1♥-1♠ Opening

♣ - ♦ - ♥ - ♠

1♥ - 1♠   OPENING 11-14

11/14(bad 15), 5+M or 5M/4(5)X

over interference of 1♥ or 1♠ opener

over an enemy double:

• PASS (let us listen what they say)

• XX = 9+ hp

• from 2M to 3NT --> SYSTEM ON

over an enemy bid:

• X = 9+ hp

• from 2M to 3NT --> SYSTEM ON

• overcall opp. suit = limit raise, 3 or 4 cards 9/11 hp