Simply Precision (opening bid)

I.Opening Bid
1C = 16 HCP (sembarang distribusi)
1D = 12-15 HCP, minimum 4 lembar kartu Diamond
1H = 12-15 HCP, minimum 5 lembar kartu Heart
1S = 12-15 HCP, minimum 5 lembar kartu Spade
1NT= 13-15 HCP, balance (no singleton,no void,no 2 shape doubleton)
2C = 12-15 HCP,minimum 5 kartu Club + 4 kartu major atau minimum 6 kartu Club
2D =12-15 HCP, 4414 atau 4405 pendek diamond
2H = 6-10 HCP, 6 kartu Heart
2S = 6-10 HCP, 6 kartu Spade
2NT= 22-23 HCP,balance
3C/3D/3H/3S = Preemptive