Problem J
Chess — Problem Statistics

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Submissions	7067
Accepted submissions	2282
Submission ratio	32.29%
Authors	2101
Full solves [?]	1806
Full solve Ratio	85.96%

#	User	Runtime	Language	Date
1	Przemysław Curzytek	0.03 s	C#	2016-11-07 04:18:52
2	Hidden user	0.03 s	C#	2017-04-17 18:58:05
3	Gustav Kalander	0.03 s	C#	2018-05-13 20:25:41
4	Joel Luis Chambilla Renjel	0.03 s	C#	2019-04-03 18:31:07
5	Raul Gamarra	0.03 s	C#	2019-04-05 14:04:10
6	Carl Magnusson	0.03 s	C#	2019-06-10 16:20:22
7	Hidden user	0.04 s	C#	2017-09-07 20:33:51
8	Dave Campbell	0.04 s	C#	2023-04-01 00:59:24
9	Khin Nyunt	0.05 s	C#	2017-01-01 12:54:35
10	Dieter Portanda	0.05 s	C#	2019-04-05 15:02:02

#	User	Runtime	Language	Date
1	Norbert Voelker	0.03 s	Go	2021-09-16 23:33:28
2	Ola Dahl	0.04 s	Go	2023-01-27 20:23:34
3	Khin Nyunt	0.06 s	Go	2023-09-14 04:23:55
4	JR	0.10 s	Go	2019-06-09 21:25:41
5	Johan Irvall Rasmussen	0.10 s	Go	2019-06-10 10:44:18
6	Việt Hà Nguyễn	0.11 s	Go	2016-06-15 16:57:55

#	User	Runtime	Language	Date
1	Johan H	0.01 s	Haskell	2017-05-10 20:00:42
2	Dmitrii Sapelkin	0.01 s	Haskell	2019-06-13 13:01:54
3	Hidden user	0.01 s	Haskell	2022-06-16 15:39:32
4	Steinar Simonnes	0.01 s	Haskell	2025-06-23 06:44:36
5	Morgan Hopkins	0.02 s	Haskell	2015-12-23 03:24:10
6	Brent Yorgey	0.02 s	Haskell	2018-10-21 19:47:42
7	Zach Tschetter	0.02 s	Haskell	2019-03-29 01:27:36
8	Matthew Gvasalia	0.02 s	Haskell	2023-05-03 15:14:05
9	Li Jun	0.02 s	Haskell	2023-06-22 17:00:53
10	Vegard Itland	0.03 s	Haskell	2017-08-24 20:57:34

#	User	Runtime	Language	Date
1	Niu Xinyuan	0.07 s	Java	2018-07-25 09:59:48
2	Bjørn Dons	0.07 s	Java	2018-10-19 18:08:08
3	Sven Rönnbäck	0.07 s	Java	2022-04-15 13:47:26
4	Martijn Muijsers	0.08 s	Java	2016-11-02 12:23:13
5	Nguyễn Hùng Cường	0.08 s	Java	2018-07-05 06:16:36
6	Sam Reinehr	0.08 s	Java	2018-10-17 01:49:12
7	Joel Vikström	0.09 s	Java	2016-11-19 10:02:30
8	Dat Vo Nguyen Tien	0.09 s	Java	2022-01-30 09:02:54
9	Axel Nilsson	0.09 s	Java	2023-07-10 19:14:04
10	Miles Stevenson	0.10 s	Java	2015-07-01 00:16:38

#	User	Runtime	Language	Date
1	Daniel Crosby	0.12 s	JavaScript (Node.js)	2024-04-22 16:19:42
2	Angelo Gazzola	0.15 s	JavaScript (Node.js)	2024-03-31 11:03:48
3	André Lehto	0.16 s	JavaScript (Node.js)	2019-02-23 14:47:02
4	Dominika Dembska	0.16 s	JavaScript (Node.js)	2024-07-15 16:03:52
5	Alex Wendte	0.20 s	JavaScript (Node.js)	2019-03-31 05:05:03
6	Khin Nyunt	0.54 s	JavaScript (Node.js)	2021-11-14 13:59:47
7	Daniel Cabral	0.55 s	JavaScript (Node.js)	2020-03-21 14:16:01

