Problem A
Eight Queens — Problem Statistics

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Submissions	18689
Accepted submissions	5149
Submission ratio	27.55%
Authors	5019
Full solves [?]	4103
Full solve Ratio	81.75%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-09-02 21:11:19
2	Chenzhang Hu	0.03 s	Bash	2024-02-03 07:09:29

#	User	Runtime	Language	Date
1	Joe Amenta	0.01 s	C#	2014-10-26 02:24:12
2	Daouda Camara	0.01 s	C#	2015-09-06 20:54:55
3	Faisal Rahman	0.01 s	C#	2016-01-15 06:56:11
4	Tin Pavelić	0.01 s	C#	2016-03-07 12:21:21
5	Cody Barnes	0.01 s	C#	2016-10-02 20:27:24
6	Ugnius Skučas	0.01 s	C#	2016-10-09 18:50:31
7	Johnson Ho	0.01 s	C#	2016-11-21 23:29:39
8	Matthew Rocha	0.01 s	C#	2017-02-23 20:09:33
9	Filiph Eriksson-Falk	0.01 s	C#	2017-06-19 21:36:08
10	Ansgar224	0.01 s	C#	2017-11-09 11:21:58

#	User	Runtime	Language	Date
1	David Cawthon	0.02 s	Common Lisp	2019-06-11 18:15:35

#	User	Runtime	Language	Date
1	dick move	0.00 s	Crystal	2025-09-28 17:36:13

#	User	Runtime	Language	Date
1	Anders B. Clausen	0.04 s	F#	2021-11-29 23:00:32
2	Jacob Harris Cryer Kragh	0.07 s	F#	2023-06-25 15:38:52

#	User	Runtime	Language	Date
1	Khin Nyunt	0.00 s	Go	2023-09-09 18:29:42
2	Eddy Wu	0.07 s	Go	2018-12-23 09:04:36
3	Krzysztof Gibuła	0.07 s	Go	2019-03-09 13:19:13
4	Việt Hà Nguyễn	0.08 s	Go	2016-06-18 19:56:40
5	Scott Dauer	0.08 s	Go	2020-09-08 19:50:44
6	Norbert Voelker	0.08 s	Go	2021-10-28 01:15:41
7	Péter Szakszon	0.08 s	Go	2021-12-18 09:53:54
8	Iker Lissarrague	0.08 s	Go	2022-03-12 09:12:44
9	Jitesh Doshi	0.08 s	Go	2022-05-28 18:29:32
10	Michal Sekletár	0.09 s	Go	2015-07-06 12:48:11

#	User	Runtime	Language	Date
1	Lars Tveito	0.00 s	Haskell	2015-06-10 00:22:47
2	Christian Leipe	0.00 s	Haskell	2016-03-07 13:48:10
3	Hidden user	0.00 s	Haskell	2016-07-24 06:14:11
4	Michał Grygierzec	0.00 s	Haskell	2016-10-14 01:18:53
5	Johan Meier	0.00 s	Haskell	2016-12-06 07:05:04
6	Morten Lohne	0.00 s	Haskell	2017-10-19 21:42:38
7	Ragnhild Aalvik	0.00 s	Haskell	2017-10-19 22:32:01
8	Brent Yorgey	0.00 s	Haskell	2017-11-24 02:30:11
9	Olle Eriksson	0.00 s	Haskell	2017-12-03 03:20:21
10	Shinji Koshida	0.00 s	Haskell	2025-01-19 20:02:48

#	User	Runtime	Language	Date
1	Sriniketh Vangaru	0.04 s	Java	2024-09-03 00:34:31
2	Issa Issack	0.04 s	Java	2025-01-18 05:07:54
3	Melvin Nacfil	0.04 s	Java	2025-01-23 03:40:52
4	Darryl Liu	0.04 s	Java	2025-09-04 06:03:37
5	Adisa Kruayatidee	0.05 s	Java	2014-09-27 22:28:32
6	True Punishment	0.05 s	Java	2014-09-27 22:47:37
7	Huong Nguyen	0.05 s	Java	2014-10-03 03:11:27
8	Sanira Chathuranga	0.05 s	Java	2015-05-19 11:23:57
9	Mostafa Hany Gomaa	0.05 s	Java	2015-05-21 02:39:14
10	Miles Stevenson	0.05 s	Java	2015-06-25 06:51:16

