[Thranduil]

The robot made three dumb things in three consecutive boards in a tournament, essentially ruining said tournament for me.

First one: https://tinyurl.com/25t5ydcb

Why does it run from my X? My X here cannot be anything else but a penalty considering we already have shown our fit after the initial takeout X, and the robot even has the ace of trumps. Instead of +800 for us, it's -200 and only because we were lucky and did nnot get doubled.

Second one: https://tinyurl.com/27j5ecd6

Why does it repeat its negative X with that crap minimum hand? I passed, it has nothing additional to show here. We ended up in 3NT as I espected at least invitational values, down 4 for -200 again.

Third one: https://tinyurl.com/263katgo

It passes a new suit by responder, which should always be forcing. We miss our game, +170 instead of +620.

[smerriman]

The third one is your mistake; 2♥ nonforcing is completely standard. Start with 2♣.

Agreed the other two bids by GIB look weird, though 3NT wouldn't have crossed my mind on the 2nd and 3♦ would indeed have beaten 2♥ (and there is a common maxim to never let opponents play in a fit at the 2 level. But pass seems the only option.)