#	User	Runtime	Language	Date
1	Johannes Jensen	0.02 s	JavaScript (SpiderMonkey)	2016-03-05 14:19:48
2	Ionel Hindorean	0.02 s	JavaScript (SpiderMonkey)	2016-12-04 19:55:44
3	Dilawar Mahmood	0.02 s	JavaScript (SpiderMonkey)	2018-01-22 20:16:36
4	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2016-02-20 22:32:00
5	Zachary DeStefano	0.04 s	JavaScript (SpiderMonkey)	2018-10-29 19:21:03
6	André Lehto	0.04 s	JavaScript (SpiderMonkey)	2019-02-22 00:12:25
7	Hidden user	0.04 s	JavaScript (SpiderMonkey)	2021-01-22 16:25:58
8	Christian Pilegaard Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-03-01 19:44:45
9	Robin Guan	0.05 s	JavaScript (SpiderMonkey)	2019-03-11 05:30:05
10	Peter Kedemo	0.35 s	JavaScript (SpiderMonkey)	2016-02-20 19:50:58

#	User	Runtime	Language	Date
1	Timothy Gaede	0.76 s	Julia	2024-06-26 06:11:05

#	User	Runtime	Language	Date
1	Sam Keyser	0.19 s	Kotlin	2022-06-22 20:02:12
2	Hidden user	0.25 s	Kotlin	2020-02-05 21:41:26
3	Ravisai Tiruvuri	0.27 s	Kotlin	2024-03-15 12:37:18
4	Ashish Singh	0.33 s	Kotlin	2023-01-24 07:12:31
5	Phường Lên	0.35 s	Kotlin	2020-03-30 01:47:41
6	Wojciech T	0.37 s	Kotlin	2023-11-17 15:12:12
7	Johnny Baloney	0.55 s	Kotlin	2021-10-31 21:21:56
8	Adam Koprowski	0.58 s	Kotlin	2020-10-16 21:30:12
9	Terairk	0.68 s	Kotlin	2023-12-06 13:21:56
10	Max Holmberg	0.92 s	Kotlin	2023-12-30 12:37:37

#	User	Runtime	Language	Date
1	Junyu Zhan	0.01 s	Odin	2026-01-11 09:04:54

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2019-03-07 10:04:32

#	User	Runtime	Language	Date
1	Denis BAURAIN	0.02 s	Perl	2026-01-04 19:22:36

#	User	Runtime	Language	Date
1	Susanne Ragnemalm	0.02 s	PHP	2018-04-25 09:36:40

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.04 s	Prolog	2019-05-17 18:05:23
2	Jesper Amilon	0.07 s	Prolog	2020-08-06 14:01:29

#	User	Runtime	Language	Date
1	Mark Snow	0.07 s	Python 2	2016-12-06 20:35:32
2	Andrew Evans	0.07 s	Python 2	2018-09-11 22:35:38
3	Gustav Krantz	0.07 s	Python 2	2018-10-07 11:13:36
4	Sergey Vovk	0.08 s	Python 2	2015-03-25 06:23:12
5	Christofer Ohlsson	0.08 s	Python 2	2016-06-04 18:43:47
6	MrKatofa	0.08 s	Python 2	2017-05-10 20:08:24
7	Easton Bornemeier	0.08 s	Python 2	2018-03-09 21:40:13
8	Kristin Farris	0.08 s	Python 2	2018-03-09 22:08:10
9	Dario Vidas	0.09 s	Python 2	2016-02-04 20:46:48
10	Gaurav Kumar	0.10 s	Python 2	2015-04-16 13:36:21

#	User	Runtime	Language	Date
1	Jari Leskinen	0.03 s	Python 3	2015-09-30 21:18:39
2	Luke Winship	0.03 s	Python 3	2016-10-14 20:01:11
3	Oliver Richardson	0.03 s	Python 3	2016-11-07 01:05:34
4	Ram Basnet	0.03 s	Python 3	2017-11-13 06:31:12
5	Andrew McGehee	0.03 s	Python 3	2018-06-03 23:19:45
6	Samo Metličar	0.03 s	Python 3	2018-11-18 17:55:07
7	Hidden user	0.03 s	Python 3	2019-04-02 09:48:42
8	Alfred Olsson	0.03 s	Python 3	2019-07-22 13:11:25
9	Hidden user	0.03 s	Python 3	2019-09-09 02:16:56
10	Will Belote	0.03 s	Python 3	2019-09-11 18:44:26

