1338h4x Posted:

that’s why most people have never heard of it, duh

nobody uses it

Au contraire!

The en pbumant rule hardly comes up in games between beginners as they often “hang” pieces and the right of one pawn to pbum another hardly alters the result of the game.

Yet it is essential to the very backbone of chess: the pawn endgame. Let’s take a look at this example position:

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Black’s pawn is under attack and cannot flee: for if it were to move up two spaces it were to be taken en pbumant. Hence the position is lost for black. However, without the en pbumant rule, he could equalize:

1… f5

2.g6 f4

3.g7 f3

4.g8=Q f2

with a theoretical draw.