Personal Page

Volodymyr Korobeinyk (Володимир Коробейник)

Name: Volodymyr Korobeinyk (Володимир Коробейник)
Region: Ukraine
Competitions: 13
WCA ID: Volodymyr Korobeinyk (Володимир Коробейник)2014KORO03
Gender: Male
Career: 2014.12.13 - 2021.10.24
2023 Annual Summary

Current Personal Records

EventNRCRWRSingleAverageWRCRNRGoldSilverBronzeSolves/Attempts
3x3x3 Cube1263076113519.2310.417505204786103/105
2x2x2 Cube2707880249453.224.8321611656721474/75
4x4x4 Cube16944741575449.4358.3117120480218627/29
7x7x7 Cube48137345674:36.705:04.9648031471525/6
3x3x3 Blindfolded87197159993:27.349/31
3x3x3 One-Handed861727634916.4621.878043214311044/46
Megaminx3097599232773:31.224/6
Pyraminx2325645163325.418.1414897503221850/50
Skewb1875571164216.288.7913116435716150/50
Square-115038491165334.1250.1612274398514932/32
3x3x3 With Feet212638271:17.191:47.109893042432/34

Sum of Ranks

 Sum of NRNRSum of CRCRSum of WRWR
Single275413373157400522368511084
Average20991295396233401734829711
3x3x3 Cube
CompetitionRoundPlaceBestAverageDetail
Kharkiv Cubefall 2021Final10 10.22 10.49
10.23     10.22     12.05     10.32     10.92
Second round12 9.23 10.41
9.60      12.25     11.62     9.23      10.02
First round21 10.84 11.76
13.35     12.76     11.09     11.43     10.84
Kharkiv Open 2019Second round15 10.52 11.14
17.01     10.52     12.09     10.69     10.65
First round20 11.33 12.42
11.33     12.68     12.11     12.48     17.88
Kharkiv Open 2018Second round24 11.87 14.22
11.87     12.24     15.81     18.29     14.62
First round35 12.90 16.11
15.92     17.48     15.93     12.90     16.49
Kharkiv Winter 2017Second round18 12.10 15.49
13.85     17.31     16.23     12.10     16.39
First round14 11.67 13.65
14.39     12.41     16.51     14.15     11.67
Kharkiv Cube Day 2017Second round14 11.42 12.87
11.80     12.60     14.20     11.42     16.92
First round30 13.87 15.32
14.90     15.79     17.40     13.87     15.27
Fresh Cube 2017Second round16 13.20 14.69
14.84     17.85     13.20     15.25     13.98
First round17 13.57 14.68
13.57     14.41     14.94     15.55     14.70
Kharkiv Cube Day 2016Second round30 14.47 16.80
25.53     15.24     17.47     14.47     17.70
First round19 13.95 15.03
16.30     16.04     13.95     14.99     14.07
Cowboys Summer 2016First round29 13.55 17.33
13.55     16.25     19.29     DNF       16.44
Kharkiv Special 2016First round20 14.43 16.07
15.80     16.37     14.43     17.68     16.03
Beit Dan Open 2015Second round31 13.52 17.76
18.87     16.58     13.52     18.03     18.67
First round37 16.10 20.15
18.11     DNF       16.10     23.07     19.28
Kharkiv Special 2015First round48 25.56 28.84
37.40     32.73     25.56     25.86     27.94
Kharkiv Winter 2014First round85 32.16 38.46
36.27     40.48     38.63     32.16     45.70
 
2x2x2 Cube
CompetitionRoundPlaceBestAverageDetail
Kharkiv Cubefall 2021Second round24 5.04 5.67
5.26      6.80      5.33      5.04      6.43
First round24 4.05 4.83
4.05      5.28      6.54      4.81      4.41
Kharkiv Open 2019Second round24 4.98 5.94
6.73      5.02      6.08      4.98      7.20
First round24 3.22 5.70
3.32      8.62      8.26      3.22      5.53
Kharkiv Open 2018Second round31 5.17 6.23
DNF       5.78      5.17      5.94      6.96
First round13 4.02 5.66
6.44      6.56      4.30      4.02      6.24
Kharkiv Winter 2017Second round19 5.42 6.11
6.33      5.73      7.85      5.42      6.26
First round18 5.06 5.89
5.34      6.27      6.49      5.06      6.06
Kharkiv Cube Day 2017First round29 5.14 7.05
7.72      7.46      6.95      6.74      5.14
Fresh Cube 2017Second round15 3.52 6.32
3.52      8.78      6.35      6.12      6.49
First round19 5.54 6.98
7.24      5.84      9.18      5.54      7.86
Kharkiv Cube Day 2016First round20 5.50 5.84
5.68      5.50      5.90      5.94      7.79
Cowboys Summer 2016First round19 5.84 6.33
5.84      5.98      6.08      6.94      9.52
Beit Dan Open 2015First round27 4.57 6.60
7.08      6.56      6.15      4.57      7.13
Kharkiv Winter 2014First round76 13.90 18.74
13.90     20.39     19.91     16.28     20.02
 
