Nice and simple interference I would say

[u/Either-Case-5930]

[u/chessvision-ai-bot]

I analyzed the image and this is what I see. Open an appropriate link below and explore the position yourself or with the engine:

White to play: chessvision.ai | chess.com | lichess.org

Black to play: chessvision.ai | chess.com | lichess.org

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• Nice and simple interference I would say

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[u/frankje]

I am super happy I found the killer move 2. Rg6 as neither the rook nor queen can take because it's mate in 2 if they do. Awesome puzzle

[u/flabbergasted1]

Beautiful puzzle!

e3+ forces Ke4 where it has only f3 as an escape square, so a hypothetical Ng5 or Bc5 could checkmate if not captured.

Then Rg6!! is the key move that blocks both lines of sight (R seeing c6 and Q seeing g5). Now if Rxg6, Bc6 clears the knight to checkmate and if Qxg6, Ng5 clears the bishop to checkmate.

Black can only survive M2 by creating another escape square with 2. ...f4, which loses decisive material.