My hand as OVERCALLER

Question 1

Overcall of Unusual 2NT shows hand with TWO FIVE CARD SUITS. THE TWO MINORS IF ONLY ONE ENEMY HAS BID AND THE TWO LOWEST UNBID SUITS IF BOTH ENEMIES have bid (Michael’s cue bid is an overcall of enemy’s opening of a major and shows the other major and an unspecified minor)

Answer 1

Points:  can be as low as six points or up to say 12; must have points in the two five card suits 
Type of auction: competitive 
Type of hand: unbalanced
Type of bid: artificial; slam seeking.
E.G. (1D) 2NT, OR, (1S) PASS (2H) 2NT

Question 2

ENEMY OPENS A MAJOR. I OVERRCALL WITH MICHAEL’S CUE BID SHOWING THE OTHER MAJOR AND A MINOR

Answer 2

Points: 13+ 
Type of auction: noncompetitive 
Type of hand: 
Type of bid: 
E.G. 1S (PASS) 2S

Question 3

ENEMY OPENS 1NT

As overcaller I bid an artificial systemic bid of ASPTRO (CANNOT BID IF INTERFERENCE FROM ENEMY’S PARTNER):

Answer 3

Name: Asptro
Alert: Yes
Type of hand: two suited hand. 5/4 combination, with MAJOR AND MINOR (OR TWO MAJORS). Can be 6/4 (show 6 first?) but not 4/4. Cannot be in the minors.
Points: 8+ (in the suits or more needed up to 12)
Type of auction: competitive
Type of bid: Overcall of 1NT - my overcall bid of the shorter of 5/4 by ANCHORING to the shorter suit, 2C anchors to hearts, so 4H and 5C; 2D, anchors to spades, so 4S and 5D.
CLUB ANCHORS TO HEARTS AND DIAMONDS TO SPADES, SO WITH 4H AND 5D YOU STILL BID 2C, AND 4S AND 5C YOU STILL BID 2D.
Partner’s response to 2C: RESPONSE TO THE ANCHOR BID LIKING THE HEARTS = NATURAL 2H/3H/4H. 2H (LET’S PLAY HERE) 3H (INVITATIONAL – BID FOUR IF YOU HAVE THE HAND OR CUE BID IF HAVE SLAM INTEREST) 4H (LET US PLAY IN GAME – NOT INTERESTED IN SLAM).
Partner’s response to 2D – AN ARTIFICIAL BID IS ONE SUIT HIGHER THAN THE ASPTRO BID MINOR AND ASKS WHAT IS YOUR FIVE CARD SUIT. IT MEANS THE 2D RESPONDER DOES NOT HAVE A SPADE FIT. IT MIGHT BE HEARTS (AS THE ASPTRO BID ALLOWS FOR A FIVE CARD HEART SUIT).
PASS = THE FIVE CARD SUIT IS DIAMONDS. SO LET US PLAY IN DIAMONDS.
2C, WITH DIAMONDS AS THE FIVE CARD SUIT, RESPONSE TO THE ANCHOR BID LIKING THE HEARTS = NATURAL 2H/3H/4H. 2H (LET’S PLAY HERE) 3H (INVITATIONAL – BID FOUR IF YOU HAVE THE HAND OR CUE BID IF HAVE SLAM INTEREST) 4H (LET S PLAY IN GAME – NOT INTERESTED IN SLAM).

Note: If enemy two bids, you must double; ASPTRO cannot be used.