Best Board
Stash, Market, Navigator, Apprentice, Chapel, Adventurer, Bridge, Merchant Ship, Harem, Venture
Interesting board in that it contains a lot of engine enablers, but no villages to actually build an engine with. Looks like a straight up Merchant Ship/BM to me with Markets for support.
I'm quite interested in the makeup of my best board. It contains three cards that I very rarely buy (Stash, Navigator, Adventurer) and three more that I do buy fairly frequently, but it always seems far less than my opponents (Venture, Harem, Bridge). It seems my strength in Dominion is more knowing about what cards to leave alone than what deck to actually build.
Worst Board
Pawn, Kings Court, Contraband, Crossroads, Fishing Village, Watchtower, Baron, Walled Village, Trade Route, Farming Village
Wow, here's a strange mix. There are cards that I know I suck with and my opponents always seem to do better with than me (Watchtower, Baron). There are three Villages, then there are cards that I actually thought I was fairly good with but it seems maybe I'm not (Crossroads, Contraband, Pawn, Trade Route). The odd card that stands out is Kings Court. I always perceive that I am quite unlucky with Kings Court. I remember a lot of times getting to the pivotal turn of an engine mirror and drawing a hand like KC, KC, Silver, Chapel, Province. Obviously luck evens out in the long term, but maybe I have just been running very bad with KC and that is reflected in my stats. Or maybe I genuinely suck with it.
On this board I would build a Fishing Village/Watchtower engine, with some KC and Pawn thrown in for late-game fun.