In this example there are only three different cards Five or lower on the board, so it is actually quite straightforward to spot the nut low. As in the previous case, it is simply a case of identifying the other two cards, Five or lower. Here the nut low is Hand B, using 5-2 to complete a wheel, 5-4-3-2-A. The best Hand A can do is a Six low, using 6-2 to make 6-4-3-2-A.
In this example anyone with a Trey together with another 'wheel card' (i.e. an Ace, Deuce, Four or Five) will make the nut low. Either A-3, 2-3, 4-3 or 5-3 will suffice to make the nut low, a Five low wheel (5-4-3-2-A). Hand A has a 5-3 for the nuts, whereas all Hand B can make is a Six low 6-4-3-2-A
As you can see, mistakes can and do happen in identifying low boards. Do not give up your cards unless you are completely satisfied that your hand has been declared correctly by the dealer.