#	User	Runtime	Language	Date
1	Rosa Gutierrez	0.07 s	Ruby	2022-05-02 06:49:55
2	Thomas Feld	0.07 s	Ruby	2023-05-10 08:22:45
3	Mridula Prabhu	0.15 s	Ruby	2019-04-03 18:16:38

#	User	Runtime	Language	Date
1	Got Yaoi	0.00 s	Rust	2019-01-26 02:14:50
2	Ryan O'Hara	0.00 s	Rust	2020-08-21 05:37:46
3	Pahlevi Fikri Auliya	0.00 s	Rust	2020-10-14 23:41:31
4	Christofer Nolander	0.01 s	Rust	2018-11-15 19:59:09
5	Hidden user	0.01 s	Rust	2019-03-26 19:07:30
6	Bas Dirks	0.01 s	Rust	2022-01-23 16:12:11
7	Isak Jägberg	0.01 s	Rust	2023-03-28 13:05:43
8	jaswanth	0.01 s	Rust	2024-03-09 07:55:31
9	Joe Blower	0.01 s	Rust	2025-12-27 03:25:15
10	Mathias Magnusson	0.02 s	Rust	2019-06-12 12:47:39

#	User	Runtime	Language	Date
1	Tinus Greyling	0.10 s	TypeScript	2025-03-08 10:12:47

#	User	Length	Language	Date
1	Erasmus Cedernaes	968	C	2015-11-24 18:20:40
2	Ivan Petrov	1073	C	2019-09-18 07:41:51
3	Josef Van V	1108	C	2026-03-08 04:27:54
4	Alex Gajewski	1192	C	2016-04-30 17:56:11
5	Sergio Huhuhu	1251	C	2022-09-20 04:50:18
6	Raymond Yang	1325	C	2021-06-13 18:27:42
7	Sambit Palit	1370	C	2020-11-09 01:35:09
8	Đào Vũ Tuấn	1395	C	2016-09-09 05:40:52
9	Andrew Roberts	1457	C	2019-06-07 21:10:01
10	Phan Ngoc Lan	1491	C	2016-06-15 00:28:10

#	User	Length	Language	Date
1	Rasmus Leifsgård	1743	C#	2025-12-09 10:10:49
2	Elmer Blixt	1907	C#	2024-06-13 17:19:07
3	Dave Campbell	1956	C#	2023-04-01 00:59:24
4	marizet human	2102	C#	2024-09-15 15:35:51
5	Hidden user	2328	C#	2017-09-07 20:33:51
6	Fredrik Blixt	2331	C#	2025-04-05 13:47:50
7	Sabah Alsaleh	2414	C#	2025-03-08 23:54:53
8	Jodie Jenecker	2473	C#	2024-09-30 13:21:45
9	Theodore Dahlqvist	2521	C#	2026-02-11 03:43:07
10	Naveen Seerapu	2646	C#	2021-02-14 10:32:22

#	User	Length	Language	Date
1	Mugeon Kim	635	C++	2024-01-17 12:33:30
2	吳宗達	636	C++	2017-10-13 09:49:18
3	Shivang Paliwal	696	C++	2023-01-21 09:14:29
4	Hidden user	701	C++	2024-09-19 15:24:45
5	Johan Wind	711	C++	2015-09-14 21:57:32
6	Li Yao'an	722	C++	2017-01-11 15:10:34
7	Ziad Hassan	730	C++	2022-06-18 17:35:56
8	Danh Tran	732	C++	2018-06-11 12:45:22
9	Fabio Giovanazzi	739	C++	2021-11-15 20:43:53
10	Asmod B	739	C++	2022-01-11 06:49:35

