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Ding,Liren - Giri,Anish
Bilbao Chess Masters, 28.10.2015
1.d4
Nf6
2.c4
g6
3.g3
c6
4.Bg2
d5
5.Nf3
Bg7
6.0-0
0-0
7.Qb3
Qb6
8.Nc3
Rd8
9.Na4
Qxb3
10.axb3
Na6
11.Bf4
Ne8
12.Nc3
Nac7
13.Ra5
Be6
14.Ra4
a6
15.Rfa1
h6
16.h4
Nd6
17.e3
Rac8
18.Nd2
f6
19.Ra5
dxc4
20.Bxd6
exd6
21.bxc4
f5
22.R5a4
c5
23.Ne2
Rb8
24.b4
b5
25.cxb5
Nxb5
26.bxc5
dxc5
27.Rxa6
cxd4
28.Nxd4
Nxd4
29.exd4
Bxd4
30.Rf1
Bb6
31.Re1
Bxf2+
32.Kxf2
Rxd2+
33.Kg1
Bf7
34.Ra3
Rbb2
35.Bf3
g5
36.hxg5
hxg5
37.Rae3
g4
38.Be2
Bd5
39.Bf1
Rh2
40.R1e2
Rh1+
41.Kf2
Rb1
42.Re1
Rb4
43.Re7
f4
44.Rc1
Rb2+
45.Ke1
Rb8
46.gxf4
Bg2
47.Kf2
Bxf1
48.f5
Kf8
49.Ree1
Rb2+
50.Kg3
Rh3+
51.Kxg4
Rb4+
52.Kg5
Rg3+
53.Kf6
Bc4
54.Rcd1
Bd3
55.Rc1
Bc4
56.Rcd1
Rb8
57.Rd7
Bb3
58.Ree7
Rc3
59.Rd6
Kg8
60.Rg7+
Kh8
61.Rg5
Rh3
62.Ke5
Bg8
63.Kf6
Rh6+
64.Rg6
Rh5
65.Ke5
Rb5+
66.Kf4
Rhxf5+
67.Kg4?
Ding Liren perhaps wanted to keep the K away from the enemy bishop but moving towards the edge of the board is rarely a wise policy when defending pawnless endgames. [The tablebase says that after 67.Ke4
which is the best move, "Black mates in 67" with the first capture occurring at Black's 50th move. This means that with perfect play Black can win but in practice White should be able claim a draw under the 50 move rule if he is keeping score.
White's first move in the ending has already made his opponent's task easier: now mate in "only" 55 moves.] 67...Rf1?
It is of course very hard for a human to play such an ending. Nevertheless it is somewhat surprising that Anish Giri did not seek to improve his bishop's position.
According to the tablebase only two moves are sufficient to retain the win here. [67...Bf7
was by far the best move according to the tablebase. The g6-R is very short of squares. 68.Rgf6
(68.Rh6+?
Kg7
and now it's only 32 moves to mate.) 68...Rg5+
69.Kf4
Kg7
70.Rb6
Ra5
71.Ra6
Rae5
White cannot propsoe a rook exchange here, and after 72.Rfb6
Ref5+
73.Ke3
Bg6
(73...Rg3+
74.Ke4
Bg6
75.Rd6
Kh6
Black is gradually improving the position of hsi pieces and their coordination.) ; 67...Kh7
wins in 123 moves!] 68.Rh6+?
[68.Rb6!
is the unique drawing move.] 68...Kg7
69.Rdg6+
Kf7
70.Rb6
Re5
71.Rhc6?
A serious mistake; now Black can mate in only 27 moves. [71.Rb7+
is best to force the king to the back rank, after which mate should take 61 moves.; 71.Ra6
is almost as good and several other moves are much better than the text.] 71...Re7?!
Giri protects his second rank but this is only the third best move. [71...Ke7!
reduces the task to 27 moves says the tablebase (considerably faster than the ChessBase notes said). White can check the king to the back rank but soon afterwards Black will give a bishop check and drive the king to the fatal edge. 72.Rc7+
Kd8
73.Rcc6
(73.Rg7
soon loses material: 73...Be6+
74.Kh4
Rh1+
75.Kg3
Rg1+
76.Kf4
Rf5+
77.Ke4
Rxg7
etc.) 73...Kd7
74.Rd6+
Ke7
75.Rd2
Be6+
76.Kg3
Rg5+
77.Kh2
Bd5
78.Re2+
Kd7
when Black threatens mate on the move and the useful checks are at an end.] 72.Rc3
Kg7
Now it is mate in 44. 73.Rbc6
Be6+
74.Kg3
Bd7
75.Rd6
Be8
76.Rf3
Rfe1
77.Rd2
Bc6
78.Rc3
Rg1+
79.Kh2
Rh1+
80.Kg3
Rh6
81.Rd4
Re2
82.Rg4+
Kf7
83.Rcc4
Rg2+
84.Kf4
Rf6+
85.Ke5
Re6+
86.Kf5
Rge2
87.Rgf4
Rg6
88.Rcd4
Re7
89.Rh4
Bd7+?!
