I have been playing an interesting toy for about 10 years with various partners. 1st and 2nd seat 1♣: artificial Force 13+ unbalanced 16+ balanced 1♦: 10-12 balanced or semi-balanced (could be 5-4-2-2 with any suits) 1♥: 4+ hearts; 8-12 hcp; could have longer minor 1♠: 4+ spades; 8-12 hcp; could have longer minor 1NT 13-15; balanced or semi balanced 2♣/2♦: 5+ in bid suit, no 4-card major, if only 5 card suit must have shortness and 4+ cards in other minor 2♥/2♠: 6-12 hcp; 6 or 7 cards; if 6/7 hcp then unbalanced it 8-12 then 6-3-2-2 or 7-2-2-2 2NT: Both minors Has worked pretty well in the local tournaments. Thank you - zeus