4x4x4 Cube
CompetitionRoundPlaceBestAverageDetail
Kharkiv Cubefall 2021First round30 49.43 58.31
49.43     56.87     57.65     1:00.42   1:13.04
Kharkiv Open 2019First round24 54.07 1:00.68
1:03.51   54.07     1:09.06   58.24     1:00.30
Kharkiv Open 2018First round30 1:12.92 1:19.85
1:18.35   1:25.88   1:12.92   1:15.33   1:41.03
Kharkiv Winter 2017First round22 1:09.93 1:26.54
DNF       1:17.40   1:17.41   1:44.82   1:09.93
Kharkiv Cube Day 2017First round35 1:21.93
1:21.93   1:26.79
Fresh Cube 2017First round20 1:07.53 1:22.06
1:58.01   1:07.53   1:26.74   1:11.53   1:27.92
Kharkiv Cube Day 2016First round39 1:47.24
DNF       1:47.24
 
7x7x7 Cube
CompetitionRoundPlaceBestAverageDetail
Kharkiv Cubefall 2021Final11 4:36.70 5:04.96
5:06.89   4:36.70   5:31.29
Kharkiv Open 2019Final8 4:56.35 DNF
5:08.87   DNF       4:56.35
 
3x3x3 Blindfolded
CompetitionRoundPlaceBestAverageDetail
Kharkiv Cubefall 2021Final8 4:12.80 DNF
4:58.81   DNF       4:12.80
First round9 4:30.39 DNF
DNF       DNF       4:30.39
Kharkiv Open 2019First round11 DNF DNF
DNF       DNF       DNF
Kharkiv Open 2018Final8 3:27.34 DNF
3:27.34   DNF       4:29.89
First round8 4:07.39 DNF
DNF       4:07.39   4:33.00
Kharkiv Winter 2017Final8 DNF DNF
DNF       DNF       DNF
Kharkiv Cube Day 2017Final10 5:40.34 DNF
5:40.34   6:21.85   DNS
Fresh Cube 2017First round7 DNF DNF
DNF       DNF       DNF
Kharkiv Cube Day 2016Final12 DNF DNF
DNF       DNF       DNF
Cowboys Summer 2016First round10 DNF
DNF       DNF
Beit Dan Open 2015Final11 DNF DNF
DNF       DNF       DNF
 
3x3x3 One-Handed
CompetitionRoundPlaceBestAverageDetail
Kharkiv Cubefall 2021First round18 16.46 21.87
16.46     19.08     25.03     33.85     21.50
Kharkiv Open 2019First round15 19.64 22.01
20.50     23.73     21.81     19.64     25.04
Kharkiv Open 2018First round17 22.64 26.69
22.64     24.19     45.53     31.77     24.11
Kharkiv Winter 2017First round18 24.66 33.68
24.66     28.72     31.26     41.07     DNF
Kharkiv Cube Day 2017First round27 29.58 37.67
45.51     34.37     44.18     29.58     34.47
Fresh Cube 2017First round17 30.42 34.47
34.75     41.16     30.61     38.04     30.42
Kharkiv Cube Day 2016First round29 28.45 34.79
39.49     36.27     28.45     30.90     37.20
Cowboys Summer 2016First round24 29.42 33.73
30.47     33.60     47.53     29.42     37.13
Beit Dan Open 2015First round26 30.32 34.27
30.95     35.23     30.32     43.53     36.63
Kharkiv Winter 2014First round51 DNF
DNF       DNS
 
