Challenges

New Topic

434 topics

Page 1 of 9
- Jump to page:
1
2
3
4
5
…
9
Next

Topics

Replies

Views

Last post

Posting Guidelines

Last post by sanukayonal@123 « Thu Aug 21, 2025 4:01 pm
Replies: 6
by adum » Mon Jun 02, 2008 6:45 am

6 Replies

40442 Views

Last post by sanukayonal@123
Thu Aug 21, 2025 4:01 pm
Re: hacker.org revival

Last post by Jaymin « Tue Jan 06, 2026 12:28 pm

by Jaymin » Tue Jan 06, 2026 12:28 pm

0 Replies

24 Views

Last post by Jaymin
Tue Jan 06, 2026 12:28 pm
Resources to help with challenges?

Last post by NightFoxy « Mon May 05, 2025 5:50 pm
Replies: 21
by destiny » Sat Mar 14, 2015 1:29 pm
1

2
21 Replies

78075 Views

Last post by NightFoxy
Mon May 05, 2025 5:50 pm
Didactic Scrambled Egg Cipher Pre-Warmup

Last post by Aiyion.Prime « Tue Sep 26, 2023 3:35 pm
Replies: 5
by Meelo » Fri May 01, 2009 12:04 am

5 Replies

23551 Views

Last post by Aiyion.Prime
Tue Sep 26, 2023 3:35 pm
blood sweat tears

Last post by kumaryadav « Thu Mar 16, 2023 10:41 am
Replies: 11
by Caesum » Thu Mar 18, 2010 11:37 pm

11 Replies

30777 Views

Last post by kumaryadav
Thu Mar 16, 2023 10:41 am
Hacker Virtual Machine IDE

Last post by Col. Dump « Sun Aug 21, 2022 6:22 pm
Replies: 17
by Col. Dump » Thu Nov 20, 2008 2:06 am
1

2
17 Replies

41059 Views

Last post by Col. Dump
Sun Aug 21, 2022 6:22 pm
Didactic Text 4

Last post by DarthJim « Sat Aug 13, 2022 3:29 pm
Replies: 20
by horst » Mon Mar 09, 2009 11:01 am
1

2
20 Replies

65176 Views

Last post by DarthJim
Sat Aug 13, 2022 3:29 pm
Secure Room

Last post by AMindForeverVoyaging « Tue Jun 21, 2022 2:09 am
Replies: 25
by Allosentient » Sat Nov 22, 2008 6:18 pm
1

2
25 Replies

57804 Views

Last post by AMindForeverVoyaging
Tue Jun 21, 2022 2:09 am
Snake Arithmetic

Last post by tehron « Sat May 21, 2022 5:40 pm
Replies: 40
by Kikifax » Wed Nov 26, 2008 3:24 am
1

2

3
40 Replies

96826 Views

Last post by tehron
Sat May 21, 2022 5:40 pm
Your Turn, Part Two

Last post by Niker « Sun May 15, 2022 6:18 pm
Replies: 48
by rmplpmpl » Wed Nov 19, 2008 8:22 pm
1

2

3

4
48 Replies

92770 Views

Last post by Niker
Sun May 15, 2022 6:18 pm
Make Money Fast

Last post by outsider « Sun Mar 06, 2022 10:42 pm
Replies: 1
by outsider » Wed Feb 23, 2022 8:02 am

1 Replies

9795 Views

Last post by outsider
Sun Mar 06, 2022 10:42 pm
congrat me

Last post by official_musty_jikanjaji « Tue Mar 01, 2022 7:51 am

by official_musty_jikanjaji » Tue Mar 01, 2022 7:51 am

0 Replies

16909 Views

Last post by official_musty_jikanjaji
Tue Mar 01, 2022 7:51 am
Challenge:The Lightest Touch,Help me

Last post by lam « Thu Feb 17, 2022 9:31 am

by lam » Thu Feb 17, 2022 9:31 am

0 Replies

17579 Views

Last post by lam
Thu Feb 17, 2022 9:31 am
Tiny sort

Last post by a.goth « Thu Dec 02, 2021 6:34 pm
Replies: 3
by Hippo » Mon Mar 07, 2016 1:40 pm

3 Replies

15611 Views

Last post by a.goth
Thu Dec 02, 2021 6:34 pm
Lazy Maze

Last post by shantz « Sun Oct 24, 2021 5:05 pm
Replies: 30
by Grammaton » Sat Nov 08, 2008 8:58 pm
1

2

3
30 Replies

69220 Views

Last post by shantz
Sun Oct 24, 2021 5:05 pm
Not Smaller Yet

Last post by jake1001 « Tue Apr 27, 2021 10:16 am
Replies: 2
by helly0d » Sat Feb 06, 2021 3:44 pm

2 Replies

15091 Views

Last post by jake1001
Tue Apr 27, 2021 10:16 am
Tiny Sentence Reversal

Last post by Hippo « Fri Feb 12, 2021 5:15 pm
Replies: 1
by Hippo » Thu Feb 11, 2021 12:59 am

1 Replies

14792 Views

Last post by Hippo
Fri Feb 12, 2021 5:15 pm
Superhack multithreading stack error?

