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 "Unknown426"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "3r2k1/Q2P1ppp/1B2r1q1/5b2/1P2nP2/P6P/6BK/3RR3 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Qg3+ 2. Kg1 Bxh3 3. Re2 Nc3 4. Rf2 Nxd1 5. Qb7 Nc3 { NxR also wins. } 6. Bxd8 Re1+ 7. Rf1 Ne2+ 8. Kh1 Rxf1+ 9. Bxf1 Qg1# 0-1