Megaminx
CompetitionRoundPlaceBestAverageDetail
Fresh Cube 2017Final15 4:42.94
4:48.20   4:42.94
Kharkiv Special 2016First round15 3:31.22
3:58.18   3:31.22
Kharkiv Special 2015First round19 DNF
DNF       DNF
 
Pyraminx
CompetitionRoundPlaceBestAverageDetail
Kharkiv Cubefall 2021First round28 5.62 10.50
8.67      11.24     12.62     5.62      11.60
Kharkiv Open 2019First round19 5.41 8.25
7.88      5.41      5.85      11.01     12.38
Kharkiv Open 2018First round25 7.47 10.31
10.40     10.95     9.66      10.88     7.47
Kharkiv Winter 2017Final12 5.59 9.69
10.23     10.52     5.59      9.08      9.76
First round13 6.28 8.94
7.95      9.81      10.88     9.07      6.28
Kharkiv Cube Day 2017First round26 8.61 9.78
10.12     8.61      10.46     11.87     8.77
Fresh Cube 2017First round14 7.94 10.72
7.94      13.54     11.43     12.40     8.34
Kharkiv Cube Day 2016First round19 7.32 9.31
10.51     11.46     8.37      9.05      7.32
Cowboys Summer 2016First round15 7.08 8.14
9.13      7.31      7.97      7.08      11.77
Beit Dan Open 2015First round23 8.68 10.78
11.02     12.19     11.62     9.70      8.68
 
Skewb
CompetitionRoundPlaceBestAverageDetail
Kharkiv Cubefall 2021First round30 10.59 13.33
13.60     10.59     20.46     14.22     12.16
Kharkiv Open 2019First round25 8.08 12.38
10.83     18.12     11.02     15.30     8.08
Kharkiv Open 2018First round16 7.58 8.79
7.58      9.45      10.40     8.58      8.34
Kharkiv Winter 2017First round17 10.12 12.61
13.93     11.30     20.54     12.61     10.12
Kharkiv Cube Day 2017First round18 6.64 11.49
9.72      14.09     6.64      10.66     21.21
Fresh Cube 2017Final10 10.74 12.37
10.87     12.18     10.74     14.05     16.67
First round11 6.28 11.26
6.28      13.32     7.82      17.62     12.65
Kharkiv Cube Day 2016First round25 10.62 15.42
14.88     19.47     20.85     11.92     10.62
Cowboys Summer 2016First round19 9.77 14.74
13.12     21.12     9.77      14.61     16.50
Beit Dan Open 2015First round29 11.04 18.58
12.95     11.04     27.33     16.78     26.00
 
Square-1
CompetitionRoundPlaceBestAverageDetail
Kharkiv Cubefall 2021First round17 36.74 50.16
48.82     46.33     1:02.86   36.74     55.34
Kharkiv Open 2019Final18 52.25
1:27.16   52.25
Kharkiv Special 2018First round14 34.12 52.32
34.12     47.85     47.47     1:10.23   1:01.64
Kharkiv Open 2018Final14 56.04 1:02.98
56.04     1:08.45   1:09.36   1:00.82   59.67
Kharkiv Winter 2017Final11 53.51 1:07.31
1:28.71   1:20.18   1:06.75   53.51     55.00
Fresh Cube 2017Final9 45.22 1:07.04
1:10.90   45.22     1:09.66   1:00.57   1:20.60
Kharkiv Special 2016First round14 54.84 1:00.93
1:20.74   57.09     54.84     1:06.65   59.04
 
3x3x3 Multi-Blind
CompetitionRoundPlaceBestAverageDetail
Kharkiv Special 2018Final4 DNF
DNF
 
