Talk:Interference (chess)
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[edit] Crushing indeed
Rxd8 is indeed crushing for Black -- it threatens Rh8# in one more move, failing Ng7 and possibly a subsequent Bxg7 and Kxg7. White's material disadvantage is gone and black is on the defensive; White can withdraw the offered knight after Black addresses the mate threat (and maybe completes the exchange on g7).
The alternative is no better -- R2xd5, a8=Q turns White's four point disadvantage into a one point advantage in material, and with a queen and rook versus two rooks, likely leads to a slightly slower checkmate.