White to play and win |
1.b6? Ka8 [1..Kb8? 2.b7 +-] 2.b7 [2.Kc7 is stalemate already] 2..Kb8 and white has to play 3.Kb6 to protect his pawn, which will be stalemate.
So instead: 1.Kc7! Ka8 2.Kb6! [2.b6? is stalemate] 2..Kb8 3.Ka6 Ka8 4.b6 Kb8 5.b7 +-
White to play and win |
Very tricky 1.Kb6 is forced, but now after 1..Kc8 what can white do?
White to play and draw |
White's king is outside the square of the pawn, so it must move to the b-file, but which one? 1.Kb1 allows black's king to advance to b5 with no resistance. 1.Kb3 allows black to play 1..Kb5 with immediate opposition, so 1.Kb2! is the only move. 1..Kb6 [Distant opposition. 1..Kb5 2.Kb3! with opposition and in the square of the pawn] 2.Kc2! [Both kings are forced to move across their current ranks or else they allow the other to take the opposition. If you look where black's pawn sits, you will realise why black will fail to win] 2..Kc6 3.Kd2! Kd6 4.Ke2! Ke6 5.Kf2! Kf6 6.Kg2! and black's king cannot go to g6, so 6..Kg5 7.Kg3! with opposition and a theoretical draw
If these endgames are known to you, then you'll not need a board, and if you can follow them in your head, then cool. If you are struggling with them, then I recommend you play them out on a board, as they will teach you invaluable lessons in basic pawn endgames.
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