Juri Linkov <address@hidden> writes:
Just split a frame into 4x4 squares, create buffers with names 1..15,
and use S-arrows to move point between windows and C-S-arrows to move
buffers between windows (well, this is not exactly real rules of 15,
since adjacent buffers are swapped, not moved with pushing other squares
but this is very close.)
It's a rather important detail, since with the original rules it is
impossible to swap two neighbouring squares, partitioning all possible
arrangements into two distinct sets with no way to transform between
them.