One sad bishop

My friend FM Cecil Moncur is the first FIDE Master in the Bahamas and plays on their Olympiad team. We played a 15 10 four game match on ICC. I was still pumped after drawing IM Ray Kaufman in the rapid league quarterfinal and won the match 4-0. 

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NCM Vas Sladek (FIDE 2055) vs FM Cecil Moncur (FIDE 1826)

To avoid depression bishops require open diagonals but here all of Black's pieces are dominated by the White rook; another example of rooks on the seventh rank. It was easy to find the winning plan: Nb5 and Nd6 since the bishop isn't going anywhere. 

Take good care of your bishops!