Mathe Asking Bid
Over a limit raise by partner, the next bid (3S if hearts, 3N if spades) asks partner to bid their splinter suit, if they have one. NOTES: After 1H-3H; 3NT is used to show a spade cue. Also, after 1H-3H; 3S- 3NT is used to show a spade splinter. Examples:
part you
1H 3H
3S(1) 4H(2)
(1) Mathe Asking Bid (2) Denies a splinter
1H 3H
3S(1) 4C(2)
(1) MAB (2) Club splinter
1S 3S
3NT(1) 4H(2)
(1) MAB (2) Heart splinter