DEFINITION
Interferences with play are irregularities other than errors and are
dealt with under Laws 30 to 35
(but see Law 39(b) for restoration of bisques in
handicap play and Law 53(g)(2) for restoration
of time in time-limited games).
DELIBERATE
INTERFERENCE A player must not deliberately commit an interference.
PLAYER
MUST DECLARE A player must immediately forestall play and declare
any interference he believes may have been committed by either player.