11-7-4-2-1 in action

I was just commenting on the Seniors Camrose on BBO and watched Paul Hackett open 1D (2nd seat, vul vs not) on the hand below:

♠	K Q J 6
♥	7 5 2
♦	K 9 5 4
♣	Q 3

That's 11 HCP on the 4-3-2-1 scale and only 9.6 on the 11-7-4-2-1 scale (7+7+4+4+2=24 * 4/10 = 9.6). That's before adjusting for the doubleton queen. The spades are worth a bit extra due to the honours working together, but still the hand is clearly weaker than an average 10 HCP when evaluated correctly. The Kaplan/Rubens hand evaluator calls it 9.75.

Most players wouldn't open the hand anyway, but I think most would wrongly invite game opposite a weak notrump.

The full deal is below, though it doesn't really prove much as South has a good hand and North's gets better when South bids clubs so the values for game are there. Only the misfit in diamonds and hearts makes it poor.

		♠	K Q J 6
		♥	7 5 2
		♦	K 9 5 4
		♣	Q 3
♠	8 4			♠	10 5 2
♥	K Q J 9			♥	A 6 3
♦	10 8 2			♦	A Q J 7 6
♣	9 5 4 2			♣	10 6
		♠	A 9 7 3
		♥	10 8 4
		♦	3
		♣	A K J 8 7