Manaus Plaza Open II 2017

Date: 2017-10-21~22
Location: Manaus, Amazonas, Brazil
Links: Manaus Plaza Open II 2017
Winners Top 3 All Results By Person Records Scrambles
3x3x3 Cube    First round    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 7.77 9.14Brazil
9.06      11.14     8.90      9.46      7.77
2Renan Gonçalves Melo 11.95 13.46Brazil
12.67     13.90     15.42     11.95     13.82
3Jeferson Alexandre Queiroz Santana 11.84 14.24Brazil
14.57     17.33     13.58     11.84     14.58
4Marcius Gayber de Lima Pinto Junior 13.43 14.65Brazil
15.37     17.15     14.21     14.38     13.43
5Rodrigo Farias de Brito 17.27 18.47Brazil
18.09     17.27     17.73     21.50     19.60
6Rafael de Andrade Cinoto 17.73 18.56Brazil
17.96     18.94     18.78     19.84     17.73
7Thiago Cavalcante Pereira 16.89 18.60Brazil
17.99     19.04     16.89     18.77     21.75
8Samuel Omena Simões 18.04 19.50Brazil
19.57     22.77     18.04     20.76     18.18
9Gabriel Silva dos Santos 18.17 19.98Brazil
18.62     30.72     20.86     20.47     18.17
10Davi de Andrade Iácono 15.48 20.37Brazil
15.48     19.77     20.64     20.71     23.82
11Matheus Peres Albuquerque 19.22 20.53Brazil
20.49     19.22     20.50     24.16     20.60
12Vinícius Alexandre de A. Borges 16.24 22.90Brazil
24.12     20.36     24.22     24.49     16.24
13Lucyelle Alves Rodrigues 19.54 23.91Brazil
25.32     24.70     19.54     29.01     21.72
14Jardson Bandeira Pereira 20.14 24.75Brazil
20.14     23.40     26.80     24.11     26.73
15Lucas Valeruz Rêgo 23.48 25.76Brazil
28.54     23.48     24.34     26.81     26.14
16Kevin Matheus Carvalho de Oliveira 23.44 26.17Brazil
23.44     28.20     27.03     26.78     24.69
17Ruric Victor Costa Da Silva 23.69 26.25Brazil
34.33     24.27     29.98     24.49     23.69
18Arthur Uguen de Mendonça 22.85 26.99Brazil
33.49     22.85     27.64     24.05     29.28
19William da Silva Lima 23.06 28.15Brazil
29.73     23.06     40.93     26.06     28.66
20Alexandre Moura Rufino 21.16 29.87Brazil
31.50     48.29     25.42     32.68     21.16
21Franklin de Assis Silva 30.11 33.06Brazil
31.28     30.76     37.14     1:07.03   30.11
22Caio Cesar Guimas Peres 33.27 38.77Brazil
37.76     39.02     33.27     39.54     47.46
23Thales Araújo de Souza 38.84 40.17Brazil
48.76     39.25     39.67     41.59     38.84
24Paulo Victor Mateus França 29.47 41.80Brazil
53.97     29.47     49.64     41.16     34.60
25Joabe Laurentino de Souza 50.80 55.90Brazil
56.44     53.76     57.50     50.80     1:51.65
26Judah Ben-Shalom Martins Lins 48.30 1:00.23Brazil
52.03     1:17.37   1:15.71   52.96     48.30
27Marcos José Santos Gomes 46.58 1:03.19Brazil
1:14.77   1:34.12   1:07.86   46.94     46.58
28Raquel Valeruz Rêgo 1:10.33 1:21.56Brazil
1:37.03   1:17.15   1:10.33   1:18.98   1:28.54
29João Luiz Melo Novaes 1:38.18 2:21.16Brazil
1:48.16   3:25.59   3:23.13   1:52.18   1:38.18
 