#	User	Runtime	Language	Date
1	William Jackson	0.05 s	JavaScript (Node.js)	2019-03-11 20:37:41
2	Hidden user	0.05 s	JavaScript (Node.js)	2024-11-10 04:53:33
3	Mohamed Hosny Ahmed	0.40 s	JavaScript (Node.js)	2019-11-04 20:56:16
4	Thomas Schauser	0.41 s	JavaScript (Node.js)	2021-10-14 17:06:38
5	Khin Nyunt	0.42 s	JavaScript (Node.js)	2021-08-15 08:29:40

#	User	Runtime	Language	Date
1	Jan Järfalk	0.01 s	JavaScript (SpiderMonkey)	2015-09-06 13:17:28
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-01-04 01:31:48
3	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-01-16 14:34:19
4	Ryan Huang	0.01 s	JavaScript (SpiderMonkey)	2016-02-24 00:36:52
5	Tim Oram	0.01 s	JavaScript (SpiderMonkey)	2016-03-19 20:20:12
6	Ricardas Vaitkus	0.01 s	JavaScript (SpiderMonkey)	2016-04-09 23:18:07
7	Hà Minh Ngọc	0.01 s	JavaScript (SpiderMonkey)	2016-07-28 03:10:49
8	Tor Nordqvist	0.01 s	JavaScript (SpiderMonkey)	2016-11-16 12:01:21
9	Johannes Tomasson	0.01 s	JavaScript (SpiderMonkey)	2017-02-21 06:44:53
10	Mats Krüger Svensson	0.01 s	JavaScript (SpiderMonkey)	2017-03-22 16:58:23

#	User	Runtime	Language	Date
1	Timothy Gaede	0.57 s	Julia	2024-04-03 13:16:14
2	Danny Robinson	0.64 s	Julia	2023-09-02 20:29:13

#	User	Runtime	Language	Date
1	Nicholas Johnson	0.12 s	Kotlin	2021-02-12 02:21:51
2	Thanh Le	0.12 s	Kotlin	2021-07-13 20:56:14
3	Dmitry Shostak	0.17 s	Kotlin	2018-08-19 18:25:28
4	Marcin Wiśniowski	0.17 s	Kotlin	2018-09-28 14:45:35
5	Dayan Ruben Gonzalez	0.18 s	Kotlin	2020-10-05 17:28:53
6	Danny Mittal	0.18 s	Kotlin	2021-02-12 02:20:05
7	Jackson Kubin	0.19 s	Kotlin	2021-11-30 23:50:47
8	Adam Rankin	0.19 s	Kotlin	2023-05-04 00:12:29
9	Eric Huynh	0.20 s	Kotlin	2019-02-03 02:27:34
10	Gabriel Novack	0.20 s	Kotlin	2020-09-24 19:15:07

#	User	Runtime	Language	Date
1	Caleb Austin	0.00 s	Lua	2024-09-20 22:28:13

#	User	Runtime	Language	Date
1	Yashdeep Singh	0.00 s	Nim	2024-11-12 05:15:42

#	User	Runtime	Language	Date
1	Philippe Hubert	0.01 s	PHP	2024-01-02 09:07:46
2	Kylind Reagan	0.01 s	PHP	2025-02-26 17:42:39

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2017-07-26 22:12:41

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Python 2	2014-09-28 02:00:00
2	Sergey Vovk	0.02 s	Python 2	2015-03-23 22:29:17
3	Christofer Ohlsson	0.02 s	Python 2	2015-04-29 16:40:41
4	Hans Rusten	0.02 s	Python 2	2015-10-21 23:29:38
5	Patrik Lilja	0.02 s	Python 2	2015-11-02 22:01:48
6	Urban Pettersson	0.02 s	Python 2	2015-11-14 19:09:48
7	Rafael Lozano	0.02 s	Python 2	2016-03-04 05:16:00
8	Olof Heurgren	0.02 s	Python 2	2016-03-29 19:42:22
9	Yash Chandarana	0.02 s	Python 2	2016-05-06 11:21:07
10	Yan Kalchevsky	0.02 s	Python 2	2016-12-24 20:53:21

