Bez problem torguyu Fr Nat po zelmunu, no lutshe vsego Nash System (Polskiy Standart). Vist i drugoe po dogovorrennosti. 
 
4C - posle torgovli BK - Gerber, 4/5NT invit v 6/7 BK. 
 
Rimskiy blekvud. 
 
 
Otkritiya Nash System 
1C: a) 12-15 PC ili 19-23 PC ravnomer bez 5+ S/H/D 
     b) 11-21 PC, 5+C bez 5+ S/H/D. 
1D: 11-21 PC, 5+D, bez 5+ S/H (KROME 4-4-4-1, C singl) 
1S, 1H: 11-21 PC; 5+S/H 
1NT: 16-18 PC; ravnomer bez 5+S/H, mozhet bit 5 kart v minore) 
2C: 22+ PC neravnomer, 24+ PC ravnomer. FG! 
2D: 5-11 PC; 6+S/H - polublok ili 22-24 ravnomer 
2H: 5-11 PC 5-5, obezatelno 5 v cherve.  
2S: 5-11 PC 5-5 pika s minorom.  
2NT: 7-11 PC 5-5 v minorax. 
3S/H/D/C: Blok, slabiy 6-11 PC, 7+ S/H/D/C: 3NT TKDJxxxx (7-8 kart v minore) nichego bolee po bokam. 
4S/H/D/C: Blok, slabiy 6-11 PC, 8+ S/H/D/C