No Chess Grandmaster is normal; they only differ in the extent of their madness.
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[Event "rated untimed match"]
[Site "Gothenburg"]
[Date "1920.??.??"]
[Round "?"]
[White "Maroczy, Geza"]
[Black "Bogoljubov, Efim"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "8/p7/2p5/1p1p1k2/1P1P2b1/P1P1K3/8/6N1 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ Note the potential move of a6 that will eventually be very important. } 1... Kg5 { The only winning move and an excellent one forcing white to either
give ground with its king or worse. } 2. Nf3+ ( { Giving ground allows black to
invade and eventually win white's backward pawns. } 2. Kf2 Kf4 3. Kg2 ( 3. Ne2+ Bxe2 4. Kxe2 Ke4 5. Kd2 Kf3 6. Kd3 Kf2 7. Kd2 a6 8. Kd3 Ke1 9. Ke3 Kd1 10. Kd3 Kc1 11. Ke3 Kc2 12. Kf4 Kxc3 13. Ke5 Kd3 14. Kd6 Kxd4 15. Kxc6 Kc4 16. Kb6 d4 17. Kxa6 d3 18. a4 d2 19. axb5 d1=Q { Black wins with a large material
advantage. } 20. b6 Qa4+ 21. Kb7 Kd5 22. Kb8 Qxb4 23. b7 Kc6 24. Ka8 Qxb7# ) 3... Ke3 4. Kg3 Be2 5. Nh3 Bc4 6. Nf2 Kd2 7. Kf4 Kxc3 8. Ke5 Kb3 9. Kd6 Kxa3 10. Kxc6 Kxb4 ) 2... Bxf3 3. Kxf3 Kf5 4. Ke3 Kg4 5. Ke2 Kg3 6. Ke3 a6 { This move
forces white to break opposition to black's king, and is the winning
resource. } 7. Ke2 Kg2 ( { A blunder allowing white to seize the opposition and
draw. } 7... Kf4 8. Kf2 Ke4 9. Ke2 Kf4 10. Kf2 Kg4 11. Kg2 { Draw. } ) 8. Ke3 Kf1 9. Kf4 ( { White can try: } 9. Kd3 Ke1 10. Ke3 Kd1 11. Kd3 Kc1 12. Ke3 Kc2 13. Kf4 Kxc3 14. Ke5 Kd3 15. Kd6 Kxd4 16. Kxc6 Kc4 17. Kb6 d4 18. Kxa6 d3 19. a4 bxa4 20. b5 a3 21. b6 a2 22. b7 a1=Q+ { Black wins with a large material
advantage. } ) 9... Ke2 10. Ke5 Kd3 11. Kd6 Kxc3 12. Kxc6 Kxd4 13. Kb6 Kc4 14. Kxa6 d4 15. a4 bxa4 16. b5 a3 17. b6 a2 18. b7 a1=Q+ { Black wins with a large
material advantage. } 0-1