1.Rb2!

[1.d7?? Nf5+! 2.Ke6 b2+–+]

1...Qxb2

2.d7 Ne6!

[2...Nf5+ 3.Ke6 Ng7+ (3...Bf6 4.Kxf6+-)

4.Kf7/Kd5 Ne6! 5.Kxe6+- see mainline]

3.Kxe6 Bf6!

4.Kxf6 d3+

5.Nc3 self-pin and unpin of the bRb4

5...Rd4 unpin of the wNc3

6.Nd5+ Kxa4

7.Qa5+! Kxa5

8.d8Q+ Phoenix

8...Ka4 9.Qa8# model mate