Issue 65 of the German magazine Problem Forum (study section) March 2016.

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Studies in this article:

[Event "210 1.p Doré-75 JT"] [Site ""] [Date "2008"] [Round ""] [White "Pervakov=O"] [Black "(+0004.31d8g5)"] [Result "1-0"] [SetUp "1"] [FEN "3K2n1/7p/8/5Pk1/7N/7P/6P1/8 w - - 0 1"] [PlyCount "17"] [EventDate "2008"] 
 {EG#16597} 1. g3 $1 Kf6 (1... Nh6 2. Ke7) (1... h5 2. Ke8 $1 Nf6+ 3. Kf7 Ne4 4. Ke7 Nf6 (4... Nxg3 5. f6) 5. Ke6) 2. Ke8 (2. g4 $2 h5 3. Nf3 (3. gxh5 Kg5 4. Nf3+ Kxf5) 3... hxg4 4. hxg4 Nh6 $1 5. g5+ Kxf5 6. gxh6 Kg6) 2... h5 (2... Ne7 3. g4 Nd5 4. Nf3 h6 (4... Nf4 5. Nd2 $1 Nxh3 6. Ne4+ Ke5 7. f6 Nf4 8. f7 Ng6 9. Ng3 Kf4 10. Nf5 Kxg4 11. Ne7) 5. Nd4 Nc3 6. Kf8 Ne4 7. Kg8 Ng3 (7... Nf2 8. Ne6 $1 Nxh3 9. Nf8 Kg5 10. Nh7+ Kxg4 11. f6 Nf4 12. f7 Ng6 13. Kg7) 8. Kh7 h5 9. Kh6 hxg4 10. hxg4 Ne4 11. Kh5 Ng3+ 12. Kh4) (2... Nh6 3. g4 Nf7 4. Ng2 h5 5. Ne3 Nd6+ (5... hxg4 6. Nxg4+ Kg7 7. Ke7) 6. Kd7 Ne4 7. gxh5 Kg5 8. h6 $1 Kxh6 9. h4 Kh5 10. Ng2 Kg4 11. Ke6) 3. Ng2 $1 (3. Ng6 $2 Nh6 4. Ne7 Kg7 $1 5. h4 (5. Kd8 Kf6 6. Kd7 h4 $1 7. g4 Nxg4) 5... Kf6 6. Kf8 Ng4) 3... Kxf5 (3... Nh6 4. Ne3 h4 5. gxh4 Nxf5 6. Nxf5 Kxf5 7. Kf7) (3... Ne7 4. Ne3 Nc6 5. Nd5+ $1 Kxf5 6. Ne7+ Ke4 (6... Nxe7 7. Kxe7 h4 8. g4+) 7. Nxc6 Kf3 8. g4 hxg4 9. Ne5+ Kf4 ( 9... Kg3 10. hxg4 Kf4 11. Kf7) 10. Nxg4 Kg3 11. Nf2) 4. Kf7 Nh6+ (4... Nf6 5. Nh4+ Kg5 6. Nf3+ Kf5 7. Nd4+ Ke5 8. Kg6 Ne4 9. Ne2 Nf2 10. h4 Ke4 11. Kxh5 Kf3 12. Kg5 $1 Ne4+ 13. Kg6 Kxe2 14. h5) 5. Kg7 Ng4 6. Nh4+ $1 Kg5 7. Nf3+ Kf5 8. Nd4+ Kg5 9. h4# 1-0