#	User	Runtime	Language	Date
1	Andri Már Sigurðsson	0.02 s	Python 3	2014-12-01 14:02:27
2	Davíð Guðni Halldórsson	0.02 s	Python 3	2014-12-01 17:59:31
3	Einar Ágúst Árnason	0.02 s	Python 3	2014-12-02 12:35:24
4	Adrien Coulier	0.02 s	Python 3	2015-03-19 16:00:05
5	Vahid Sotudeh	0.02 s	Python 3	2015-06-23 16:37:28
6	Supreme Aryal	0.02 s	Python 3	2015-07-02 04:11:07
7	Fredrik Carlsen	0.02 s	Python 3	2015-07-24 20:23:36
8	Casper Hagenaars	0.02 s	Python 3	2015-08-17 19:03:37
9	Ben Land	0.02 s	Python 3	2015-09-05 08:24:53
10	Riwu Wang	0.02 s	Python 3	2015-09-05 08:51:16

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2016-01-27 15:14:15
2	Erik Rydbert	0.03 s	Ruby	2016-07-07 03:52:19
3	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-11-02 17:43:54
4	Rosa Gutierrez	0.05 s	Ruby	2022-05-01 20:29:28

#	User	Runtime	Language	Date
1	Zeke Stephens	0.00 s	Swift	2025-12-04 21:29:33

#	User	Runtime	Language	Date
1	Lori Lipkin	0.04 s	Visual Basic	2026-01-13 22:12:28

#	User	Length	Language	Date
1	Danny Robinson	201	Bash	2023-09-02 21:11:19
2	Chenzhang Hu	551	Bash	2024-02-03 07:42:05

#	User	Length	Language	Date
1	Phước Lưu	439	C	2016-06-14 13:43:56
2	Porfirio Ángel Díaz Sánchez	490	C	2016-02-26 21:06:34
3	Kiên Nguyễn	520	C	2016-06-14 05:44:45
4	Erick Raúl Ibarra Pérez	528	C	2016-02-26 23:17:10
5	Hidden user	578	C	2018-12-23 20:27:13
6	Martin Stensgård	583	C	2024-09-17 00:57:02
7	Roberto Solis Robles	584	C	2016-02-26 20:59:35
8	Petr Ryšavý	586	C	2015-02-24 18:58:44
9	Esteban Garcia	607	C	2016-02-26 21:05:34
10	Alejandro Torres Escalera	615	C	2016-02-29 09:10:41

#	User	Length	Language	Date
1	Bowen Yu	789	C#	2021-03-16 03:51:14
2	Nathan Andrews	1026	C#	2024-09-20 23:11:45
3	Владимир Хилько	1027	C#	2025-04-20 22:21:40
4	Hidden user	1073	C#	2017-09-28 22:20:32
5	Daouda Camara	1212	C#	2015-09-06 20:54:55
6	Ansgar224	1340	C#	2017-11-09 11:21:58
7	Marcin Dudek	1379	C#	2015-09-04 23:58:09
8	Joe Amenta	1410	C#	2014-10-26 02:35:38
9	Jon Wong	1429	C#	2015-10-03 02:48:17
10	Robert Low	1430	C#	2016-08-12 17:48:25

#	User	Length	Language	Date
1	Ahmed Chamseddine	309	C++	2022-11-18 17:03:10
2	Herman Karlsson	388	C++	2015-07-14 14:24:56
3	Sharat Sachin	406	C++	2018-06-07 15:29:41
4	Anton van Es	435	C++	2018-09-24 11:17:55
5	Sadegh Mahdavi	440	C++	2015-06-17 18:45:54
6	Ruben Van Dijck	442	C++	2019-02-10 15:37:26
7	Matteo Zappia	446	C++	2018-12-21 16:43:06
8	Lee Zheng Han	459	C++	2022-12-02 18:13:42
9	053 thousand	475	C++	2024-12-11 08:33:46
10	Tyler Fernando	477	C++	2023-06-19 11:10:16

#	User	Length	Language	Date
1	David Cawthon	1065	Common Lisp	2019-06-11 18:15:35

#	User	Length	Language	Date
1	dick move	511	Crystal	2025-09-28 17:36:13

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1074	F#	2023-06-25 15:38:52
2	Anders B. Clausen	1371	F#	2021-11-29 23:00:32

