The same match I picked up:
All red and partner passes, my RHO opens 1D natural (4+) and I pass. LHO jumps to 2S weak and partner surprisingly comes to life with a takeout double! Next guy passes and it's your call. What do you choose?
What are the choices? We could bid a feeble 3C or probe with 3D/3S. Maybe an invitational 4C or just stab 5C. What does partner have? This is a somewhat dangerous position for partner to get into, passed hand or not, and he should have some useful shape, maybe 5-card hearts.
Forsaking science for practicality, and with the extra chance that RHO might sacrifice with 4S with some hands he checked with this round, I pretty quickly decided to bid a confident 4H on my 'nice' T98. For 5C to be right it has to be a 2-trick better contract (11 vs 9) and I should be able to ruff some spade losers.
This was the layout:
After West failed to find the trump lead (confident 4H instead of wiggling into it, maybe helped), instead opting for partner's suit, the hand played itself for a crossruff and +620.
Imps is sometimes, bidding wise, a strange mix of taking chances, going scientific and being practical with a sense for the auction. The trick is knowing when to pick the right club out of the bag and then the 'big shuffler in the sky' has a propensity for rewarding you.
Or am I only rambling to cover up dumb luck...?