Section A2 – Draw
1.Bd6+
( 1.Qxc8?! Qf1+!
( 1…Qxc8? 2.Bd6+ Ka4 =, quiet )
2.Kxc2 Nd4+ -+ )
1…Ka4 2.Rb4+
( 2.Qxc8?! Qf1+! 3.Kxc2 Nd4+ 4.Kc3 Qc1+!
( 4…Nxb5+? 5.Kb2 Bd4+ 6.Kc2 =, quiet )
5.Kd3 Qxc8 6.Rb4+ Ka5 7.b7 Qc2# )
2…Qxb4 3.Qd7+ Qb5 4.Qa7+!
White prefers to exchange on the adjacent square.
( thematic try 4.Qxb5+? Kxb5 5.b7 Rh8! 6.Ng5! Ne1! change of try and main line
( 6…Nd4? 7.b8=Q+ Position B with bKb5 – with check! 7…Rxb8 8.Bxb8 Kc4 9.Ne4 =, quiet
( 9.Ne6 )
)
7.b8=Q+ Rxb8 8.Bxb8 Bc5!
( 8…Kc4? 9.Nf3! Kb3 10.Nxe1 Bxe1 11.Bf4 =, quiet )
9.Be5 Position A1 with bKb5 – there is a move 9…Kc4! 10.Ne6 Bf2! 11.Kb2
( 11.Bf4 Kb3! -+ )
11…Kd5 12.Bc3 Kxe6 13.d4 Be3 -+ )
4…Qa5 5.Qxa5+
( try 5.Qd7+? Kb3! 6.Qf7+ Rc4
( 6…Ka4? 7.Qa2+ Kb5 8.Qxa5+ Kxa5 9.b7 to main line )
7.Qxf3+ Ka2 8.Qd3 Qa4 9.b7 Ba7 10.Ng5 Rd4!
( 10…Qb3? 11.Qxb3+ Kxb3 12.Ne6 =, quiet
( 12.Nf3 )
)
( 10…Bb8? 11.Nf7 Bxd6 12.Nxd6 Rb4 =, quiet )
( 10…Rh4? 11.Qxc2+ Qxc2+ 12.Kxc2 Rc4+ 13.Kd1 Rg4 =, quiet )
11.Qc3 Qb3 12.Qxc2+ Qxc2+ 13.Kxc2 Rxd6 -+ )
5…Kxa5 6.b7 Rh8! 7.b8=Q
( thematic try 7.Ng5? Nd4!
( 7…Ne1? change of try and main line 8.b8=Q Rxb8 9.Bxb8 main line )
8.b8=Q Position B1 with bKa5 – without check! 8…Rh1+ -+ )
7…Rxb8 8.Bxb8 Ne1 9.Ng5 Kb4
Black changes the plan.
( 9…Bc5 10.Be5 Position A with bKa5, Black is forced to play 10…Ka4 11.Ne6!
( 11.Bb2? Kb3 -+ )
11…Ba3+ 12.Bb2 Kb3 13.Nd4+
( 13.Bxa3? Nd3# )
13…Kc4 =, quiet )
10.Nf3!
( 10.Ne4? Bd4 11.Bg3 Kb3! 12.Bxe1 Bb2# )
10…Kb3! 11.Nxe1 Bxe1 12.Bf4
( 12.Bd6? Bf2 13.Bb4 Bd4 14.Bc3 Bc5
( 14…Bxc3? 15.dxc3 Kxc3 =, quiet stalemate )
15.Bb2 Bf8 16.Bh8 Ba3+ 17.Bb2 Bxb2# )
12…Bh4 13.Bg5! Bg3 14.Bf4! Bf2 15.Be3 Bh4 16.Bg5 Bxg5 =, quiet
ideal stalemate with Pawn-pin
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