#	User	Length	Language	Date
1	Norbert Voelker	680	Go	2021-10-28 01:17:06
2	Krzysztof Gibuła	913	Go	2019-03-09 13:19:13
3	Việt Hà Nguyễn	961	Go	2016-06-18 19:56:40
4	Scott Dauer	1099	Go	2020-09-08 19:50:44
5	Jitesh Doshi	1120	Go	2022-05-28 18:29:32
6	Iker Lissarrague	1184	Go	2022-03-12 09:12:44
7	Eddy Wu	2165	Go	2018-12-23 09:04:36
8	Khin Nyunt	2522	Go	2023-09-09 18:29:42
9	Péter Szakszon	2680	Go	2021-12-18 09:53:54
10	Michal Sekletár	3399	Go	2015-07-06 12:48:11

#	User	Length	Language	Date
1	Alberto Cerezo Cid	521	Haskell	2018-10-26 19:40:05
2	Shinji Koshida	569	Haskell	2025-01-19 20:02:48
3	Zach Tschetter	638	Haskell	2020-12-13 05:28:06
4	Brent Yorgey	647	Haskell	2017-11-24 02:30:11
5	Hidden user	730	Haskell	2016-07-24 06:14:11
6	Christian Leipe	798	Haskell	2016-03-07 13:48:10
7	Isaac Arvestad	847	Haskell	2018-11-09 09:55:18
8	Sergio Martín Sempere	870	Haskell	2020-11-09 21:10:23
9	Patrick Bahr	919	Haskell	2018-11-24 17:31:50
10	Abel Martin	939	Haskell	2018-10-22 16:17:29

#	User	Length	Language	Date
1	Kurtis Van Gent	610	Java	2016-02-23 16:26:36
2	Noopur Jain	674	Java	2015-09-05 08:45:03
3	Brian Gathright	709	Java	2015-10-12 04:12:20
4	Doug Goodman	726	Java	2016-06-04 18:48:52
5	Abhi Gupta	756	Java	2018-01-04 14:01:51
6	Sam Bowers	766	Java	2023-09-21 17:33:02
7	Minh Truong	767	Java	2018-11-25 00:59:20
8	Minh Stature	774	Java	2016-08-24 11:04:41
9	Michael Hirsch	776	Java	2019-07-24 02:48:36
10	Carlos Fernández-Vegue García	786	Java	2019-04-02 08:10:27

#	User	Length	Language	Date
1	William Jackson	812	JavaScript (Node.js)	2019-03-11 20:37:41
2	Thomas Schauser	1009	JavaScript (Node.js)	2021-10-14 16:58:38
3	Mohamed Hosny Ahmed	1486	JavaScript (Node.js)	2019-11-04 20:56:16
4	Hidden user	2018	JavaScript (Node.js)	2024-11-10 04:53:33
5	Khin Nyunt	2441	JavaScript (Node.js)	2021-08-15 08:29:40

#	User	Length	Language	Date
1	Hà Minh Ngọc	594	JavaScript (SpiderMonkey)	2016-07-28 03:10:49
2	Peter Kedemo	696	JavaScript (SpiderMonkey)	2016-01-16 14:34:19
3	Ricardas Vaitkus	716	JavaScript (SpiderMonkey)	2016-04-09 23:18:07
4	Zachary DeStefano	867	JavaScript (SpiderMonkey)	2019-10-13 01:52:37
5	Christian Pilegaard Cederquist	893	JavaScript (SpiderMonkey)	2023-02-27 15:47:36
6	Tor Nordqvist	994	JavaScript (SpiderMonkey)	2016-11-16 12:01:21
7	Johannes Tomasson	1025	JavaScript (SpiderMonkey)	2017-02-21 06:44:53
8	Jan Järfalk	1116	JavaScript (SpiderMonkey)	2015-09-06 13:17:28
9	Omar Al-Khashab	1202	JavaScript (SpiderMonkey)	2018-04-25 05:46:13
10	Mats Krüger Svensson	1296	JavaScript (SpiderMonkey)	2017-03-22 16:58:23

