tutavb wrote:
In summary, for both, the max # of attempts is two, but you have more chances to solve in 1 guess, if you try B or D.
Regards!!
that's correct, but it's too advanced a consideration for anyone who is just becoming familiar with the concept of starting in the middle.
the advantage of starting with (b)/(d), versus starting with (c), is minuscule -- in the long run, it will save you only a couple of seconds per attempt -- and so isn't worth the confusion for most newbies.