1eyedjack, on 2017-April-09, 14:11, said:
So, applying that principle to the sequence in hand, apparently we have to ask ourselves have we through the bidding established that we hold the balance of the points? I suggest not. In that case we next ask our selves has responder yet to bid? and then answer to that is "yes". In which case according to the algorithm "all bidding is natural and non-forcing". This would appear to include 4C. Do we really want to make a non-forcing 4C bid here? Nowhere in the website, incidentally, does it suggest that 4C = 8+ positive with 5+ Clubs (although that would be a more sensible definition, if perhaps not optimal).
LOL, That's a small part of one page of a fairly extensive site. If you look elsewhere you will find that using OCP you would probably need a bit more than a mere 8 hcp with 5-card Clubs to come in with a positive response at the 4-level. One thing the site will tell you is that 4
♣ would be 100% GF (as is
any positive response) and definitely
not non-forcing. As I said in another post, Responder wouldn't necessarily have to have a 16-count, which is why personally, I would bid a natural 4NT over 4
♣ (If nothing else just suggesting that all I have is a 16-18 balanced hand with good control of the Diamond suit). In OCP 4NT is never RKCB, so that's an option for us. Clearly with the hand Responder has they'll not leave that in, but I would probably expect them to do so with an average 11-13 hcp with 5+ Clubs).
If you can't bid 4NT naturally, then 4NT RKCB or 5
♣ are pretty much your only alternatives over 4
♣, I guess. Once again, Responder is very unlikely to leave 5
♣ there with the hand they actually held, but you're unlikely to end up in anything else other than 6
♣. 4NT RKCB will get you 5
♠ and now 6
♣ or 6NT are both right-sided, but either way you've no room to find a Spade fit.