#	User	Length	Language	Date
1	Danny Robinson	176	Julia	2023-09-02 20:29:13
2	Timothy Gaede	652	Julia	2024-04-03 13:16:14

#	User	Length	Language	Date
1	Dmitry Shostak	690	Kotlin	2018-08-19 18:25:28
2	Ali M. Nekoh	812	Kotlin	2025-05-21 21:21:16
3	Jackson Kubin	822	Kotlin	2021-11-30 23:50:47
4	Phường Lên	883	Kotlin	2019-11-29 19:32:02
5	Dayan Ruben Gonzalez	1065	Kotlin	2020-10-05 17:28:53
6	Gabriel Novack	1195	Kotlin	2020-09-24 19:27:26
7	Danny Mittal	1224	Kotlin	2021-02-12 02:20:05
8	Adam Rankin	1589	Kotlin	2023-05-04 00:12:29
9	Eric Huynh	1953	Kotlin	2019-02-03 02:27:34
10	Nicholas Johnson	2188	Kotlin	2021-02-12 02:21:51

#	User	Length	Language	Date
1	Caleb Austin	2185	Lua	2024-09-20 22:28:13

#	User	Length	Language	Date
1	Yashdeep Singh	1533	Nim	2024-11-12 05:15:42

#	User	Length	Language	Date
1	Kylind Reagan	1772	PHP	2025-02-26 17:42:39
2	Philippe Hubert	1793	PHP	2024-01-02 09:07:46

#	User	Length	Language	Date
1	Andriy Zyevakov	2237	Prolog	2017-07-26 22:12:41

#	User	Length	Language	Date
1	Chris Glasz	330	Python 2	2017-11-07 23:55:32
2	Måns Magnusson	361	Python 2	2018-03-16 22:44:00
3	Andreas Eisele	368	Python 2	2018-10-14 14:06:51
4	Yash Chandarana	379	Python 2	2016-05-06 11:21:07
5	Devin Kreuzer	379	Python 2	2019-11-24 01:45:28
6	Guan Yang Ze	381	Python 2	2019-09-09 05:02:01
7	Busetty Rajaram	393	Python 2	2018-10-17 09:29:48
8	Olof Heurgren	409	Python 2	2016-03-29 19:42:22
9	Justin Su	409	Python 2	2018-02-20 01:32:10
10	Andreas Björklund	415	Python 2	2019-05-07 19:26:07

#	User	Length	Language	Date
1	Benjamin Z White	195	Python 3	2023-05-01 12:42:11
2	David Llorens	228	Python 3	2025-04-17 16:36:51
3	Charles Ancheta	234	Python 3	2023-04-13 08:56:57
4	Yong Mao	235	Python 3	2023-07-19 03:11:27
5	Josh Taylor	247	Python 3	2023-03-06 17:30:52
6	Unnar Freyr Erlendsson	288	Python 3	2017-04-12 05:37:24
7	Gerth Stølting Brodal	288	Python 3	2020-02-03 00:32:33
8	Sarthak Agarwal	290	Python 3	2019-06-30 23:34:24
9	Filippo Baronello	293	Python 3	2020-10-24 20:01:29
10	Kyle Wells	294	Python 3	2023-12-31 00:19:00

#	User	Length	Language	Date
1	Erik Rydbert	459	Ruby	2016-07-07 03:52:19
2	Casper Christensen	825	Ruby	2016-01-27 15:14:15
3	Rosa Gutierrez	827	Ruby	2022-05-01 20:29:28
4	Macdara mac an tSionnaigh	1072	Ruby	2019-11-02 17:43:54

#	User	Length	Language	Date
1	Vasiliy Kevroletin	904	Rust	2025-08-29 03:31:54
2	David Rasch	1033	Rust	2021-05-07 21:47:13
3	Joe Blower	1057	Rust	2025-06-18 15:56:47
4	cairngorm fusk	1107	Rust	2022-03-10 06:57:28
5	Rik Bauwens	1123	Rust	2019-01-27 14:32:18
6	Vincent Lagerros	1160	Rust	2024-05-14 23:02:28
7	Fiat Driver	1204	Rust	2023-06-26 18:28:42
8	Paarth Madan	1233	Rust	2019-09-17 22:59:50
9	Eric Pinter	1640	Rust	2021-10-09 20:27:23
10	Per Westling	1795	Rust	2024-05-24 17:37:21

#	User	Length	Language	Date
1	Zeke Stephens	673	Swift	2025-12-04 21:29:33

#	User	Length	Language	Date
1	Lori Lipkin	1537	Visual Basic	2026-01-13 22:12:28

Solution running time distribution