Ekren 2♣

Ekren is an artificial preempt showing 4+ cards in each major. It is originally at 2♦. Polish Club 2020: Expert moves it to 2♣ to replace Precision 2♣ and leaves space for Multi.

2♣-PRE, 4+♠, 4+♥
2♦!F, ask for the better major suit
2NTNAT NF, usually long ♦
3♣NAT F
3♦NAT F
4♣!STR choice of games
4♦!PRE choice of games
2♣-2♦-Ask for the better major
2♥♥ ≥ ♠
2♠♠ > ♥
2NT!ART, 5+♠, 5+♥
3♣!MAX SPL, 0–1♣, 5+♠, 5+♥
3♦!MAX SPL, 0–1♦, 5+♠, 5+♥
3♥6+♥
3♠6+♠

There are two kinds of choice of games:

  • 4♣ by strength
  • 4♦ by distribution

Such distinction helps judging how to react to interference. Besides, 4♣ lets the strong hand declare. On the other hand, 4♦ closes the auction ASAP.

2♣-4♣-STR choice of games
4♦!TRF, ♥ ≥ ♠
4♥!TRF, ♠ > ♥
2♣-4♦-PRE choice of games
4MTo play