3x3x3 Cube    Second round    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 7.04 9.85Brazil
7.04      12.49     10.02     9.44      10.09
2Renan Gonçalves Melo 12.16 12.96Brazil
14.26     12.16     13.53     12.19     13.15
3Jeferson Alexandre Queiroz Santana 13.04 14.49Brazil
15.08     19.91     15.23     13.17     13.04
4Marcius Gayber de Lima Pinto Junior 12.96 14.75Brazil
17.01     16.59     13.65     12.96     14.01
5Samuel Omena Simões 14.61 16.73Brazil
15.05     19.45     21.34     14.61     15.70
6Rodrigo Farias de Brito 15.48 17.39Brazil
17.22     15.48     18.41     20.75     16.55
7Rafael de Andrade Cinoto 17.00 17.44Brazil
21.88     17.12     17.00     17.32     17.89
8Thiago Cavalcante Pereira 15.52 18.56Brazil
19.78     15.52     17.43     25.90     18.48
9Davi de Andrade Iácono 17.37 19.51Brazil
22.56     21.17     19.97     17.40     17.37
10Gabriel Silva dos Santos 18.94 20.00Brazil
18.94     20.02     25.49     20.23     19.74
11Matheus Peres Albuquerque 18.08 20.51Brazil
18.08     21.08     19.56     23.24     20.90
12Kevin Matheus Carvalho de Oliveira 19.76 22.53Brazil
23.60     20.75     23.25     32.72     19.76
13Jardson Bandeira Pereira 18.16 22.77Brazil
24.24     18.16     21.43     22.63     26.29
14Arthur Uguen de Mendonça 19.87 23.44Brazil
29.08     19.87     20.03     21.21     30.04
15Vinícius Alexandre de A. Borges 19.31 24.59Brazil
23.44     21.57     28.76     36.47     19.31
16Lucyelle Alves Rodrigues 20.48 24.88Brazil
20.48     30.17     34.01     22.31     22.15
17Ruric Victor Costa Da Silva 18.48 25.02Brazil
28.86     29.75     18.48     22.51     23.69
18William da Silva Lima 22.35 26.70Brazil
22.35     25.39     27.00     29.42     27.70
19Lucas Valeruz Rêgo 21.11 26.86Brazil
22.80     21.11     42.22     22.40     35.38
20Alexandre Moura Rufino 24.06 29.23Brazil
26.55     28.40     1:09.96   32.75     24.06
21Franklin de Assis Silva 33.86 37.61Brazil
41.36     34.77     47.76     36.70     33.86
 
3x3x3 Cube    Final    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 9.46 11.35Brazil
9.90      13.25     9.46      14.33     10.91
2Renan Gonçalves Melo 10.99 12.26Brazil
11.65     14.36     11.96     10.99     13.17
3Jeferson Alexandre Queiroz Santana 12.57 14.22Brazil
12.57     13.30     21.42     15.04     14.33
4Marcius Gayber de Lima Pinto Junior 12.80 14.35Brazil
15.40     15.14     14.18     12.80     13.72
5Rafael de Andrade Cinoto 18.39 18.98Brazil
19.45     19.09     18.40     18.39     20.04
6Gabriel Silva dos Santos 17.86 19.77Brazil
19.76     18.98     20.58     17.86     26.17
7Samuel Omena Simões 13.38 20.78Brazil
21.44     13.38     21.00     19.91     26.63
8Thiago Cavalcante Pereira 19.61 20.86Brazil
22.18     20.61     20.84     21.12     19.61
9Jardson Bandeira Pereira 20.94 23.20Brazil
21.51     22.52     20.94     25.83     25.58
10Vinícius Alexandre de A. Borges 21.54 23.60Brazil
1:08.00   23.54     22.78     24.49     21.54
11Matheus Peres Albuquerque 22.20 23.82Brazil
22.20     23.26     25.30     33.96     22.90
12Davi de Andrade Iácono 19.38 25.36Brazil
20.20     21.01     34.87     19.38     40.92
13Rodrigo Farias de Brito 17.93 25.95Brazil
51.19     34.34     25.57     17.93     17.93
14Kevin Matheus Carvalho de Oliveira 23.75 28.00Brazil
49.09     31.95     23.75     23.87     28.17
15Arthur Uguen de Mendonça 21.74 29.36Brazil
21.74     36.81     29.34     32.01     26.74
 