3x3x3 With Feet
CompetitionRoundPlaceBestAverageDetail
Kharkiv Open 2019Final5 1:17.19 1:53.37
1:50.01   1:43.19   2:10.12   2:06.90   1:17.19
First round6 1:32.32 1:47.10
1:41.62   2:35.29   1:59.27   1:32.32   1:40.40
Kharkiv Special 2018First round8 1:51.57 2:12.16
2:26.13   1:51.57   3:27.85   2:10.04   2:00.32
Kharkiv Open 2018Final7 2:28.62 2:49.42
2:28.62   4:21.60   2:40.84   2:40.97   3:06.46
First round8 2:49.57 3:16.42
3:58.45   2:50.68   4:27.28   2:49.57   3:00.13
Kharkiv Special 2016Final9 2:55.21 3:38.19
2:55.21   3:21.31   4:38.05
First round8 2:45.81 3:20.48
3:52.83   3:22.79   2:45.81
Beit Dan Open 2015Final9 2:41.01 DNF
DNF       2:41.01   DNF
Kharkiv Cubefall 2021
EventRoundPlaceBestAverageDetail
3x3x3 CubeFinal10 10.22 10.49
10.23     10.22     12.05     10.32     10.92
Second round12 9.23 10.41
9.60      12.25     11.62     9.23      10.02
First round21 10.84 11.76
13.35     12.76     11.09     11.43     10.84
2x2x2 CubeSecond round24 5.04 5.67
5.26      6.80      5.33      5.04      6.43
First round24 4.05 4.83
4.05      5.28      6.54      4.81      4.41
4x4x4 CubeFirst round30 49.43 58.31
49.43     56.87     57.65     1:00.42   1:13.04
7x7x7 CubeFinal11 4:36.70 5:04.96
5:06.89   4:36.70   5:31.29
3x3x3 BlindfoldedFinal8 4:12.80 DNF
4:58.81   DNF       4:12.80
First round9 4:30.39 DNF
DNF       DNF       4:30.39
3x3x3 One-HandedFirst round18 16.46 21.87
16.46     19.08     25.03     33.85     21.50
PyraminxFirst round28 5.62 10.50
8.67      11.24     12.62     5.62      11.60
SkewbFirst round30 10.59 13.33
13.60     10.59     20.46     14.22     12.16
Square-1First round17 36.74 50.16
48.82     46.33     1:02.86   36.74     55.34
 
Kharkiv Open 2019
EventRoundPlaceBestAverageDetail
3x3x3 CubeSecond round15 10.52 11.14
17.01     10.52     12.09     10.69     10.65
First round20 11.33 12.42
11.33     12.68     12.11     12.48     17.88
2x2x2 CubeSecond round24 4.98 5.94
6.73      5.02      6.08      4.98      7.20
First round24 3.22 5.70
3.32      8.62      8.26      3.22      5.53
4x4x4 CubeFirst round24 54.07 1:00.68
1:03.51   54.07     1:09.06   58.24     1:00.30
7x7x7 CubeFinal8 4:56.35 DNF
5:08.87   DNF       4:56.35
3x3x3 BlindfoldedFirst round11 DNF DNF
DNF       DNF       DNF
3x3x3 One-HandedFirst round15 19.64 22.01
20.50     23.73     21.81     19.64     25.04
PyraminxFirst round19 5.41 8.25
7.88      5.41      5.85      11.01     12.38
SkewbFirst round25 8.08 12.38
10.83     18.12     11.02     15.30     8.08
Square-1Final18 52.25
1:27.16   52.25
3x3x3 With FeetFinal5 1:17.19 1:53.37
1:50.01   1:43.19   2:10.12   2:06.90   1:17.19
First round6 1:32.32 1:47.10
1:41.62   2:35.29   1:59.27   1:32.32   1:40.40
 
Kharkiv Special 2018
EventRoundPlaceBestAverageDetail
Square-1First round14 34.12 52.32
34.12     47.85     47.47     1:10.23   1:01.64
3x3x3 Multi-BlindFinal4 DNF
DNF
3x3x3 With FeetFirst round8 1:51.57 2:12.16
2:26.13   1:51.57   3:27.85   2:10.04   2:00.32
 
Kharkiv Open 2018
EventRoundPlaceBestAverageDetail
3x3x3 CubeSecond round24 11.87 14.22
11.87     12.24     15.81     18.29     14.62
First round35 12.90 16.11
15.92     17.48     15.93     12.90     16.49
2x2x2 CubeSecond round31 5.17 6.23
DNF       5.78      5.17      5.94      6.96
First round13 4.02 5.66
6.44      6.56      4.30      4.02      6.24
4x4x4 CubeFirst round30 1:12.92 1:19.85
1:18.35   1:25.88   1:12.92   1:15.33   1:41.03
3x3x3 BlindfoldedFinal8 3:27.34 DNF
3:27.34   DNF       4:29.89
First round8 4:07.39 DNF
DNF       4:07.39   4:33.00
3x3x3 One-HandedFirst round17 22.64 26.69
22.64     24.19     45.53     31.77     24.11
PyraminxFirst round25 7.47 10.31
10.40     10.95     9.66      10.88     7.47
SkewbFirst round16 7.58 8.79
7.58      9.45      10.40     8.58      8.34
Square-1Final14 56.04 1:02.98
56.04     1:08.45   1:09.36   1:00.82   59.67
3x3x3 With FeetFinal7 2:28.62 2:49.42
2:28.62   4:21.60   2:40.84   2:40.97   3:06.46
First round8 2:49.57 3:16.42
3:58.45   2:50.68   4:27.28   2:49.57   3:00.13
 
