Chess is 99 percent tactics.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown433"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "6k1/p5pp/1p2p3/8/2pPp3/2P1PPP1/P6P/6K1 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... b5 2. fxe4 ( { White can try: } 2. Kf2 b4 3. cxb4 c3 4. Ke2 exf3+ 5. Kxf3 c2 6. Ke2 c1=Q { Black wins with a large material advantage. } ) 2... b4 3. cxb4 c3 4. Kf2 c2 5. Ke2 c1=Q { Black wins with a large material advantage. } 0-1