Fit showing jumps

A responder bid with jump after partner 1♡/1♠ opening and over interference. Conditions:
  • the partner opening 1♡/1♠;
  • support for the suit of the partner with at least one honor;
  • concentrated HCP in opener's and responder's suits;
  • responder's suit should have two of top three honors;
  • no HCP in other suits;