Final position from Round One. Fresh from his victory in Canada, GM Bu Xiangzhi finds himself two pawns down against the young Norwegian. You can already surmise that Carlsen will be going for some kind of squeeze play to get one of his pawns to promote. But how? He played 84. f7 and Bu resigned. Let's take a look: 84...Re6 85. a7 and there's the squeeze play. Okay, what if Bu decided to shake things up in the south instead of taking the rook? Let's see, 84... Rh1+ 85. Re1 Rh8 86. Re8 Rh1+ 87. Kc2 Ra1 88. f8(q)+ and white wins.