Kharkiv Winter 2017
EventRoundPlaceBestAverageDetail
3x3x3 CubeSecond round18 12.10 15.49
13.85     17.31     16.23     12.10     16.39
First round14 11.67 13.65
14.39     12.41     16.51     14.15     11.67
2x2x2 CubeSecond round19 5.42 6.11
6.33      5.73      7.85      5.42      6.26
First round18 5.06 5.89
5.34      6.27      6.49      5.06      6.06
4x4x4 CubeFirst round22 1:09.93 1:26.54
DNF       1:17.40   1:17.41   1:44.82   1:09.93
3x3x3 BlindfoldedFinal8 DNF DNF
DNF       DNF       DNF
3x3x3 One-HandedFirst round18 24.66 33.68
24.66     28.72     31.26     41.07     DNF
PyraminxFinal12 5.59 9.69
10.23     10.52     5.59      9.08      9.76
First round13 6.28 8.94
7.95      9.81      10.88     9.07      6.28
SkewbFirst round17 10.12 12.61
13.93     11.30     20.54     12.61     10.12
Square-1Final11 53.51 1:07.31
1:28.71   1:20.18   1:06.75   53.51     55.00
 
Kharkiv Cube Day 2017
EventRoundPlaceBestAverageDetail
3x3x3 CubeSecond round14 11.42 12.87
11.80     12.60     14.20     11.42     16.92
First round30 13.87 15.32
14.90     15.79     17.40     13.87     15.27
2x2x2 CubeFirst round29 5.14 7.05
7.72      7.46      6.95      6.74      5.14
4x4x4 CubeFirst round35 1:21.93
1:21.93   1:26.79
3x3x3 BlindfoldedFinal10 5:40.34 DNF
5:40.34   6:21.85   DNS
3x3x3 One-HandedFirst round27 29.58 37.67
45.51     34.37     44.18     29.58     34.47
PyraminxFirst round26 8.61 9.78
10.12     8.61      10.46     11.87     8.77
SkewbFirst round18 6.64 11.49
9.72      14.09     6.64      10.66     21.21
 
Fresh Cube 2017
EventRoundPlaceBestAverageDetail
3x3x3 CubeSecond round16 13.20 14.69
14.84     17.85     13.20     15.25     13.98
First round17 13.57 14.68
13.57     14.41     14.94     15.55     14.70
2x2x2 CubeSecond round15 3.52 6.32
3.52      8.78      6.35      6.12      6.49
First round19 5.54 6.98
7.24      5.84      9.18      5.54      7.86
4x4x4 CubeFirst round20 1:07.53 1:22.06
1:58.01   1:07.53   1:26.74   1:11.53   1:27.92
3x3x3 BlindfoldedFirst round7 DNF DNF
DNF       DNF       DNF
3x3x3 One-HandedFirst round17 30.42 34.47
34.75     41.16     30.61     38.04     30.42
MegaminxFinal15 4:42.94
4:48.20   4:42.94
PyraminxFirst round14 7.94 10.72
7.94      13.54     11.43     12.40     8.34
SkewbFinal10 10.74 12.37
10.87     12.18     10.74     14.05     16.67
First round11 6.28 11.26
6.28      13.32     7.82      17.62     12.65
Square-1Final9 45.22 1:07.04
1:10.90   45.22     1:09.66   1:00.57   1:20.60
 
