prove higher level thinking to me

[alphatmw]

find any hand posted wherever or post a new hand in which it is demonstrated that one of the players used level 4 thinking or higher.

level 0: what do i have?
level 1: what does my opponent have?
level 2: what does my opponent think i have?
level 3: what does my opponent think i think he has?

level 2 is used fairy often, i see level 3 demonstrated pretty infrequently, but i've never seen an example of level 4. i honestly don't believe it exists, except maybe used in <0.1% of hands played.