Welcome to Chen-Pang He (jdh8)'s experimental defensive bidding system! We use the distribution syntax and abbreviations provided by WBF.

This bidding system is based on Good, Better, Best by Jan Eric Larsson and my improvisation.

Over natural (1X)

Due to insufficient strength, 1NT by passed hand becomes unusual.

Balancing overcall

Notrump overcalls

Like a direct overcall, 1NT by passed hand is unusual.

After (1X)-1NT

Over strong (1 )

We use DOSC, our self-made defense inspired by DONT and Terrorist's Moscito.