Last post by Hippo « Tue Feb 09, 2021 5:52 pm
Replies: 2
by W0F » Wed Mar 13, 2013 1:07 am

2 Replies

15956 Views

Last post by Hippo
Tue Feb 09, 2021 5:52 pm
Matrix Recoded

Last post by Hippo « Sun Feb 07, 2021 9:59 pm
Replies: 5
by TheBigBoss » Tue Sep 06, 2016 6:03 pm

5 Replies

25161 Views

Last post by Hippo
Sun Feb 07, 2021 9:59 pm
Portal to the Future

Last post by spaeg « Fri Feb 05, 2021 1:55 pm
Replies: 5
by spaeg » Sun Aug 23, 2015 6:15 am

5 Replies

26076 Views

Last post by spaeg
Fri Feb 05, 2021 1:55 pm
Dungeon Master

Last post by AMindForeverVoyaging « Sun Jan 31, 2021 10:22 am
Replies: 66
by Crunch » Thu Nov 20, 2008 2:28 pm
1

2

3

4

5
66 Replies

158316 Views

Last post by AMindForeverVoyaging
Sun Jan 31, 2021 10:22 am
Cavern Master

Last post by AMindForeverVoyaging « Sun Jan 17, 2021 3:20 pm
Replies: 45
by Kuzmin » Sat Sep 13, 2008 11:29 am
1

2

3

4
45 Replies

124451 Views

Last post by AMindForeverVoyaging
Sun Jan 17, 2021 3:20 pm
Didactic Scrambled Egg Cipher Pre-Warmup Challenge

Last post by Niker « Sat Dec 26, 2020 8:59 pm
Replies: 26
by snibril » Wed Nov 05, 2008 2:33 pm
1

2
26 Replies

68393 Views

Last post by Niker
Sat Dec 26, 2020 8:59 pm
Latin Lesson

Last post by Niker « Mon Nov 02, 2020 9:14 pm
Replies: 11
by MyNameIsAlreadyTaken » Fri Oct 22, 2010 3:41 pm

11 Replies

37373 Views

Last post by Niker
Mon Nov 02, 2020 9:14 pm
Did not refresh the next level

Last post by aZ_5 « Sun Oct 25, 2020 4:06 am

by aZ_5 » Sun Oct 25, 2020 4:06 am

0 Replies

20636 Views

Last post by aZ_5
Sun Oct 25, 2020 4:06 am
Challenge 'Didactic Scrambled Egg Cipher' [Crypto] BROKEN!

Last post by outsider « Sat Oct 10, 2020 10:31 am
Replies: 4
by Kami » Thu Nov 06, 2014 8:30 am

4 Replies

21566 Views

Last post by outsider
Sat Oct 10, 2020 10:31 am
Eniac

Last post by Deamhan « Sat May 23, 2020 12:46 pm
Replies: 27
by megabreit » Fri Jan 30, 2009 7:56 pm
1

2
27 Replies

65987 Views

Last post by Deamhan
Sat May 23, 2020 12:46 pm
Sounds Same Warmup

Last post by eulerscheZahl « Wed Apr 29, 2020 6:12 pm
Replies: 8
by MagneticMonopole » Sat Feb 14, 2009 10:08 am

8 Replies

28245 Views

Last post by eulerscheZahl
Wed Apr 29, 2020 6:12 pm
forced entry

Last post by AMindForeverVoyaging « Sat Apr 11, 2020 8:08 am
Replies: 2
by gsjfoe » Sat Jan 15, 2011 3:35 pm

2 Replies

17451 Views

Last post by AMindForeverVoyaging
Sat Apr 11, 2020 8:08 am
Duke Box

Last post by argyblarg « Thu Feb 13, 2020 7:35 pm
Replies: 26
by smutley » Sun Aug 08, 2010 12:08 am
1

2
26 Replies

65358 Views

Last post by argyblarg
Thu Feb 13, 2020 7:35 pm
Test

Last post by lvhao945 « Wed Feb 05, 2020 10:45 am
Replies: 3
by AMindForeverVoyaging » Sat Jan 04, 2020 12:16 pm

3 Replies

16333 Views

Last post by lvhao945
Wed Feb 05, 2020 10:45 am
Deja Vu impossible?

Last post by yes-man « Thu Nov 14, 2019 4:21 pm
Replies: 14
by konsi » Thu Dec 18, 2008 3:13 am

14 Replies

34328 Views

Last post by yes-man
Thu Nov 14, 2019 4:21 pm
Deluge

Last post by Hippo « Fri Jun 21, 2019 4:27 pm
Replies: 7
by tails » Thu Jul 10, 2008 11:27 am

7 Replies

30178 Views

Last post by Hippo
Fri Jun 21, 2019 4:27 pm
Deluge

Last post by Hippo « Mon Jun 17, 2019 10:26 am
Replies: 7
by therethinker » Mon Dec 08, 2008 10:17 pm

7 Replies

26213 Views

Last post by Hippo
Mon Jun 17, 2019 10:26 am
Deluge

Last post by Hippo « Mon Jun 17, 2019 10:15 am
Replies: 17
by laz0r » Sun Aug 21, 2011 3:04 pm
1

2
17 Replies

48635 Views

Last post by Hippo
Mon Jun 17, 2019 10:15 am
Filtration Residue

Last post by Hippo « Tue Apr 09, 2019 7:34 am
Replies: 24
by horst » Thu Oct 01, 2009 10:37 am
1

2
24 Replies

60743 Views

Last post by Hippo
Tue Apr 09, 2019 7:34 am
V.I.L.E.

