TylerE

I hate 2NT on the west hand. Just overcall 2♦. This hand is WHY 2NT (or Michaels) with intermediate hands is a bad idea. Much easier life if 2NT is either weak (5 to a mediocre 11, say) that can comfortably pass any non-forcing bid, or with clear extras.

Rubber has been dead on BBO for years.

That's not the point. Of course that's what it shows. The point is that after 1c-1d-1N, opener's (and respodners) major rebids are never natural, because responder already denied a 4 card major.

No. It's simple. When responder bids 1♦ over 1♣, they NEVER have a major, unless strong enough to always insist on it later. Thus opener has no need to probe for one. This makes subsequent auctions much easier. You just bid 1N and get on with your life, and later bids a major are stopper/cue. You're never trying to back into a major suit fit unless responder goes through a 4SF type auction.

MAFIA. Don't bid up the line. 1♦ is either weak or GF with strong diamonds. No one cares about diamonds. Majors win.

Something has to be some sort of art (or natural single suited) GF or your system is broken. IMO some sort of 2w checkback is best over weak NT - in which case, 2♦ would setup a GF, over which opener will rebid naturally (mostly bid a 4 card major with one, or raise ♦ with 3), and then responder's 3♦ shows a GF ♦ single suiter.

I would make whatever GF bid I have available. Since you're giving a fantasy problem with no meaningful systemic detail it's impossible to be more specific.

I don't think it's quite a pure guess. I would argue that W is slightly less likely to hold both aces, as a fairly large subset of the hands that bid over 1NT (Which W obviously didn't) will hold both aces. It's a pretty weak negative inference, but I'd say this is maybe something like 45/55, not a coin flip. There is additional inference to be gleaned from the lead... if W had a good suit they could have lead that...and didn't.

Don't think it's much of a guess. After the lead, if W gets in again we're dead. K♥ at trick 2. Sure if the A is with W and the Q with E it gives up an extra undertrick or two, but it's IMPs, who cares? Making is what matters.

I do not believe such a club exists.. Sure, some hands will be flat no matter what, but most will not. I like my matchpoint odds against all but the strongest MP field (which from your posts, your's isn't, not even close).

I don't want to be in a "pretty good" slam at matchpoints that the field is obviously not bidding. I expect to score a 75%+ board from declarer play in 3N on a hand like this a lot of the time, certainly not below average.

I will be quite happy to settle in 3NT over 5♣ on this hand. I don't even especially want to be in 6 seeing both hands.

W doesn't actually have a minimum double. No 3rd heart, AQxx !D likely in the right spot..., Hxx support It certainly isn't *extras*, but it isn't minimum.

It's IMPs and we're red. Passing an invite is a hanging offense. Only pass if you psyched your double.

Autoplay singletons in a evil option that is basically cheating. It shouldn't exist. The timing gives far too much away.

Masterpoints are a measure of attendance, not skill. Comparing them to ELO is a fool's errand.

You're thinking of flighting. BBO does not flight. You play the entire field. It's an open event. Stratification effects the final ranking/points only. Not who you play against.

What is 3N? If it's not some sort of Serious 3NT partner has a major lack of ambition.

I would have reversed into spades rather than raising diamonds. 3d feels like both an underbid and less support than I'd really like. How about something like... 1H-2D 2S-2N 3D-3S 4C-4N 6D 3S and 4C are cues, 6D would be 1 keycard + a working void.

I've often said it's actually the ultimate beginner system. It's really very simple, 99.9% of the bids are truly natural - and thus you don't need a bunch of the artificial tools 2/1 needs just to handle basic shape auctions, and like you said, it will teach judgement that will always be useful.

The one technique that mostly works is to open 1N whenever remotely reasonable. Something like a good 13 to a bad 18. That usually keeps the bot from making absurd leaps to impossible games/slams, at least.

There's a huge difference between "not promising" and "denying".

Anything besides Open / 2S is nuts.

I would pay all of my oppoenents to play 2!D=18-19. By all means, starting the bidding above your likely best contact.

It seems insane to me that alerts are not associated with a specific partner. Is there any way to at least limit bboalert to working with certain partners?