Riga World Cup 2023 fragments
Below a number of interesting fragments of the games in Riga can be found.
After
2-7? Slump won using an elementary combination:
20.34-30
24x35
21.33-29
23x34
22.27-22
18x27
23.32x21
16x27
24.28-23
19x28
25.38-32
27x38
26.42x2
After
48.36-31?
17-21! Hageman won the game with the combination
49.31-26
22-27!
50.26x17
14-19
51.32x21
18-22
52.17x28
23x45. A narrow draw for white was still possible after
≡
48.40-34
17-21
49.34-30
14-19
50.30-25
22-27
51.35-30
24x35 and now the unexpected defense
52.39-34!
19-24
53.33-28!
13-19
54.28-22! and black can't win.
Instead of
3-8? Zalitis could have won beautifully using
≡
24-29!
42.33x13
22x44
43.32-27
21x43
44.48x50
15-20! Now
45.45-40? loses due to
2-8
46.13x2
20-24
47.2x30
25x45 with a threefold opposition. And
≡
45.50-44 doesn't help either, since black plays
20-24! and the necessary move
46.44-39? is prevented using the same combination
2-8
47.13x2
17-22
48.2x30
25x43 B+
After
27.38-33? Tabunovs won the game using the well known combination
16-21
28.27x16
14-20!
29.25x23
18x40
30.35x44
22-27
31.31x22
17x50
After
45.36-31? Millers won very convincingly using
13-18!
46.31-27
Here,
≡
46.38-32
17-22! would not make any difference:
47.43-38
8-12
48.31-27
22x31
49.26x37
18-22
50.37-31
16-21 etc.
≡
17-22!
47.38-32
22x31
48.26x37
18-22
49.37-31
16-21! Now after
50.43-38
8-12
51.31-26
12-17 the game is over. Therefore the white player sacrificed a piece with
≡
50.31-27, but that didn't help to save the game.
In this classical position, the black position is overdeveloped. It is very instructive how the Dutch grandmaster Sipma takes advantage of that.
35.40-34!
24-29
After
≡
20-25
36.48-43
15-20? white can win using
37.47-41
17-22
38.28x17
12x21
39.33-28
24-29
40.28-22
29x40
41.45x34
8-12
42.22-17!
20-24
43.17x8
13x2
44.38-33
2-7
45.41-36
7-12
46.37-31
26x28
47.33x13
19x8
48.36-31
21x32
49.34-30
25x34
50.39x37
≡
36.33x24
20x40
37.45x34
17-22
38.28x17
12x21
39.38-33
19-24?
This is the decisive mistake. The normal continuation
≡
8-12
40.33-28
12-17
41.39-33
17-22
42.28x17
21x12
43.33-28
15-20
44.48-43
20-24 looks extremely dangerous for black. However, white cannot win. For example
45.47-41
24-29
46.41-36
29x40
47.35x44
23-29!
48.28-23
19x28
49.32x34
12-17
50.43-38
17-22!
51.37-32
22x31
52.36x27
13-19! and black survives.
≡
40.48-43!
15-20
41.47-41!
13-19
42.37-31
26x46
43.34-30
46x28
44.33x2
21x32
45.2-13!!
With this beautiful move Sipma secures the win.
19x8
46.30x37
16-21
47.39-33
After
24-30? Anikeev ended the game using the effective combination
39.48-43!
30x48
40.29-23!
48x22
41.28x19
18x29
42.33x15
White is in trouble, and in the game white lost after
44.48-42?
24-29!
45.33x24
23-29
46.24x33
14-20
47.25x23
18x47. But with
≡
44.31-26
11-17
45.48-43!
24-29
46.33x24
23-29
47.24x33
14-20
48.25x23
18x49
49.28-22
17x37
50.30-24
49x21
51.26x19 he could have saved the game.
After
34.34-29? Domchev emptied the board using
18-23!
35.29x7
24-29
36.33x24
19x30
37.35x24
8-12
38.7x18
13x35
With
10-14? Masanauskas became the victim of a well known opening trap:
8.27-22!
18x27
9.36-31!
