Power double (PDBL) and Scramble double (SDBL)

PDBL is possible only after opponent's opening on level 1.

For PDBL we must have a one suiter and 8 tricks if we could overcall on level 1 or 9 tricks if we would overcall on level 2.

If after we doubled we bid voluntarily, then our dbl was PDBL.

When after our dbl partner bids, and we bid another suit, then our dbl was:

    PDBL, if our bid without a dbl would be a jump overcall 

        example: (1♦) - dbl - (pass) - 1♠ - (pass) - 2♥, if no dbl, the bidding would go (1♦) - 2♥ jump overcall

    SDBL, if our bid without a dbl would be a normal overcall 

        example: (1♦) - dbl - (pass) - 1♠ - (pass) - 2♣, if no dbl, the bidding would go (1♦) - 2♣ normal overcall

SDBL promises at least 3 cards in other M (4, if we doubled 1M) and 2 cards in m.

FOL's raise after PDBL (and suit bid) is invitational.