G'morning Aleksej, 

 ARS> Hmm... "Japanese crossword" is one name for them, there
is another ...
 ARS> A J.c. looks this way:

 ARS>      5   1 4 6
 ARS>      2 3 5 4 2
 ARS> 1 2 5         |
 ARS> 6 2 1         |
 ARS>   5 3         |
 ARS>  16 1         |
 ARS>      ----------

 ARS> By solving it, you draw a picture. I'll write details, if needed.

Help .. I'm lost already - best draw that picture !

 MM> And this allowed us to move into N dimensions - the center square
 MM> in 5 dimensions was 2,2,2,2,2 for example,  and was a winning move
 MM> if you already had 2,1,2,2,2 and 2,2,2,3,2 !

 ARS> Cool! Damn, this is the way I should have been trying to
 ARS> write tic-tac-toe in QB some years ago. :))

Using I,J,K notation provided an easy testing for line completion 
- and then an excellent framework for playing the game..

 ARS> ... Too old? It works. So shut up.

So true,  especially in psychology...

:-))
 
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