A Tough Ending Problem

Can you figure out how white draws this position?

B7/1n6/2k5/6P1/1Kp4p/3p3R/2r3b1/7R w - - 0 1

Comments
No. 1-7
Yancey_Ward
Yancey_Ward

Editor

Well done.

Alena
Alena

V-1

1.R3h2! Bxh1
2.Rxh1 d2
3.Bxb7+ Kxb7
4.Rd1 c3
5.g6 Rc1
6.g7 c2
7.g8=Q Rb1+
8.Ka5 cxd1=Q
9.Qd5+ Kc7
10.Qc5+ Kd7
11.Qd5+ Ke7
12.Qe5+ Kf7
13.Qf5+ Kg7
14.Qg5+ Kh7
15.Qf5+ Kh6
16.Qf6

Here the black h-pawn comes in handy.It protects from escaping the black king.
There are a lot of perpetual checks. It's a draw.

V-2

1.R3h2! Bxh1
2.Rxh1 d2
3.Bxb7+ Kxb7
4.Rd1 c3
5.g6 Rc1
6.g7 c2
7.g8=Q cxd1=Q
8.Qd5+ Rc6
9.Qd7+ Kb6
10.Qd8+ Ka7
11.Qd7+ Kb6
12.Qd8+ Kb7
13.Qd7+ Rc7
14.Qd5+ Ka7
15.Qd4+ Ka8
16.Qd8+ Kb7
17.Qd5+
It's a draw.

Yancey_Ward
Yancey_Ward

Editor

Yes.

Alena
Alena

It's because of Rb1+.

Yancey_Ward
Yancey_Ward

Editor

However, before looking at the tablebase, do consider black's options after 6.g8(Q) to understand why black can win. It is important in finding the solution.

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