27x36
10.32-27
21x32
11.37x10
9-14
12.10x19
13x24
13.30x19
4-10
14.40-34?
But this move is inaccurate. White should have defended the outpost on 19 using
≡
14.44-39
3-9
15.35-30! and black can't play
20-24? due to
16.19-14!
24x33
17.14x5 W+
After
11-17? Ivanov could have gained a big advantage using a well known scheme:
40.27-21!
16x27
41.31x11
6x17
42.36-31
14-19
43.31-27
19-23
44.28x19
13x24
46.33-28
However,
the computer shows that black can survive this precarious situation using
8-13
47.38-33
4-10!
48.43-39
10-15!
49.28-22
17x28
50.33x22
13-19
51.22x13
19x8
52.39-33
8-13
53.33-28
12-18
54.28-22
13-19
55.22x13
19x8
56.27-22
15-20! (not
≡
8-12?
57.32-27
3-8
58.37-32
8-13
59.32-28
12-18
60.22-17 W+)
≡
57.32-27
20-25!
58.37-32
25-30
59.34x25
24-29 etc.
In this tricky endgame Thijssen played
55.12-7? This allowed Bobkov to grab both points using
41-46!
56.7-2
46-14!
57.2-8
33-38!
Now the white king can't go anywhere. After
58.8-26? black has
16-21
59.26x42
47x2.
≡
58.35-30
47-36
Instead of
5-10? Kalejs could have decided the game elegantly using
≡
8-13!
40.39-34
13-19!
41.43-39
27-31! and white is the victim of a terrible case of `zugzwang`.
Krebe started correctly with
24-30!
32.35x24
20x40
33.45x34 But instead of
12-17? he should have played
≡
15-20! Then
34.49-44? is not possible due to the combination
23-29!
35.33x15
14-20
36.25x23
18x49 B+. And since
≡
35.33-29? is also impossible due to
19-24
36.28x17
24x11, white will lose the game.
When white played
41.36-31? Panchenkov decided the game using elementary means:
20-25!
42.29x20
15x24 Now both
43.45-40? and
≡
43.43-39?
are prevented due to
18-23. The game continued with
≡
43.38-32
8-12
44.31-26
Or
≡
44.31-27?
3-8
45.43-38
10-15 B+
≡
3-8
45.32-27
17-22
46.28x17
12x32 and white resigned.
After the inaccurate
5-10? Anikeev got a great opportunity to close the gap with the leaders.
44.37-32!
10-14
Most likely Slump had missed the combination
≡
17-21?
46.36-31!
26x19
47.29-24
20x29
48.34x5 in his calculations.
≡
45.32-27!
Now white has a decisive advantage.
3-8
46.30-24
8-13
47.42-38
17-22
48.38-33?
But this allows black to escape miraculously. The right move was
≡
48.40-35!
22x31
49.36x27
20-25 (since
≡
12-17?
50.23x21
26x17 loses due to
51.34-30!
≡
51.34-30
13-18
52.30-25
17-22
53.27-21
22-28
54.38-33!
28x39
55.29-23 W+)
≡
50.27-22
18x27
51.23-19
14x23
52.29x7 W+
≡
22x31
49.36x27
12-17!
50.23x21
26x17
51.40-35
Here
≡
51.33-28? leads to a draw after
14-19
52.34-30
17-22
53.27x9
20-25
54.24x13
25x32.
≡
13-18
52.33-28
20-25
53.27-21
17x26
54.28-23
25-30
10.37-32?
This move is hardly ever played, and rightfully so.
21-27!
11.32x21
22-28
12.33x22
18x16
13.29x18
20x29?
But here black should have played
≡
12x23!
14.39-33
20x29
15.33x24
14-20!
16.43-39 (since
≡
16.34-29?
23x34
17.40x29 simply loses a piece after
10-14
18.44-40
14-19
19.40-35
19x30
20.35x24
9-14
21.45-40
14-19
22.40-35
19x30
23.35x24
4-9
etc.)
