[lycier]

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6♠？这是粗枝大叶的感觉牌，缺乏必要的技术含量，真的没意思！
那么，您是如何细致而合理地叫上大满贯的？

[wuhuan]

4NT一5C
5D 一7C
7S
5C(1A)，5D(问SQ)，7C(有SQ十CK十CQ)。

[bgm]

Try with the recently practice relay system CHAOS:

1♦ = (10)11+, 5+♥ except 4♥ UNBAL, including 5♥5+♠
......1♥ = 8+, relay
1♠ = (10)11-14, MIN
......1NT = FG, relay
2♦ = 5 or 7 card ♥ w/ 1♦ OR 4♥ UNBAL
......2♥ = relay
3♦ = 4513 (start to probe 6♠)
......3♠ = RKCB in ♠
3NT = 1 or 4 KC (good news)
......4♦ = Traditional Spiral Scan
4♠ = w/ ♠Q, w/o ♥K (6♠ very likely)
......4NT = Parity Spiral Scan for ♣K, ♦K, ♥Q
5♦ = ♣ K or ♦K + ♥Q (i.e. ♣ K)
......5NT = Traditional Spiral Scan (confirm ♣ Q not missing, not ♦Q instead)
6♦ = w/ ♣Q, w/o ♦Q
......7♠ = S/O

[shisun]

1h----------1s
2s----------2nt(NAGY)
3c----------3d
3h----------4C
4D----------4H
4S----------4nt
5c----------5d（问q）
6c（CK+SQ）--6d（还有东西吗？）
7s

[lycier]

shisun, on 2014-August-17, 07:34, said:

1h----------1s
2s----------2nt(NAGY)
3c----------3d
3h----------4C
4D----------4H
4S----------4nt
5c----------5d（问q）
6c（CK+SQ）--6d（还有东西吗？）
7s

完全赞同，very very good.