Natural 1

1-11–15: 5+, 44(xx), or UNBAL 4=
1!NF, usually 8–11, 0–4
1NT!F, 5+ or INV+ 4+
2FG, 4+
2FG, 4+
2CONST, 3+
2PRE, 6+
2NT!FG, 4+
3INV, 6+
3INV, 6+
3LIM, 4+
3!S/T SPL, 0–1, 4+
3NT!Choice of games, 12–16, 33(43)
4!S/T SPL, 0–1#, 4+
4S/O, 4+