The game of chess is not merely an idle amusement. Several very valuable qualities of the mind, useful in the course of human life, are to be acquired or strengthened by it.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Teschner"]
[Black "Portisch"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "k1r1r3/pp5p/1q6/3R1Np1/1b6/1P3P2/2Q1R1PP/7K b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Qf2 2. Ng3 ( { White can try: } 2. Rd1 Qxe2 3. Qxe2 Rxe2 { Black wins with
a large material advantage. } ) 2... Qe1+ 3. Rxe1 Rxe1+ 4. Nf1 Rxf1# 0-1