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I play with a keen inexperienced partner once a month with the aim of helping her progress. I try to give her advice if there is anything obvious that I can pick up on where she could have done better. Earlier this year there was a hand where I led a high spot card to give her a ruff which was signalling for a spade return and she didn't pick up the signal, so I went through this type of signal with her afterwards. A hand came up yesterday where I used this signal and she picked it up immediately which resulted in an excellent defence: [hv=pc=n&s=s74hk9843djt872c3&w=saqt8h765dk93ct98&n=s93ha2d654cakj642&e=skj652hqjtdaqcq75&d=e&v=0&b=14&a=1sp2s3c3sppp&p=c3c8ckc5cac7d2c9cjcqs4cth4h5hahth2hjhkh6h8h7s9]399|300[/hv] That was worth 5/8 MPs. It is satisfying to teach someone a concept which they haven't come across before and they are able to understand and apply it a considerable time later.

We say that for a lot of games.

If trumps are 2-2 there is an elimination and endplay. Draw trumps, diamond to the ace, ruff a club, cash top diamonds throwing dummy's last club. Ruff the last diamond in dummy and run the ♥J. If it is covered you win and only lose one heart. If West wins he is endplayed. If trumps are 3-1 I'm thinking draw trumps, diamond to the ace, run the ♥J. If it is covered you have 12 tricks as before. If it loses to East win the return (certainly a club) and cash another two rounds of diamonds throwing a small heart. If the JT come down the nine is the 12th trick, otherwise ruff the nine in dummy and take a second heart finesse. West might have led the king from ♥KQ so I feel there is a good chance he doesn't hold both heart honors. If trumps are 4-0, I'll beat up whoever dealt the boards this week.

This club is playing a game that resembles bridge but is not bridge.

It's very close but Suitplay says low to the 10 is 56.2% while running the Q is 53.8%

There is actually a Duplicate Bridge Law 41D that specifies how dummy is supposed to be spread out after the opening lead. BBO's original version correctly displayed dummy according to Law 41D. The original BBO version also allowed for rotating hands so that dummy would appear at the top of the screen (or other positions) so BBO went backwards in designing the last 2 versions. I've asked BBO to "fix" the dummy display several times over the years and once got a response asking how dummy should be displayed?!? RealBridge is an example of a site that displays dummy according to custom and Law 41D.

I have a GitHub account and I also make ShinyApps but I am really not good at software engineering (my last IT job was 21 years ago) so I wouldn't encourage anyone to try to use any of my code. Once I get something that is worth sharing I will do so, but it will be in the form of ShinyApps or bare-bone algorithm implementations. Not anything like a software engineering project. I don't think such a system has ever been used by humans at all. There was one reasonably playable AI system published a few years ago but the problem is that even if such a system would be technically great, it might be impossible to memorize, and it may be illegal.