8/k7/8/8/8/7P/2r5/1R5K w – – 0 1

# The Toughest R+P Ending I Know

Can you find white's winning plan without consulting the tablebase? This the toughest R+P vs R ending I have seen.

I had to work out a few variation to understand why they don't work before I could find the first move. I considered Rg1, h4 and Rb5. After that I could understand the main idea of this puzzle.

1.Rb4! Ka6

2.h4 Rc1+

3.Kg2 Rc8

4.Kh2 Ka5

5.Rb3 Ka4

6.Rh3 Kb5

7.h5 Rh8

8.h6 Kc5

9.Kg3 Kd6

10.Kf4 Ke7

11.Kg5 Rg8+

12.Kh5 Rh8

13.Rc3 Ke6

14.Rc7 Ra8

15.h7 Kf6

16.Kh6 Rd8

17.Rb7 Ra8

18.Rb3 Kf5

19.Rf3+ Ke4

20.Rf7 Ke5

21.Kg7 Ke6

22.Rf8 Ra7+

23.Kg6 Ra2

24.h8=Q Rg2+

25.Kh7 Rh2+

26.Kg8 Rxh8+

27.Kxh8 Kd5

It's a winning position for white.

The idea is actually quite simple. But it is difficult for amateurs to understand the move sequence. This is a very good exercise to learn R & P endgame.