Chizhov - Boomstra 1-1
Chizhov - Boomstra 1-1

Boomstra has gotten himself into a difficult endgame. Now he makes a mistake that could have cost him the game. 6-50? 60.21-16? But Chizhov misses it too: after   60.1-6! 50-45 61.6-33 15-20 white wins.   50-45 61.1-6 45-1 62.32-27 24-29 63.6-50 19-23 64.27-22 1-12 65.22-18 12-3 66.18-13 14-20 67.25x14 3x48 68.13-9 15-20 69.9-4 20-24! This brings the threat   29-33! 50x30 48x25 into play.   70.4-27 24-30 71.35x33 48-42

Mogilianski - Gantvarg 1-1
Mogilianski - Gantvarg 1-1

Gantvarg played 12-17? which is a dangerous move. After 36.32-27! 22x31 37.36x27 black cannot exchange the front piece on 24 anymore, for example 13-19? 38.24x13 9x18 39.33-28! 4-9 40.38-33 9-13 41.29-24! W+. And thus black is left with a position that is very difficult to defend.   36.29-23 2-7 37.32-27 22x31 38.36x27 7-12 39.39-34 13-19 40.24x13 9x29 41.34x23 25-30 42.33-28 4-9 43.38-33 9-13 44.40-34 30x39 45.33x44 13-18 46.42-37 18x29 47.27-22 17-21 48.22-17 12-18 49.17x26 14-19 50.26-21 18-23 51.37-32 29-34 52.21-17 23-29 53.17-11 19-24 54.28-23 29x18 55.11-7 15-20 56.32-27 20-25 57.27-21

Amrillaew - Buzinskij 2-0
Amrillaew - Buzinskij 2-0

In this unusual position Buzinskij played 3-8? That gave Amrillaew the opportunity to force a win using 40.48-42! 23-28 41.34-29(?) This is winning, but there was a much more elegant way to win using   41.34-30!! 25x32 42.17-12 28x50 43.12x3 50x17 44.3x8 W+   14-20 (or   24-30? 42.29-23! W+)   42.38-32 8-12 43.32x14 12x21 44.14-10 4x15 45.29-23 11-17 46.22x11 6x17 47.23-18 24-29 48.33x24 20x29 49.18-13 25-30 50.13-9 21-27 51.9-4 17-22 52.42-38 22-28 53.4x36 15-20 54.36-18

Silva - Valneris 0-2
Silva - Valneris 0-2

With plenty of time left Silva played carelessly 41.38-33? 17-22! and suddenly his position was completely lost. The main reason for this is the little combination after 42.37-31? 22-28 43.33x22 21-27 44.32x21 16x29 B+.   42.32-28 12-18 43.28x26 18x38 44.37-31 38-43 45.26-21 16x27 46.31x22 43-48

Dul - Ndjofang 0-2
Dul - Ndjofang 0-2

Another example of a player losing his concentration. Dul played 40.30-24? and Ndjofang gladly accepted the gift using 17-22! 41.21-16 13-19 42.24x4 22-27 43.4x31 26x48 44.34-29 48-37 45.29-24 12-18 46.40-35 37-14 47.36-31 18-22 48.38-33 14-10 49.33-29 10-14 50.35-30 14-41

Georgiev - Seck 2-0
Georgiev - Seck 2-0

Seck has a big tempo disadvantage, which makes this 4x4 position dangerous for black. 3-8? Making a draw was still possible using   19-23 55.29x18 12x23 etc.   55.21-16! 8-13 56.43-38 12-18 57.22-17 18-22 58.17x28 13-18 59.38-33 18-23 60.29x18 19-24 61.18-13 and black resigned.

Artykow - Meurs 0-2
Artykow - Meurs 0-2

After 23.32-28? Meurs finally won a game in this world championship using the simple combination 19-23! 24.28x10 22-28 25.33x22 18x47 26.10-5 12-17! Now the white king has no safe place on the board, for example 27.5-32 17-21 28.32x16 6-11 29.16x7 2x11 B+ or   27.5-23 24-29! B+   27.34-30 13-19 28.5x11 6x17 29.30x19 47-36 30.40-34 36-22 31.34-30 4-9 32.38-33 22x25 33.43-39 25x43 34.48x39 9-13 35.39-34 13x24 36.34-30 3-9 37.30x19 9-13 38.45-40 13x24 39.40-34 20-25 40.37-32 8-13 41.49-43 13-18 42.43-38 18-22 43.34-29 24x33 44.38x29 17-21 45.29-24 25-30 46.32-28 22x33 47.24-19 30-34 48.19-13 34-39 49.13-9 39-43 50.9-3 33-39 and Artykow did not await the capture of his king using 51.3x26 2-8 52.26x3 15-20 53.3x25 43-48 54.25x43 48x39 W+

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