2x2x2 Cube    First round    Average of 5    
PlacePersonBestAverageRegionDetail
1Renan Gonçalves Melo 2.85 3.73Brazil
4.32      3.78      4.08      2.85      3.34
2Antonio Gabriel Freitas da Silva 2.01 4.14Brazil
3.34      3.69      2.01      5.92      5.39
3Jeferson Alexandre Queiroz Santana 3.05 4.98Brazil
3.05      7.90      4.91      5.25      4.77
4Marcius Gayber de Lima Pinto Junior 4.31 5.05Brazil
5.44      6.78      4.49      5.23      4.31
5Gabriel Silva dos Santos 4.84 5.69Brazil
5.25      4.84      7.66      5.77      6.06
6Lucas Valeruz Rêgo 3.88 6.24Brazil
6.82      5.88      10.01     6.03      3.88
7Davi de Andrade Iácono 4.99 6.69Brazil
6.16      7.19      4.99      8.20      6.73
8Rafael de Andrade Cinoto 5.63 6.76Brazil
8.47      6.62      6.54      7.13      5.63
9Samuel Omena Simões 3.37 7.54Brazil
7.21      7.72      7.76      7.69      3.37
10Diego Barbosa Lopes 8.48 10.79Brazil
12.36     11.19     18.50     8.48      8.81
11Ruric Victor Costa Da Silva 9.62 11.13Brazil
9.62      12.05     9.80      12.34     11.55
12William da Silva Lima 7.53 11.16Brazil
7.53      11.36     12.11     10.02     DNF
13Franklin de Assis Silva 5.30 11.19Brazil
11.61     12.63     9.33      15.19     5.30
14Caio Cesar Guimas Peres 7.02 15.54Brazil
7.02      22.69     22.55     12.40     11.68
15Raquel Valeruz Rêgo 8.66 19.94Brazil
8.66      31.86     13.39     19.26     27.16
16Bernardo Cid Ferreira Omena 17.14 29.46Brazil
39.12     43.75     22.56     17.14     26.70
17João Luiz Melo Novaes 10.32 34.23Brazil
1:59.50   33.23     21.22     48.24     10.32
18Otto Mateus da Rocha Machado 26.84 36.15Brazil
36.08     34.06     1:20.21   26.84     38.31
19Natan Barbosa Soares 20.80 DNFBrazil
DNF       20.80     DNF       34.52     32.46
 
2x2x2 Cube    Second round    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 2.24 3.55Brazil
3.89      3.36      3.41      2.24      4.20
2Marcius Gayber de Lima Pinto Junior 3.89 4.35Brazil
4.07      4.71      5.94      3.89      4.28
3Jeferson Alexandre Queiroz Santana 3.88 5.11Brazil
4.85      6.04      4.43      3.88      6.07
4Renan Gonçalves Melo 2.97 5.48Brazil
4.37      2.97      5.46      6.89      6.61
5Lucas Valeruz Rêgo 3.98 5.61Brazil
6.27      3.98      6.36      5.38      5.17
6Davi de Andrade Iácono 4.30 5.73Brazil
9.26      4.30      6.44      5.96      4.78
7Samuel Omena Simões 4.52 6.00Brazil
7.33      5.14      5.52      9.42      4.52
8Gabriel Silva dos Santos 4.42 6.19Brazil
6.21      4.42      7.08      6.46      5.89
9Rafael de Andrade Cinoto 5.53 7.36Brazil
6.98      10.73     6.69      5.53      8.42
10Diego Barbosa Lopes 7.58 10.24Brazil
8.81      13.09     9.32      7.58      12.58
11Caio Cesar Guimas Peres 7.75 10.77Brazil
11.18     DNF       8.13      7.75      12.99
12Ruric Victor Costa Da Silva 7.74 11.62Brazil
12.91     14.22     7.74      10.40     11.55
13William da Silva Lima 8.67 12.69Brazil
11.01     8.67      13.25     15.22     13.81
 
