This is from an actual OTB tournament game between a 1523 (White) and a 1393(Black).

Black drew after 1...Kc6 2.Ka7 Kc7 3.Ka6 Kc6 4.Ka7 Kc6 5. Ka6 6.Kc6 and draw by three-fold of the same position.

Yeah, why on earth would white play 3. Ka6 when a6 puts black in zugzwang.

I don't understand a 1500 player playing that at all.

After 1...g5 2.Kb6 g4 3.a6 g3 4.a7 g2 5.a8=Q g1=Q+, 6.Kxb5 Black has to go for perpetual check

The primary reason that Black wins in this position is the fact that he can reach the pawn impasse on the b4 and b5 squares first. This is commonly called a trebuchet position I thin and whoever can connect the king to the pawns wins the pawn here.

Also as an FYI, Black has the win in hand 1 move earlier by simply play Qxa8+ after Qa1+ as the King will still have to take though other than that, Yeres has the correct solution here.

These are best play for both sides.

The game is a draw -

@condude2

Could you do me a favor and run the position through an analysis engine and provide the evaluations to this? I am not sure that all of Whites plays in this line are best move refutations to achieve drawing position.

TY

Comment deleted. 

Please COMMENT #12 of IM Pfren which refutes my analysis with 6.Kxb5.

IM Pfren's 6.Kxb5 cooks the whole idea of even winning for Black.

@PortlandPatzer and Yeres

Good point, my analysis is flawed.  Thanks for correcting me.