5K2/2p5/8/2k5/8/2P5/4P3/8 w - - 0 1
Yancey, I studied your positions and I understood the difference between them. In the first variation the white queen could move to g5 with the check and in the second variation couldn't. The king blocked the way. Qg5 was the only move to win in the first variation.
Here are the two critical positions: 4Q3/8/5K2/8/8/2p5/3k4/8 w - - 0 1 and 4Q3/5K2/8/8/8/2p5/3k4/8 w - - 0 1. The first is a draw with best play, the second is a win for white with best play. Why?
Yes, but what was the critical difference- why did the pawn reach c2 in one line and not the other?
I considered your two lines 1.Kg7 Kd5 2.Kf7 and 1.Kf7 Kd5 2.Kf6.
They look similiar but they don't. In this varition 1.Kf7 Kd5 2.Kf6 only a draw because the black pawn reached c2. On the other hand in this varition 1.Kg7 Kd5 2.Kf7 the black pawn didn't reach c2 and it's a win. Although in both varitions the white queen on e8.
I meant, "where white has queened at e8". Alena, open this thread for an important message.