Power of the Rook.63....Rxe4+In this endgame,Black decided to liquidate to a Rook vs Bishop + Knight endgame. And Black'sadvantage here is huge for 2 reasons: 1. They have an extra pawn on theKingside that can become a passer. 2. White's minor pieces lack real targets.Practically, it's a very hard position to hold for White.64.Kxe4g565.Bf5...65.hxg5+Kxg566.Ke3Kh467.Be6Kg365....gxh466.Nf4Rg867.Ne2Kg568.Nf4Kh669.Ne2Rg270.Kf3Rh2