barmar, on 2018-October-04, 09:05, said:
Wouldn't it be simpler and more effective to just wait until you see who's sitting where at the beginning of the event, and then choose your seat appropriately? If you see another strong player sitting North, don't put your weak partner in that seat. Rotating the board for just a single hand won't gain you nearly as much.
But I suppose if there's a mix of strong and weak players in the North seats, the best you can do is try to get the advantage on a board you have some suspicion will be tricky for partner.
Anyway, if the TD has good reason to believe that the Chimp did this intentionally, based on extraneous information, I believe that's outside the scope of the laws we're discussing. They're not intended to address intentional cheating, just failing to be careful in certain circumstances.
I think you are completely missing the point, Barry. There are two distinct situations where rotating the board gains. Firstly, you should always sit North, as you have control of the board and it is usually passed to you. If you see South at the helm on the previous table (even if he is Garozzo) you rotate the board through 180°, vastly increasing your chance of playing the hand.
Secondly, if you did not see who was declarer at the previous table, then as North you should rotate 2, 3, 6, 7, 10, 11, 14, 15, 18, 19, 22, 23, 26, 27, 30 and 31, a list which ChCh recited without pause for breath. This guarantees you will get to call before your hapless partner has a chance to open 1NT.
The Chimp boasted that ruthless rotation of all the boards in this list that you are due to play, in conjunction with careful vigilance of the previous table was worth around 20% per session, but then he said "I am joking, of course!"
I prefer to give the lawmakers credit for stating things for a reason - barmar