13 May
2019
13 May
'19
10:26 p.m.
Rob Pike writes:
Ken tells me (and I now remember) that the photo in the article was of a
sort of input device, a board built by Dave Hagelbarger that sensed where
the pieces were so could digitize moves.
-rob
My extremely fuzzy recollection is that Dave had an LC tuned circuit in the
base in each chess piece and an antenna coil underneath each square on the
board.
Jon