EHAA, akronim od Every Hand An Adventure, agresywny naturalny system licytacyjny.
Cechy charakterystyczne to:
- nielimitowane otwarcia 1 w kolor z czwórki (brak silnego forsującego otwarcia),
- mini otwarcie 1NT w sile 10-12 PC, z pewnością niebezpieczne w założeniach po partii,
- niezdyscyplinowane bloki 2 w kolor.
Cytat ze strony internetowej systemu EHAA czym jest EHAA:
"EHAA is an agressive, natural style of bidding that combines mini notrump openings, wide-range weak two-bids, and a Goren-like four-card major approach into an easy, effective, and fun way to bid. It is not a highly specified system, but rather, like Standard American or Acol, a general style which can be played in numerous variations. It's designed to be simple, but, like any other style, can be enhanced (or complicated, depending on your point of view) by adding conventions to suit your taste."
i skąd pochodzi:
"Nobody knows. It's known to have been played in both New York and California as long ago as the late 1950s, and had achieved significant popularity in many other parts of the country by the late 1960s. But its origins remain obscure."
OTWARCIA: 1♣ = 13+ PC 4+♣ 1♦ = 13+ PC 4+♦ 1♥ = 13+ PC 4+♥ 1♠ = 13+ PC 4+♠ 1NT = 10-12 PC BAL 2♣ = 5-12 PC 5+♣ 2♦ = 5-12 PC 5+♦ 2♥ = 5-12 PC 5+♥ 2♠ = 5-12 PC 5+♠ 2NT = 20-22 PC BAL
Miara średniego otwarcia = 4.06