2x2x2 Cube    Final    Average of 5    
PlacePersonBestAverageRegionDetail
1Renan Gonçalves Melo 2.95 3.29Brazil
3.10      2.95      3.81      3.27      3.49
2Antonio Gabriel Freitas da Silva 1.23 4.03Brazil
4.63      1.23      8.69      3.44      4.02
3Marcius Gayber de Lima Pinto Junior 2.76 5.33Brazil
6.06      2.76      4.94      4.99      6.43
4Lucas Valeruz Rêgo 4.51 5.45Brazil
5.22      5.01      4.51      6.81      6.13
5Davi de Andrade Iácono 1.59 5.48Brazil
5.48      1.59      13.41     3.81      7.14
6Jeferson Alexandre Queiroz Santana 3.16 6.65Brazil
3.16      DNF       3.86      6.17      9.93
 
4x4x4 Cube    Final    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 32.47 38.15Brazil
32.47     42.69     41.01     34.93     38.51
2Jeferson Alexandre Queiroz Santana 1:02.82 1:05.38Brazil
1:07.89   1:14.49   1:04.09   1:02.82   1:04.15
3Rafael de Andrade Cinoto 1:11.23 1:21.58Brazil
1:21.09   1:22.23   2:22.55   1:21.43   1:11.23
4Gabriel Silva dos Santos 1:36.56 1:40.50Brazil
1:42.50   1:41.75   1:37.24   2:09.29   1:36.56
5Samuel Omena Simões 1:46.86 1:56.83Brazil
1:46.86   1:57.67   2:44.71   1:53.27   1:59.55
6Ruric Victor Costa Da Silva 1:35.71 1:57.71Brazil
1:51.92   1:56.22   2:31.15   1:35.71   2:04.98
7Renan Gonçalves Melo 1:14.52 2:33.17Brazil
1:39.42   1:14.52   DNF       3:30.19   2:29.91
8Davi de Andrade Iácono 2:39.99 Brazil
DNF       2:39.99
9Herian Brito de Oliveira DNF Brazil
DNF       DNF
 
5x5x5 Cube    Final    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 1:32.30 1:44.04Brazil
1:44.55   1:45.11   1:32.30   1:42.45   1:47.10
2Jeferson Alexandre Queiroz Santana 2:23.07 2:33.00Brazil
2:35.75   2:45.09   2:36.70   2:26.56   2:23.07
3Rafael de Andrade Cinoto 2:38.48 2:52.30Brazil
2:54.26   2:38.48   3:09.89   2:54.39   2:48.24
4Ruric Victor Costa Da Silva 4:02.35 Brazil
4:15.24   4:02.35
 
3x3x3 Blindfolded    Final    Best of 3    
PlacePersonBestAverageRegionDetail
1Rafael de Andrade Cinoto 3:46.32 4:46.64Brazil
5:47.84   3:46.32   4:45.76
2Ruric Victor Costa Da Silva 5:51.30 DNFBrazil
DNF       DNF       5:51.30
3Jeferson Alexandre Queiroz Santana 6:52.49 DNFBrazil
6:52.49   DNF       DNF
 
3x3x3 One-Handed    First round    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 16.98 18.59Brazil
20.20     18.10     16.98     19.00     18.67
2Renan Gonçalves Melo 16.87 18.93Brazil
19.64     17.76     16.87     26.19     19.40
3Marcius Gayber de Lima Pinto Junior 21.19 22.95Brazil
21.19     22.47     23.52     23.70     22.86
4Rafael de Andrade Cinoto 24.42 32.62Brazil
36.29     24.42     33.17     33.00     31.70
5Jeferson Alexandre Queiroz Santana 29.59 34.97Brazil
29.59     41.89     29.83     55.98     33.19
6Gabriel Silva dos Santos 32.82 35.61Brazil
34.76     35.34     41.70     32.82     36.74
7Samuel Omena Simões 34.37 38.35Brazil
40.64     34.37     51.68     39.63     34.78
8Rodrigo Farias de Brito 49.44 50.85Brazil
52.56     50.52     49.46     49.44     1:00.35
9Lucas Valeruz Rêgo 42.36 1:00.37Brazil
55.64     42.36     1:08.76   1:05.48   59.98
10Ruric Victor Costa Da Silva 1:12.76 Brazil
1:22.99   1:12.76
11Davi de Andrade Iácono 1:17.70 Brazil
1:17.70   1:35.56
12Paulo Victor Mateus França 1:27.95 Brazil
1:27.95   1:34.81
 
