Brozel

Brozel (pronounced "BRA-zel") is a convention for use after the opponents open 1NT. A double shows a one-suited overcall, and all 2-level bids show specific 2-suited hands. The 2-level overcalls emphasize the heart suit, with 2, 2, and 2, all showing some kind of two-suiter that includes hearts.

After the opponents have opened 1NT:

Overcall	Meaning
Double	Artificial. Shows any good single suit of 5+ cards (normally 6+), and sufficient values to overcall at the 2-level. Requires partner to make an artificial 2 bid. After the 2 relay, pass with clubs or correct if holding a higher suit.
2	Shows clubs and hearts (at least 5-4 shape). Partner can pass with club tolerance, or correct to 2 with longer hearts.
2	Shows diamonds and hearts (at least 5-4).
2	Shows hearts and spades (at least 5-4).
2	Shows spades and a minor (at least 5-4). Partner can pass with spade tolerance, or bid 2NT to ask for the minor suit.
2NT	Shows clubs and diamonds (at least 5-4, usually 5-5 or better). Partner should take his preference by replying 3 or 3.

Note that partner should always take the cheapest preference when holding equal length in the two advertised suits. For example, after hearing a 2NT overcall, partner should bid 3 with 3-3 shape in the minors.

If partner is lucky enough to hold game-invitational values or better, then he should raise or jump-bid any advertised suit.

Brozel also includes bids to show 3-suited hands, e.g. 4441 or 5440 shape (rare). A jump overcall at the 3-level is artificial and indicates shortness in that suit:

Overcall	Meaning
3	Shows a 3-suiter short in clubs.
3	Shows a 3-suiter short in diamonds.
3	Shows a 3-suiter short in hearts.
3	Shows a 3-suiter short in spades.

Partner is expected to take a preference for whichever suit he likes most. Since he may be forced to take a preference at the 4-level, these overcalls should promise very good hands (relative to the HCP range of the opponents' 1NT).

Brozel was invented by American player Bernard Zeller. It is identical to the Pinpoint Astro convention, except that Double is for penalty in Pinpoint Astro.