your playing strength?
I think that they are correlated, but that it isn't useful to
specifically train to play blind shogi : simply by playing shogi,
reading books, etc., the ability to "read sequences" without moving
pieces will develop by itself.
Similarly, I never *learned* to play blindfold chess, I just learned to
play chess, and by progressing in normal chess my ability to play
blindfold chess naturally developed itself.
> Do you believe it will HELP or make it more DIFFICULTY to learn
blindfold chess before?
Not more difficult, I don't think the coordinates are a problem at all.
> Do you think it will be a good idea to make (at least in brain) the
shogi-board also two-coloured, which makes it (much) easier for the
(very important) bishop moves?
Actually, I was never able to remember the colors on the chess board,
and I was able to play without it.
> Do you think learning in 3x3 chunks (splitting the board into 9 parts)
is the best way?
I believe the bishop moves would be harder in this case, but how to
use 4x4 chunks instead?
If I refer to my "experience" in playing blind chess, I, at least, don't
split the board precisely in such a way.
Now for the comments about the puzzles :
when playing blind chess, rather than remembering the position at each
move, I think I remember something like the logic of the position, i.e.
the sequence of moves that lead to the position. I guess by constantly
reconstructing the position in my mind I do remember some positions too,
but that does not come first.
So for me, the first kind of puzzle is rather difficult, and would be
difficult for chess too : i'm not used to remembering one position.
It's far more easy to remember a sequence of moves, like the second puzzles.
I didn't actually tried your problems though, I don't have the correct
fonts and the webpage does not load properly.
If I may ask, why do you have so much questions about blind shogi?
Jean