I recently played a game where I tried a rush strategy running out Ironworks to pickup Tunnels and then Estates. I decided it was worth a shot because Tunnel was a good counter to most of the attacks on the board, Torturer, Margrave and Pirate Ship, plus there were no Villages to make a Torturer chain dominant.
I ended up not quite being able to eat up the Estate pile before my opponent bought the Province he needed to pull ahead, but it was close (if I'd ended it a turn or two earlier I would have done it, but I had some bad luck on some turns when I could only gain a single Estate.) What do you think are viable enough situations to try a rush strategy when the strategy isn't obviously dominant? Setups like Ironworks/Great Hall/Gardens, or Ironworks/Silk Road/Island are straight forward, they'll win every time, but what are the weaker ones that make the rush viable?
