Shankland vs Duda - 9th Hainan Danzhou GM 2018 - Round 4

Just one day after Shankland’s first loss of 2018 He bounces back with a win over the Polish Champion.

While playing through the game, scroll slowly so that when you get to the two questions you can put some time on the clock (ten to fifteen minutes) and try and find the solution.

Shankland,Samuel L (2727) - Duda,Jan Krzysztof (2737)

9th Hainan Danzhou GM 2018 Danzhou (4), 30.07.2018

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be3 Be7 7.f3 0–0 8.Qd2 Nc6 9.0–0–0 d5 10.Be2 dxe4 B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack [10...a6 11.Kb1 Qc7 12.exd5 Nxd5 13.Nxd5 exd5 14.Nb3 Rd8 15.Bg5 d4 16.h4 Be6 17.Bd3 a5 18.Bxe7 Qxe7 ½–½ (34) Giri,A (2752)-Van Wely,L (2657) Amstelveen 2017] 

11.Nxc6 bxc6 12.Qxd8 Bxd8 13.Nxe4 Nxe4 14.fxe4 Bb6 15.Bxb6 axb6 

XABCDEFGHY
8r+l+-trk+(
7+-+-+pzpp'
6-zpp+p+-+&
5+-+-+-+-%
4-+-+P+-+$
3+-+-+-+-#
2PzPP+L+PzP"
1+-mKR+-+R!
xabcdefghy

16.Kb1N [16.a3 Ba6 17.Bxa6 Rxa6 18.Rd6 ½–½ (67) Valutanu,M (2645)-Stull,N (2576) ICCF email 2011] 

16...Ba6 17.Bxa6 Rxa6 18.Rd6 Rfa8 19.Rhd1 g5 20.Rxc6 Rxa2 21.c4 R2a4 22.Rd7 g4 23.h3 [23.Rcc7!?] 

23...h5 24.hxg4 hxg4 25.Rd3 Kf8 26.Kc2 b5 [26...R8a5= remains equal.] 

27.cxb5 Rxe4 28.b6 Rb8 

XABCDEFGHY
8-tr-+-mk-+(
7+-+-+p+-'
6-zPR+p+-+&
5+-+-+-+-%
4-+-+r+p+$
3+-+R+-+-#
2-zPK+-+P+"
1+-+-+-+-!
xabcdefghy

29.Rb3 Does White have a stronger option here? 

00000

[White should play 29.Kc3!± ] 

29...Ke8 [29...Ke7!²] 

30.Kd3! Ra4? 

XABCDEFGHY
8-tr-+k+-+(
7+-+-+p+-'
6-zPR+p+-+&
5+-+-+-+-%
4r+-+-+p+$
3+R+K+-+-#
2-zP-+-+P+"
1+-+-+-+-!
xabcdefghy

What should Black have played instead of 30...Ra4? 

00000

[30...Rf4± was called for.] 

31.Rc7! Ra6? [31...e5 32.Ke3 (32.b7 Rd4+ 33.Ke3 Rd7+-) 32...Rd4] 

32.b7 Rd6+ 33.Kc4 Rdd8 34.Rd3 1–0