1.f6+ Kd6

2.f7 Rxg5+

3.Kf6 Rf5+!

[3...Bxg2 4.f8Q++-;

3...Rg6+ 4.Kxg6 Be8 5.Ne4+ Kxc7 6.Bxe5++-]

4.Kxf5 Ke7 5.Rb2

[5.Kg6? Bxg2 6.Kg7 Qf1=]

5...Qc4!

[5...Qf1+ 6.Rf2 Qh3 7.Kg5! Bf3 8.Nxe5 Qg3+ 9.Kf5 Qxf2 10.Ncd3+-;

5...Qxc5 6.Bb4+-]

6.f8Q+! Kxf8

7.Ne6+

[7.Rb8+ Ke7=]

7...Ke8

[7...Ke7 8.Bb4+ Kf7 9.Nxe5++-]

8.Rb8+

[8.Ng7+ Kf8 9.Ne6+ (9.Rb8+ Kxg7=) 9...Ke8]

8...Nc8!

[8...Ke7 9.Bb4+ Qxb4 10.Rxb4+-]

9.Rxc8+ Ke7 10.Re8+!

[10.Bb4+? Qxb4 11.Re8+ Bxe8 12.c8N+?? (12.c8Q=) Kd7–+

(12...Kf7?? 13.Nh6#) ]

10...Bxe8

11.c8N+!

[11.c8Q?? Bg6+!–+]

11...Qxc8

12.Bb4+ Kd7

[12...Kf7 13.Nh6# echo mate with self-block]

13.Nxe5# ideal mate with two self-blocks