|
Apertura |
Intervento |
Significato dell'Intervento |
|
1 |
2 |
bicolore quadri picche |
| 2SA | bicolore rossa | |
3 |
bicolore cuori picche |
Sulle aperture naturali di 1♦:
|
Apertura |
Intervento |
Significato dell'Intervento |
|
1 |
2 |
bicolore nera |
| 2SA | bicolore fiori cuori | |
|
3 |
bicolore nobile |
Sulle aperture naturali di 1♥:
|
Apertura |
Intervento |
Significato dell'Intervento |
|
1 |
2 |
bicolore nera |
| 2SA | bicolore minore | |
|
3 |
bicolore quadri picche |
Sulle aperture naturali di 1♠:
|
Apertura |
Intervento |
Significato dell'Intervento |
|
1 |
2 |
bicolore fiori cuori |
| 2SA | bicolore minore | |
|
3 |
bicolore rossa |
Come tutte le convenzioni di successo la Ghestem è stato più volte modificata da molti giocatori che tentavano così di migliorarla e oggi ne esistono in circolazione diverse versioni, motivo per il quale vi suggerisco di accordarvi ben bene con un vostro partner occasionale prima di convenire di giocarla.
This
convention has been conceived by the French champion Pierre Ghestem and
because of this it holds his name.
The convention has got with time many variants, but the basic idea remains to show in one go a 5.5 (or more) following an opponents opening.
Pierre Ghestem told not to count HCP of the hand, but its losers, recommending to have 6 (or less) when vulnerable and 8 (or less) when not.
The original convention was easy to remember because provide three only conventional interfering levels over any 1 suit opening, excluding the opening suit:
Overbidding = two suit higher and lower in rank
2NT = two suits lowest in rank
3♣ = two suits highest in rank
That is:
Against 1♣ opening:
|
Opening |
Interference |
Meaning |
|
1♣ |
2♣ |
diamonds and spades |
| 2NT |
red suits |
|
| 3♣ |
hearts and spades |
Against 1♦ opening:
|
Opening |
Interference |
Meaning |
|
1♦ |
2♦ |
black suits |
| 2NT |
clubs and hearts |
|
| 3♣ |
majors |
Against 1♥ opening:
|
Opening |
Interference |
Meaning |
|
1♥ |
2♥ |
black suits |
| 2NT |
minors |
|
| 3♣ |
diamonds and spades |
Against 1♠ opening:
|
Opening |
Interference |
Meaning |
|
1♠ |
2♠ |
clubs and hearts |
| 2NT |
minors |
|
| 3♣ |
red suits |
As all successful conventions Ghestem one has been changed by many players who were trying to better it and nowadays several versions exist.
I then suggest to well agree with your partner before trying to use it.
La Convención Ghestem es un método para mostrar bi-colores fuertes después que
los opps abrieron la subasta. El concepto fue desarrollado por Mr. Pierre
Ghestem de Francia. El concepto no es dificultoso y se puede aprender en unos
minutos, pero lo importante es recordar que la Ghestem promete tenencias fuertes.
Todos los cantos de la Ghestem deben alertarse, y deben ser explicados si se pregunta. La explicación debe incluir el hecho de que la mano es fuerte. La mejor explicación es decir que la mano se evalúa con un máximo de 6 perdedoras si se es vulnerable y un máximo de 8 con vulnerabilidad a favor.
También es esencial que los honores del que usa la Ghestem deben estar localizados para asegurar la cuenta de las posibles bazas perdedoras.
El sistema Ghestem generalmente se aplica después de la apertura de 1♣ de los opps, pero se usa también contra cualquier otra apertura a nivel de 1 a palo. Estas sobre-declaraciones pueden ser confundidas con otros cantos naturales por eso el compañero del que sobre-declaro debe estar atento para no confundirlas.
|
Oponente |
Sobra-declarante |
Significado |
|
1♣ |
2♣ |
promete ♦ y ♠ |
| 2NT |
promete ambos palos colorados |
|
| 3♣ |
promete ambos mayores |
|
Oponente |
Sobra-declarante |
Significado |
|
1♦ |
2♦ |
promete palos extremes |
| 2NT |
promete ♣ y ♥ |
|
| 3♣ |
promete ambos mayores |
|
Oponente |
Sobra-declarante |
Significado |
|
1♥ |
2♥ |
promete palos extremes |
| 2NT |
promete ambos menores |
|
| 3♣ |
promete ♦ y ♠ |