One of the most important things in chess is pattern recognition: the ability to recognise typical themes and images on the board, characteristics of a position and their consequences.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown23"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[ECO "A02"]
[FEN "5r1k/1p1q2b1/6pp/4pp2/8/2QPP1PN/r4PKP/1R3R2 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ A pawn's story. } 1... f4 2. Ng1 ( { White can try: } 2. exf4 exf4 3. Qe1 f3+ 4. Kg1 Qxh3 5. Ra1 Qg2# ) ( { White can also try: } 2. gxf4 exf4 3. Qc5 Qg4+ 4. Kh1 Qxh3 { Black wins with a large material advantage. } ) 2... fxe3 { The f2 pawn is
three times attacked, only twice protected, and pinned. It is not long for
this world. } 3. Qc4 Rfxf2+ 4. Rxf2 Rxf2+ 5. Kh1 Qf5 6. Qe4 Qxe4+ 7. dxe4 Bf8 8. Rxb7 e2 9. Rb1 Rf1 10. Kg2 e1=Q 11. Rxe1 Rxe1 12. Kf2 Rxe4 { Black wins
with a large material advantage. } 0-1