Kharkiv Cube Day 2016
EventRoundPlaceBestAverageDetail
3x3x3 CubeSecond round30 14.47 16.80
25.53     15.24     17.47     14.47     17.70
First round19 13.95 15.03
16.30     16.04     13.95     14.99     14.07
2x2x2 CubeFirst round20 5.50 5.84
5.68      5.50      5.90      5.94      7.79
4x4x4 CubeFirst round39 1:47.24
DNF       1:47.24
3x3x3 BlindfoldedFinal12 DNF DNF
DNF       DNF       DNF
3x3x3 One-HandedFirst round29 28.45 34.79
39.49     36.27     28.45     30.90     37.20
PyraminxFirst round19 7.32 9.31
10.51     11.46     8.37      9.05      7.32
SkewbFirst round25 10.62 15.42
14.88     19.47     20.85     11.92     10.62
 
Cowboys Summer 2016
EventRoundPlaceBestAverageDetail
3x3x3 CubeFirst round29 13.55 17.33
13.55     16.25     19.29     DNF       16.44
2x2x2 CubeFirst round19 5.84 6.33
5.84      5.98      6.08      6.94      9.52
3x3x3 BlindfoldedFirst round10 DNF
DNF       DNF
3x3x3 One-HandedFirst round24 29.42 33.73
30.47     33.60     47.53     29.42     37.13
PyraminxFirst round15 7.08 8.14
9.13      7.31      7.97      7.08      11.77
SkewbFirst round19 9.77 14.74
13.12     21.12     9.77      14.61     16.50
 
Kharkiv Special 2016
EventRoundPlaceBestAverageDetail
3x3x3 CubeFirst round20 14.43 16.07
15.80     16.37     14.43     17.68     16.03
MegaminxFirst round15 3:31.22
3:58.18   3:31.22
Square-1First round14 54.84 1:00.93
1:20.74   57.09     54.84     1:06.65   59.04
3x3x3 With FeetFinal9 2:55.21 3:38.19
2:55.21   3:21.31   4:38.05
First round8 2:45.81 3:20.48
3:52.83   3:22.79   2:45.81
 
Beit Dan Open 2015
EventRoundPlaceBestAverageDetail
3x3x3 CubeSecond round31 13.52 17.76
18.87     16.58     13.52     18.03     18.67
First round37 16.10 20.15
18.11     DNF       16.10     23.07     19.28
2x2x2 CubeFirst round27 4.57 6.60
7.08      6.56      6.15      4.57      7.13
3x3x3 BlindfoldedFinal11 DNF DNF
DNF       DNF       DNF
3x3x3 One-HandedFirst round26 30.32 34.27
30.95     35.23     30.32     43.53     36.63
PyraminxFirst round23 8.68 10.78
11.02     12.19     11.62     9.70      8.68
SkewbFirst round29 11.04 18.58
12.95     11.04     27.33     16.78     26.00
3x3x3 With FeetFinal9 2:41.01 DNF
DNF       2:41.01   DNF
 
Kharkiv Special 2015
EventRoundPlaceBestAverageDetail
3x3x3 CubeFirst round48 25.56 28.84
37.40     32.73     25.56     25.86     27.94
MegaminxFirst round19 DNF
DNF       DNF
 
Kharkiv Winter 2014
EventRoundPlaceBestAverageDetail
3x3x3 CubeFirst round85 32.16 38.46
36.27     40.48     38.63     32.16     45.70
2x2x2 CubeFirst round76 13.90 18.74
13.90     20.39     19.91     16.28     20.02
3x3x3 One-HandedFirst round51 DNF
DNF       DNS
No.DateNameRegionCity
132021-10-23~24Kharkiv Cubefall 2021UkraineKharkiv
122019-08-17~18Kharkiv Open 2019UkraineKharkiv
112018-12-25Kharkiv Special 2018UkraineKharkiv
102018-08-11~12Kharkiv Open 2018UkraineKharkiv
92017-12-23~24Kharkiv Winter 2017UkraineKharkiv
82017-10-01Kharkiv Cube Day 2017UkraineKharkiv
72017-05-13~14Fresh Cube 2017UkraineKharkiv
62016-08-27Kharkiv Cube Day 2016UkraineKharkiv
52016-07-02~03Cowboys Summer 2016UkraineNovopokrovka, Kharkiv region
42016-03-13Kharkiv Special 2016UkraineKharkiv
32015-10-24Beit Dan Open 2015UkraineKharkiv
22015-03-07Kharkiv Special 2015UkraineKharkiv
12014-12-13~14Kharkiv Winter 2014UkraineKharkiv