No Chess Grandmaster is normal; they only differ in the extent of their madness.
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[Event "rated untimed match"]
[Site "Budapest"]
[Date "1934.??.??"]
[Round "?"]
[White "Frydman"]
[Black "Vidmar"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "2rq1rk1/3bbppp/p3pn2/1p1pN3/2nP1B2/P1NBP2Q/1P3PPP/2R2RK1 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ A classic overloading of pieces tactic. } 1. Nxd5 exd5 ( { Black can try: } 1... g6 2. Nxe7+ Qxe7 3. Bxc4 bxc4 4. Bg5 Bb5 5. Qh4 Rfe8 6. Bxf6 { White wins
with a large material advantage. } ) 2. Nxd7 { The knight on f6 is overloaded.
It cannot recapture on d7 and protect h7 at the same time. } 2... Qxd7 3. Bxh7+ { Black's knight on f6 is overloaded. It cannot protect both h7 and d7. } 3... Kh8 4. Bf5+ Kg8 5. Bxd7 Nxd7 6. Qxd7 Bf6 { White wins with a large material
advantage. } 1-0