ANTI-CRITICAL Move
Move of the line piece through the critical square in order to avoid covering.
Parrying the threat, black makes anti-critical moves (1…Bh2 and 1…Ra5) in order to avoid checkmate Rf4 or Sc5, but at the same time these moves are critical ones, because the new mates (3. Sd6# and 3.Sg5#) appear as a result of the covering.