Strategy requires thought, tactics require observation.
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[Event "World Cup Tournament"]
[Site "Tromso, Norway"]
[Date "2012.??.??"]
[Round "?"]
[White "Nikita Vitiugov"]
[Black "Alexander Morozevich"]
[Result "1-0"]
[BlackElo "0"]
[FEN "8/4Pb2/1p2R3/3P2k1/p3B3/8/3r4/6K1 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ Since the objective is to get rid of the Bishop, Rg6+ is less effective. } 1. Bg6 ( { White can try: } 1. Rg6+ Bxg6 2. Bxg6 Re2 3. d6 a3 4. Bf7 Kf6 5. Ba2 b5 6. Kf1 Re5 7. Kf2 b4 8. Bc4 Re4 9. Kf3 Rxe7 10. dxe7 Kxe7 { Draw. } ) ( { White
can also try: } 1. d6 a3 2. Re5+ Kh6 3. Bd5 Be8 4. Rf5 a2 5. Bxa2 Rxa2 6. Rf8 Bc6 7. e8=Q Bxe8 8. Rxe8 Rd2 9. d7 Rxd7 10. Re6+ Kg5 11. Rxb6 { Draw. } ) 1... Bxe6 2. e8=Q { White wins with a large material advantage. } 1-0