3x3x3 One-Handed    Final    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 15.51 17.30Brazil
17.69     15.51     16.27     19.99     17.94
2Renan Gonçalves Melo 17.31 17.92Brazil
18.00     17.31     18.40     17.35     21.81
3Marcius Gayber de Lima Pinto Junior 18.77 22.09Brazil
20.07     18.77     23.43     22.76     25.42
4Rafael de Andrade Cinoto 27.82 32.93Brazil
31.43     30.14     1:03.02   27.82     37.21
5Jeferson Alexandre Queiroz Santana 28.62 37.06Brazil
41.14     33.31     1:09.90   36.74     28.62
6Gabriel Silva dos Santos 32.19 39.40Brazil
51.78     34.54     49.64     34.01     32.19
7Samuel Omena Simões 34.79 42.28Brazil
34.79     44.00     56.01     38.46     44.37
8Rodrigo Farias de Brito 37.36 50.36Brazil
55.12     37.36     52.65     43.30     1:01.19
9Lucas Valeruz Rêgo 49.07 1:00.43Brazil
1:01.99   49.07     1:02.44   59.25     1:00.05
 
Megaminx    Final    Average of 5    
PlacePersonBestAverageRegionDetail
1Jeferson Alexandre Queiroz Santana 1:01.54 1:07.70Brazil
1:06.21   1:03.49   1:17.55   1:01.54   1:13.39
2Antonio Gabriel Freitas da Silva 1:26.21 1:40.04Brazil
1:46.65   1:53.02   1:44.00   1:29.48   1:26.21
3Gabriel Silva dos Santos 1:50.08 2:03.15Brazil
2:25.16   2:04.34   2:00.67   2:04.45   1:50.08
4Rafael de Andrade Cinoto 2:20.59 2:29.14Brazil
2:32.27   2:30.62   2:31.80   2:25.01   2:20.59
5Renan Gonçalves Melo 2:24.51 2:31.82Brazil
3:33.32   2:24.93   2:37.00   2:33.54   2:24.51
6Ruric Victor Costa Da Silva 5:40.54 Brazil
DNF       5:40.54
7Samuel Omena Simões DNF Brazil
DNF       DNS
 
Pyraminx    First round    Average of 5    
PlacePersonBestAverageRegionDetail
1Jeferson Alexandre Queiroz Santana 3.48 4.33Brazil
4.46      4.39      3.48      4.14      4.81
2Antonio Gabriel Freitas da Silva 3.34 4.67Brazil
3.34      4.20      6.10      3.70      6.29
3Marcius Gayber de Lima Pinto Junior 3.93 5.31Brazil
4.66      7.25      7.56      3.93      4.02
4Gabriel Silva dos Santos 6.03 9.29Brazil
14.73     10.93     8.06      8.87      6.03
5Renan Gonçalves Melo 6.03 11.27Brazil
9.34      12.09     13.57     12.38     6.03
6Jardson Bandeira Pereira 10.56 11.56Brazil
10.94     12.12     16.06     11.62     10.56
7Davi de Andrade Iácono 6.48 11.91Brazil
11.66     19.78     12.51     6.48      11.55
8Caio Cesar Guimas Peres 9.90 12.21Brazil
15.02     9.90      11.08     10.53     16.27
9Samuel Omena Simões 8.78 14.16Brazil
22.42     8.78      17.04     16.39     9.06
10Lucas Valeruz Rêgo 11.60 14.76Brazil
16.90     14.20     13.18     17.13     11.60
11Ruric Victor Costa Da Silva 6.94 18.72Brazil
6.94      26.65     13.40     18.81     23.95
12Bernardo Cid Ferreira Omena 12.19 26.23Brazil
24.04     35.80     DNF       12.19     18.86
13Franklin de Assis Silva 19.12 32.19Brazil
46.48     23.27     DNF       26.81     19.12
14Raquel Valeruz Rêgo 22.82 38.41Brazil
22.82     46.44     32.18     DNF       36.60
 