#	User	Length	Language	Date
1	Norbert Voelker	1374	Go	2021-09-16 23:33:28
2	Johan Irvall Rasmussen	1401	Go	2019-06-10 10:44:18
3	Việt Hà Nguyễn	1436	Go	2016-06-15 16:57:55
4	JR	1579	Go	2019-06-09 21:25:41
5	Khin Nyunt	1906	Go	2023-09-14 04:23:55
6	Ola Dahl	4092	Go	2023-01-27 20:23:34

#	User	Length	Language	Date
1	Dmitrii Sapelkin	1009	Haskell	2019-06-13 13:01:54
2	Steinar Simonnes	1481	Haskell	2025-06-23 06:45:50
3	Li Jun	1555	Haskell	2023-06-22 17:16:49
4	Zach Tschetter	1574	Haskell	2019-03-29 01:27:36
5	Matthew Gvasalia	1632	Haskell	2023-05-03 15:14:05
6	Morgan Hopkins	1848	Haskell	2015-12-23 03:24:10
7	Brent Yorgey	1875	Haskell	2018-10-21 19:47:42
8	Johan H	2155	Haskell	2017-05-10 20:00:42
9	Vegard Itland	2228	Haskell	2017-08-24 20:57:34
10	Hidden user	2390	Haskell	2022-06-16 15:39:32

#	User	Length	Language	Date
1	Doug Goodman	1013	Java	2016-06-08 18:24:49
2	Kurtis Van Gent	1145	Java	2016-02-23 19:59:15
3	Simon Xue	1197	Java	2016-02-28 09:15:14
4	Jiru Xu	1244	Java	2017-10-15 17:27:28
5	Dhnguyen Nguyen	1253	Java	2016-09-07 08:30:14
6	Michael Stephen Skalak	1274	Java	2016-11-08 13:23:11
7	Niu Xinyuan	1295	Java	2018-07-25 09:59:48
8	Ranjith M	1304	Java	2021-03-14 05:57:03
9	Stephen Royal	1312	Java	2015-08-18 17:24:32
10	Benjamin Laurence Erickson	1312	Java	2016-02-26 00:39:37

#	User	Length	Language	Date
1	Dominika Dembska	1912	JavaScript (Node.js)	2024-07-15 16:03:52
2	Khin Nyunt	1954	JavaScript (Node.js)	2021-09-23 15:28:25
3	André Lehto	2758	JavaScript (Node.js)	2019-02-23 14:47:02
4	Angelo Gazzola	2836	JavaScript (Node.js)	2024-03-31 11:03:48
5	Daniel Crosby	4029	JavaScript (Node.js)	2024-04-22 16:19:42
6	Alex Wendte	4791	JavaScript (Node.js)	2019-03-31 05:05:03
7	Daniel Cabral	5963	JavaScript (Node.js)	2020-03-21 14:16:01

#	User	Length	Language	Date
1	Zachary DeStefano	1486	JavaScript (SpiderMonkey)	2018-10-29 19:21:03
2	Johannes Jensen	1518	JavaScript (SpiderMonkey)	2016-03-05 14:19:48
3	Christian Pilegaard Cederquist	1534	JavaScript (SpiderMonkey)	2023-03-01 19:44:45
4	Peter Kedemo	2009	JavaScript (SpiderMonkey)	2016-02-20 19:50:58
5	Bjørn Chr. Soltvedt	2026	JavaScript (SpiderMonkey)	2016-02-20 22:32:00
6	Hidden user	2553	JavaScript (SpiderMonkey)	2021-01-22 16:25:58
7	Robin Guan	3495	JavaScript (SpiderMonkey)	2019-03-11 05:30:05
8	Ionel Hindorean	4525	JavaScript (SpiderMonkey)	2016-12-04 19:55:44
9	Dilawar Mahmood	4585	JavaScript (SpiderMonkey)	2018-01-22 20:16:36
10	André Lehto	4585	JavaScript (SpiderMonkey)	2019-02-22 00:12:25