A bad slip. [89...Rf6+
As many commentators pointed out, 90.Kg5
Re5+
91.Kg4
Kg7
92.Rc4
Bd5
Black's coordination is excellent again, denying checks and forcing White into a tight corner. 93.Rd4
Rf1
94.Rd3
Kg6
95.Kh3
Rg5
threatening mate on h1 96.Rg4
(96.Rd2
Rh1+
97.Rh2
Bg2#
) 96...Be6
winning the exchange, after which the end will come soon. 97.Rd6
Rxg4
98.Rxe6+
] 90.Kf4
Rf6+
91.Kg3
Re3+
92.Kh2
Re2+
93.Kg3
Re3+
94.Kh2
Bf5
95.Kg2
Kg6
96.Kf2
Rc3
97.Rhf4
Rc2+
98.Kg3
Re6
99.Rd8
Ree2
100.Rg8+
Kh7
101.Rd8
Be6
102.Rdd4
Kg6
[102...Rg2+
is the quickest route to a win (29 moves).] 103.Rfe4
Rg2+
104.Kf4
Rgf2+
105.Ke5
Bf5?!
A win is still possible to force (but for the 50-move rule) but [105...Rc6
or 105...Rf6 were better.] 106.Re3
Ra2
[106...Rc5+
is six moves faster (34 moves).] 107.Rd6+
Kg5
108.Rg3+
Bg4?
Now White can force a draw thanks to the pin on the bishop. [108...Kh4!
is clearly best, attacking the rook, and Black could mate in 38 moves.; 108...Kh5
also preserves the win but is much slower.] 109.Rd4!
This will lead to a forced exchange of rooks in order to preserve the bishop. 109...Ra5+
110.Kd6
Ra6+
111.Kc5
Rf5+
112.Kb4
Rb6+
113.Kc4
Rc6+
114.Kb4
Rf4
115.Rxf4
Kxf4
116.Rc3
Now it is a drawn rook and bishop against rook ending. Giri tried to win but Ding defended well. 116...Rg6
117.Rc4+
Ke5
118.Rc5+
Kd6
119.Rc4
Be6
120.Rd4+
Bd5
121.Kc3
Ke5
122.Rd3
Rc6+
123.Kd2
Be4
124.Rc3
Rh6
125.Ke2
Rf6
126.Ke3
Rf8
127.Ke2
Kd4
128.Ra3
Bc2
129.Rh3
Rg8
130.Kf3
Be4+
131.Kf4
Rf8+
132.Kg5
Ke5
133.Rg3
Bf3
134.Kh4
Ke4
135.Rg7
Rf5
136.Kg3
Ke3
137.Rg8
Rh5
138.Rg7
Be4
139.Rg8
Rh1
140.Rg5
Rf1
141.Kg4
Bf3+
142.Kf5
Kd4
143.Ke6
Rh1
144.Rg6
Be4
145.Rf6
Rh8
146.Kd6
Ra8
147.Ke7
Ra5
148.Rd6+
Bd5
149.Kf6
Ra7
150.Kf5
Re7
151.Rf6
Re1
152.Kg5
Be6
153.Kf4
Re3
154.Rf8
Bd5
155.Rf6
Re1
156.Kf5
Re5+
157.Kf4
Be6
158.Kf3
Re3+
159.Kf4
Re4+
160.Kf3
Bg4+
161.Kg3
Ke3
162.Rg6
Bf3
163.Rg5
Ra4
164.Re5+
Be4
165.Kg4
Ra1
Ding could have claimed the draw now but was perhaps afraid of miscounting; an incorrect claim
would have given two minutes extra to hois opponent. So he played a few more moves to be certain. If he had never claimed the arbiter would have been able to step in after 75 moves (move 190) to declare the game drawn. 166.Rg5
Rf1
167.Kh4
Bf5
168.Rg3+
Kf4
169.Rg4+
Ke5
170.Rg3
Kf6
171.Ra3
Rg1
172.Ra4
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