Rg2! o.o

How absurd and clever is that!

If one rook captures the other pawn promotes, there is no way black can get out of that!

The continuation from here would be : Rxg2, f8=Q

And after rook takes pawn, Qf5+, forking the king and the rook!

Queen vs Rook is a win for white. (see Philidor's Position for more info)

For the password, what is the name of the unit to measure the advantage in chess?
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