I'm assuming, for the sake of this post, that the director took a look at agreements and decided that Ghestem was their agreement. If it wasn't I would consider fielded misbid, as I feel at least some players on souths hand would raise. I'd poll and probably expect this to be amber (but my judgement is not good). Assuming it is ghestem: I'm not too convinced by the argument that west would pass with the correct explination, but i could imagine that considering P to be short clubs compared with knowing your spades are not too well placed might swing the argument. Assuming a poll backed me up that this is not automatic, i would expect my ruling to contain percentages of west both bidding and passing. If west does bid, North has a strong hand for his bid, and does have UI, which suggests passing and 5♦ over a 5♣ preference. I would poll on this, but I dont think that 5♣ is an LA. If west passes then North, being strong might well consider bidding on, again we have UI, and again out of the possible calls, 4♦ and 4♠ and i'd argue passing are suggested over 4♣ (assuming that was prefernce). Were North to bid 4♣, that might get complex as south could well raise, and things could get messy from there. THat said I probably dont expect to find 4♣ to be an LA Its difficult to give an accurate ruling here as I dont know what the polls would suggest, however my own opinion is: 40% 4♥ -2, 60% 3♥ -1
