I was playing some bridge on BBO in a pick up team game on Christmas Day after breakfast and opening some presents. Our partners at the other table showed they were into the Christmas Spirit, or that could be said Spirit's. Someone on this board was going to get a great result.
Here is the hand at our partners table
As can be seen, there are a lot of IMPS available both directions on this. The opening lead was the J of Hearts, and after thinking about this a min, W played low. N now proceeded to take all 13 tricks in 3N XX, for +2600. If W goes up with the A of Hearts and plays the Q of Spades, then the result is -2200, so a swing of 4800 on the play to the first 2 tricks.
This did not totally decide the match, there were lots of other fun swings, but this was the largest :)
Happy holidays to all