#	User	Length	Language	Date
1	Timothy Gaede	3058	Julia	2024-06-26 06:11:05

#	User	Length	Language	Date
1	Adam Koprowski	1534	Kotlin	2020-10-16 21:30:12
2	Johnny Baloney	1580	Kotlin	2021-10-31 21:26:23
3	Ashish Singh	1651	Kotlin	2023-01-24 07:12:31
4	Sam Keyser	1741	Kotlin	2022-06-22 20:02:12
5	Hidden user	2527	Kotlin	2020-02-05 21:41:26
6	Wojciech T	2646	Kotlin	2023-11-17 15:12:12
7	Phường Lên	2679	Kotlin	2020-03-30 01:47:41
8	Max Holmberg	3019	Kotlin	2023-12-30 12:37:37
9	Terairk	4503	Kotlin	2023-12-06 13:21:56
10	Ravisai Tiruvuri	6573	Kotlin	2024-03-15 12:37:18

#	User	Length	Language	Date
1	Junyu Zhan	1463	Odin	2026-01-11 09:04:54

#	User	Length	Language	Date
1	Ingemar Ragnemalm	1895	Pascal	2019-03-07 10:04:32

#	User	Length	Language	Date
1	Denis BAURAIN	1405	Perl	2026-01-04 19:27:16

#	User	Length	Language	Date
1	Susanne Ragnemalm	1978	PHP	2018-04-25 09:36:40

#	User	Length	Language	Date
1	Andriy Zyevakov	1728	Prolog	2019-05-17 18:05:23
2	Jesper Amilon	3805	Prolog	2020-08-06 14:01:29

#	User	Length	Language	Date
1	Thomas Feld	543	Python 2	2019-09-06 08:03:14
2	Sivasankaran D	890	Python 2	2026-03-12 01:40:55
3	Tore Norderud	959	Python 2	2015-05-14 18:37:17
4	Mark Snow	962	Python 2	2016-12-06 20:35:32
5	Andreas Björklund	990	Python 2	2021-11-17 15:44:42
6	Patrik Lilja	1009	Python 2	2015-05-21 16:31:54
7	Ciara Godwin	1012	Python 2	2018-09-02 19:51:08
8	Cian Ruane	1053	Python 2	2018-09-02 19:16:37
9	Vegard Berge	1063	Python 2	2019-08-26 08:52:30
10	Jason Cannon	1073	Python 2	2019-12-17 22:02:05

#	User	Length	Language	Date
1	Ben Zydney	272	Python 3	2024-09-11 19:16:56
2	Lennart Meyling	318	Python 3	2024-09-15 15:20:17
3	Ahmed Chamseddine	349	Python 3	2025-06-24 12:15:17
4	Yong Mao	397	Python 3	2023-10-15 03:07:48
5	Charles Ancheta	414	Python 3	2023-03-30 05:32:46
6	Si Jie Tan	502	Python 3	2026-01-05 23:28:22
7	Thibault Raffaillac	570	Python 3	2020-01-26 19:58:39
8	Chayapol Chaoveeraprasit	570	Python 3	2022-05-23 11:49:39
9	Alexandre Charland	572	Python 3	2025-06-30 22:30:34
10	Nicholas Russell Saerang	653	Python 3	2023-12-16 14:53:01

#	User	Length	Language	Date
1	Thomas Feld	192	Ruby	2023-05-10 08:47:44
2	Rosa Gutierrez	1605	Ruby	2022-05-02 06:49:55
3	Mridula Prabhu	4713	Ruby	2019-04-03 18:16:38

#	User	Length	Language	Date
1	Got Yaoi	1515	Rust	2019-01-26 01:25:17
2	Mathias Magnusson	2095	Rust	2019-06-12 12:47:39
3	Bas Dirks	2337	Rust	2022-01-23 16:12:11
4	Christofer Nolander	3040	Rust	2018-11-15 19:59:09
5	Joe Blower	3454	Rust	2025-12-27 03:25:15
6	Pahlevi Fikri Auliya	3517	Rust	2020-10-14 23:47:54
7	Ryan O'Hara	3626	Rust	2020-08-21 04:04:57
8	Mathias	4131	Rust	2022-06-20 16:50:00
9	jaswanth	4196	Rust	2024-03-09 07:55:31
10	Isak Jägberg	4639	Rust	2023-03-28 13:05:43

#	User	Length	Language	Date
1	Tinus Greyling	4456	TypeScript	2025-03-08 10:12:47

Solution running time distribution