Let's Make Robots!

need some advice on my start here robot

hey guys,

well...i think i broke something on my picaxe, i was trying to make the start here robot but as its my first time with electronics and soldering i guess something went wrong...

everything runs nice except my left wheel, i first thought the motor was broken but after some tryings it seems that  the hole just next to the letter 'B'  doesnt work at all (the other B hole, the one next to the edge of the cards works fine).

Soldering was quite painful to me so i guess i burnt something :/