Today, we will see a simple endgame pattern which is quite easy to remember but difficult to recognize over the board. As we will see in the following example, even a strong grandmaster failed to spot it; during the game, Black played 74…Ke4 and won on move no 237.
Laurent Fressinet (2650) against Alexandra Kosteniuk (2525) – Black to move
Question: Can you do better than Kosteniuk?
Hint: In the endgame, the easiest way to win is often to convert one advantage into another.
Solution: The easiest way to win this game is…
Black is preparing to exchange on f2 and transition into a winning king and pawn ending.
75. Rf4/Kg1 Rxf2!
Let’s check few alternatives
a) Rg7 then Rxf2 followed by Kf5 is winning
b) Kh1 then Rxf2 is just winning
c) Rc7 then Rxf2 followed by Bd4 is winning
76. Rxf2 Bxf2 77. Kxf2
Black has transitioned into a winning king and pawn ending.
Now Black can win the g3 pawn where the opposition doesn’t matter, as we know the very generous rule, “King on the 6th rank before the pawn always wins”.