Last post by Garden_of_Eden « Sat Apr 06, 2019 3:31 pm
Replies: 15
by cutter » Tue Mar 24, 2009 4:15 pm
1

2
15 Replies

54264 Views

Last post by Garden_of_Eden
Sat Apr 06, 2019 3:31 pm
Communicaton of the Past

Last post by g3n35i5 « Mon Mar 04, 2019 4:57 pm
Replies: 4
by g3n35i5 » Fri Mar 01, 2019 4:26 pm

4 Replies

17791 Views

Last post by g3n35i5
Mon Mar 04, 2019 4:57 pm
childish

Last post by g3n35i5 « Mon Mar 04, 2019 7:44 am
Replies: 8
by kaste » Sat Jan 26, 2013 3:46 pm

8 Replies

28157 Views

Last post by g3n35i5
Mon Mar 04, 2019 7:44 am
Find me

Last post by AMindForeverVoyaging « Sun Jan 27, 2019 2:12 pm
Replies: 21
by DanielG » Thu Jan 29, 2009 1:22 pm
1

2
21 Replies

62146 Views

Last post by AMindForeverVoyaging
Sun Jan 27, 2019 2:12 pm
Not Chess

Last post by MindFreakz « Sun Jan 20, 2019 10:16 pm
Replies: 16
by Allosentient » Fri Jun 06, 2008 4:34 am
1

2
16 Replies

56743 Views

Last post by MindFreakz
Sun Jan 20, 2019 10:16 pm
Challenge 'I'm So Special'

Last post by AMindForeverVoyaging « Mon Dec 31, 2018 4:20 pm
Replies: 8
by wicherh » Sun Jan 25, 2009 10:16 pm

8 Replies

32324 Views

Last post by AMindForeverVoyaging
Mon Dec 31, 2018 4:20 pm
One Minute Man with AJAX

Last post by spaeg « Mon Nov 26, 2018 12:26 am
Replies: 1
by spaeg » Fri Nov 23, 2018 1:00 pm

1 Replies

15235 Views

Last post by spaeg
Mon Nov 26, 2018 12:26 am
What in the world

Last post by TheBigBoss « Sat Nov 24, 2018 10:23 am
Replies: 20
by AMindForeverVoyaging » Fri Aug 05, 2011 6:53 pm
1

2
20 Replies

53698 Views

Last post by TheBigBoss
Sat Nov 24, 2018 10:23 am
Didactic Scrambled Egg Cipher Warmup

Last post by AMindForeverVoyaging « Sun Nov 18, 2018 12:16 am
Replies: 8
by Mütze » Sun Jun 07, 2009 12:32 pm

8 Replies

29171 Views

Last post by AMindForeverVoyaging
Sun Nov 18, 2018 12:16 am
Didactic Feedback Cipher

Last post by Hippo « Wed Jul 04, 2018 6:19 am
Replies: 23
by MerickOWA » Wed Oct 15, 2008 1:41 am
1

2
23 Replies

61087 Views

Last post by Hippo
Wed Jul 04, 2018 6:19 am
Acoustic Melodic

Last post by biogood « Mon Jul 02, 2018 2:27 am
Replies: 2
by Tron » Sun Feb 06, 2011 3:30 pm

2 Replies

20611 Views

Last post by biogood
Mon Jul 02, 2018 2:27 am
Spiral Bits

Last post by MrTerry « Sun Jun 17, 2018 12:44 pm
Replies: 38
by m!nus » Mon Dec 15, 2008 7:56 pm
1

2

3
38 Replies

95684 Views

Last post by MrTerry
Sun Jun 17, 2018 12:44 pm
Challenge 'File Mystery

Last post by one.kamila « Wed Jun 13, 2018 3:23 pm
Replies: 20
by hunter » Wed Jun 25, 2008 2:58 pm
1

2
20 Replies

66082 Views

Last post by one.kamila
Wed Jun 13, 2018 3:23 pm
Didactic XOR Cipher 3

Last post by AMindForeverVoyaging « Sat May 26, 2018 1:44 pm
Replies: 35
by MerickOWA » Thu Oct 09, 2008 3:33 pm
1

2

3
35 Replies

91176 Views

Last post by AMindForeverVoyaging
Sat May 26, 2018 1:44 pm

New Topic

434 topics

Page 1 of 9
- Jump to page:
1
2
3
4
5
…
9
Next

Return to Board Index

Forum permissions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum