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A pawn formation that resembles the Greek letter "λ". It commonly arises after the knight on f3 (or f6) is exchanged for the opponent's queen's bishop, resulting in doubled pawns. A well-known example occurs in the Trompowsky Attack, where Black aims for a kingside fianchetto. After Bxf6 and ...gxf6, the pawns on f6 and g7 form the characteristic λ-shaped pattern.
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It's a funny example of how double pawns can occasionally be advantageous. You get the strong control over e5, an open e file, potential of f5, all without even having to open the g1 a7 diagonal to the king. The only main problem is that it weakens d4. I remember other shapes like a box of pawns which can also be pretty advantageous, it's all pretty counter intuitive since I generally think "doubled pawn = bad"
It’s true that a double pawn can be an advantage if used effectively. I hadn’t been able to articulate the strengths of this pawn structure as well as you have, so your comment was very helpful. Thank you.
In one game, this position was reached from the Reti Opening.
Attached game
? vs ?
28 moves
Date: ????.??.??
Site: ????