Pyraminx    Final    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 3.49 4.44Brazil
6.51      4.28      4.48      4.57      3.49
2Jeferson Alexandre Queiroz Santana 4.00 5.65Brazil
7.22      4.00      5.26      8.27      4.47
3Marcius Gayber de Lima Pinto Junior 5.16 6.81Brazil
7.31      6.44      5.16      9.14      6.69
4Jardson Bandeira Pereira 7.37 12.09Brazil
14.92     10.91     10.45     16.72     7.37
5Renan Gonçalves Melo 8.30 12.24Brazil
15.30     10.28     12.98     13.47     8.30
6Gabriel Silva dos Santos 6.70 13.49Brazil
20.34     13.40     13.01     14.05     6.70
 
Skewb    First round    Average of 5    
PlacePersonBestAverageRegionDetail
1Jeferson Alexandre Queiroz Santana 3.98 4.33Brazil
4.21      4.76      4.02      3.98      5.70
2Gabriel Silva dos Santos 5.45 5.63Brazil
5.83      5.86      5.45      5.54      5.52
3Antonio Gabriel Freitas da Silva 2.59 5.71Brazil
DNF       5.05      4.46      7.62      2.59
4Davi de Andrade IáconoSAR 1.46 6.35Brazil
11.87     6.22      1.46      6.05      6.77
5Renan Gonçalves Melo 5.23 8.98Brazil
15.31     7.46      7.97      11.52     5.23
6Rafael de Andrade Cinoto 8.18 16.08Brazil
10.62     8.18      19.23     18.40     28.22
7Lucas Valeruz Rêgo 17.65 19.15Brazil
18.67     20.00     29.62     18.77     17.65
8Samuel Omena Simões 15.10 23.71Brazil
30.65     20.10     43.29     15.10     20.39
9João Luiz Melo Novaes 16.11 33.78Brazil
1:16.68   34.33     27.09     39.92     16.11
 
Skewb    Final    Average of 5    
PlacePersonBestAverageRegionDetail
1Davi de Andrade Iácono 2.72 4.10Brazil
2.72      4.66      3.60      4.79      4.04
2Jeferson Alexandre Queiroz Santana 3.68 4.80Brazil
4.64      6.90      3.68      4.61      5.15
3Antonio Gabriel Freitas da Silva 2.69 5.26Brazil
2.69      6.32      4.39      5.06      6.77
4Gabriel Silva dos Santos 6.61 8.00Brazil
8.36      6.61      7.79      9.85      7.84
5Renan Gonçalves Melo 9.73 12.02Brazil
9.73      14.01     10.34     15.20     11.71
6Rafael de Andrade Cinoto 9.93 12.99Brazil
12.68     19.84     12.98     13.31     9.93
 
Square-1    Final    Average of 5    
PlacePersonBestAverageRegionDetail
1Antonio Gabriel Freitas da Silva 9.13 11.83Brazil
12.96     9.13      9.49      15.98     13.03
2Jeferson Alexandre Queiroz Santana 12.66 20.69Brazil
21.86     21.92     12.66     18.29     29.92
3Gabriel Silva dos Santos 33.82 42.43Brazil
36.61     51.49     33.82     56.38     39.18
4Marcius Gayber de Lima Pinto Junior 34.94 56.27Brazil
58.18     58.88     1:02.49   34.94     51.76
5Rafael de Andrade Cinoto 41.77 56.31Brazil
1:01.85   41.77     1:23.78   58.33     48.76
6Davi de Andrade Iácono DNF Brazil
DNF       DNF
 
3x3x3 With Feet    Final    Mean of 3    
PlacePersonBestAverageRegionDetail
1Rafael de Andrade Cinoto 45.85 50.28Brazil
45.85     51.69     53.29
2Jeferson Alexandre Queiroz Santana 1:02.77 1:19.28Brazil
1:47.78   1:07.28   1:02.77
3Marcius Gayber de Lima Pinto Junior 2:42.65 3:42.01Brazil
4:32.03   3:51.35   2:42.65
4Gabriel Silva dos Santos 4:47.91 DNFBrazil
5:25.37   4:47.91   DNF
5Lucas Valeruz Rêgo 5:09.02 DNFBrazil
DNF       5:09.02   DNF