1.Sf2+
[1.exd3?
Sce3+
2.Sxe3
Sxe3+
-+; 1.Rxg5?
dxe2+
2.Ke1
(2.Kxe2
Sce5+
3.Kd2
Sf3+ -+) 2...Sce5
3.Sf2+
Sxf2
4.Kxf2
(4.Rxe5
Sd3+ -+) 4...e1Q+
5.Kxe1
Sf3+
-+] 1...Sxf2
2.Rxg5
[2.Kxf2?
Sd6
3.Rxg5
Se4+
-+] 2...Sd2+
[2...Sh3
3.Rg3
=; 2...Sg4
3.exd3
=] 3.Ke1
dxe2
[3...Sde4
4.Rh5+
Kg2
5.exd3
=] 4.Rg3!
Bb5
Main B) [Main A) 4...Sfe4
5.Re3
(5.Ra3?
Bc4
6.Re3
Kg1 zz 7.Rxe4
Sf3#
) 5...Kg1
6.Ra3
Bb5
7.Rb3
Bc4
8.Re3
zz 8...Kh1
9.Rxe4
Sxe4
stalemate] 5.Re3
Kg2
[5...Sf1
6.Re7
=] 6.Kxd2
Kf1
7.Re7
zz [7.Re6?
Sg4
8.Re7
Sh2
-+; 7.Re5?
Bc4
zz 8.Re8
Sh3
9.Rf8+
Kg2
10.Rc8
(10.Re8
Sg1 -+) 10...Bd3
11.Rc1
Ba6
12.Rc6
Kf1
13.Rf6+
Sf2
14.Re6
Sg4
-+] 7...Sg4
(Nh3)
8.Rf7+
Sf2
9.Re7
Ba6
10.Re8
zz 10...Bc4
11.Re5
zz 11...Bd3
12.Re3
zz 12...Sg4
13.Rf3+
Sf2
[13...Kg2
14.Rf7
(Rf8) 14...Sh2
15.Re7
=] 14.Re3
=