This is an easy push, no?
PokerStars Tournament, Big Blind is t200 with t25 antes (4 handed)
Converter on pregopoker.com
CO (t5985)
Hero (t1620)
SB (t2950)
BB (t2945)
Preflop: Hero is in Button with A[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/diamond.gif[/img]
<font color="red">CO raises to t400</font>, <font color="red">Hero raises to t1595 (All-in)</font>
edit: I should add that with his stack size and the way he's been betting, I'm putting villain on a fairly wide range here, and most likely trying to pick up the blinds. I'm very shortstacked and the blinds are about to go up to 200/400.