génial !!! thank you very much for this, jellby !! i first read this story in a very old, dusty, and falling-apart paperback (which i still have... but maybe not for much longer
) years ago, it will be nice to re-read it without the dust !
it is really a brilliant locked-room puzzle, i highly recommend it to anyone who likes mystery stories. thanks particularly for taking the trouble to redraw the maps, it's so frustrating when they are missing from ebooks.