≡
20x29
17.39-33
10-14
18.33x24
14-20
19.34-29 (here
≡
19.44-39
20x29
20.39-33
9-14
21.33x24
14-20
makes no difference)
≡
23x34
20.40x29
9-14
21.44-40
14-19
22.40-35
19x30
23.35x24
3-9
24.49-44
9-14
25.44-40
14-19
26.40-35
19x30
27.35x24
4-9
28.45-40
9-14 and this position looks practically lost for white. It turns out that Frerik Andriessen already played like this in the world championship cadets 2007:
Mariusz Slezak - Frerik Andriessen 0-2 (28-6-2007)
≡
1.33-29
17-22
2.39-33
11-17
3.44-39
6-11
4.50-44
1-6
5.31-26
16-21
6.32-28
19-23
7.28x19
14x23
8.35-30
10-14
9.30-24
5-10
10.37-32
21-27
11.32x21
22-28
12.33x22
18x16
13.29x18
12x23
14.39-33
20x29
15.33x24
14-20
16.43-39
20x29
17.39-33
10-14
18.33x24
14-20
19.44-39
20x29
20.39-33
9-14
21.33x24
14-20
22.34-29
23x34
23.40x29
3-9
24.49-44
9-14
25.45-40
4-10(?) (better
≡
14-19)
≡
26.44-39
20-25
27.38-33
14-19
28.40-35
19x30
29.35x24
13-18
30.24-19
25-30
31.48-43
7-12
32.42-38
30-35
33.39-34
8-13
34.19x8
12x3
35.43-39
18-23
36.29x18
17-21
37.26x17
11x13
38.41-37
10-14
39.37-32
13-19
40.36-31
19-24
41.32-28
14-20
42.31-27
24-29
43.34x23
35-40
44.28-22
40-45
45.23-19
6-11
46.33-28
11-17
47.22x11
16x7
48.46-41
7-12
49.27-22
12-18
50.22x13
45-50
51.38-33
50-45
52.47-42
45-12
53.28-22
12-8
3-8? Honhalskyi missed the unexpected combination
≡
19-24!!
28.28x8 (the other two captures lose more easily)
14-19
29.25x23
18x49. Even though white has a material advantage, the situation is hopeless now. For example
30.39-34
49-35! and the threat
24-30 is decisive.
43.48-43?
21-26
On Toernooibase it was noted by Jan Koerselman that black could have won the game using the combination
≡
17-22!
44.28x26
23-28
45.32x12
13-18
46.12x23
19x48
47.30x10
48x47.
≡
44.43-39
17-21
45.50-45?
And Hendrik Veenstra showed that white could have forced a win using exact the same combination:
≡
45.39-34
3-8
46.34-29!
23x25
47.28-23
19x39
48.38-33
39x28
49.32x3
21x41
50.3x4.
After
6-11? Lieschchynskyi missed a nice forcing:
42.27-22!
11-16
43.49-43!
7-11
44.33-29
24x44
45.43-39
44x33
46.38x9
14x3
47.25x23 W+
Ositis showed that the tempting move
25-30? was poisoned due to
33.33-28!
22x44
34.40x49
30x28
35.38-32 and black resigned.
60.10-5? White could have won the game using
≡
60.10-28! and now either
31-36
61.32-27
12-18
62.28-6 W+ or
≡
12-18
61.28-6
31-36
62.32-27 etc.
In this interesting position Meijer made a big mistake with
27.28-22?, which gave Anikeev the opportunity to immediately decide the game with the combination
11-17!
28.22x11
16x7
29.27x16
18-23 and white resigned. This is a pity, since the position has many interesting possibilities. After the logical
≡
27.42-38(?) black can play
12-17! This looks problematic for white, but with
28.36-31!
17-22
29.28x17
11x22
30.48-43! white can keep the game going. Another plan for white is
≡
27.44-40
9-14
28.37-31!
26x37
29.42x31, and now for example
4-10
30.28-23
12-17
31.23x12
17x8
32.47-42
21-26
33.32-28
26x37
34.42x31. Even
≡
27.47-41! is a serious move, since the situation after
26-31
28.37x19
18-23
29.29x18
20x47
30.18-12! is far from clear.
© Wieger Wesselink https://10x10.org