All Contributions

Complete record of every solution change. Each contribution is peer-reviewed.

Contribute

19820 contributions

1934 problems

98 contributors

solved· 10.1.28 in 1 minute 34 seconds

10.1.28 edit

naz June 15, 2026 at 08:25 PM

#18863

10.1.28 edit

naz June 15, 2026 at 08:23 PM

#18862

less than a minute between problems

solved· 10.1.25 in 1 minute 59 seconds

10.1.25 edit

naz June 15, 2026 at 08:22 PM

#18861

10.1.25 edit

naz June 15, 2026 at 08:20 PM

#18860

2 minutes between problems

solved· 10.1.29 in 50 seconds

10.1.29 edit

naz June 15, 2026 at 08:18 PM

#18859

10.1.29 new solution

naz June 15, 2026 at 08:17 PM

#18858

4 minutes between problems

solved· 10.1.28 in 2 minutes 11 seconds

10.1.28 edit

naz June 15, 2026 at 08:13 PM

#18857

10.1.28 new solution

naz June 15, 2026 at 08:11 PM

#18856

11 minutes between problems

solved· 10.1.25 in 2 minutes 28 seconds

10.1.25 edit

naz June 15, 2026 at 07:59 PM

#18855

10.1.25 new solution

naz June 15, 2026 at 07:57 PM

#18854

7 minutes between problems

solved· 10.1.27 in 5 minutes 17 seconds

10.1.27 edit

emixter June 15, 2026 at 07:49 PM

#18853

10.1.27 edit

emixter June 15, 2026 at 07:44 PM

#18852

20 minutes between problems

solved· 10.1.24

10.1.24 edit

naz June 15, 2026 at 07:23 PM

#18851

less than a minute between problems

solved· 8.1.20

8.1.20 edit

Alexphysics June 15, 2026 at 07:23 PM

#18850

less than a minute between problems

solved· 10.1.22

10.1.22 edit

naz June 15, 2026 at 07:22 PM

#18849

less than a minute between problems

solved· 8.1.20

8.1.20 edit

Alexphysics June 15, 2026 at 07:22 PM

#18848

1 minute between problems

solved· 10.1.24 in 59 seconds

10.1.24 edit

naz June 15, 2026 at 07:20 PM

#18847

10.1.24 edit

naz June 15, 2026 at 07:20 PM

#18846

10.1.24 edit

naz June 15, 2026 at 07:19 PM

#18845

less than a minute between problems

solved· 10.1.22 in 2 minutes 13 seconds

10.1.22 edit

naz June 15, 2026 at 07:19 PM

#18844

10.1.22 edit

naz June 15, 2026 at 07:18 PM

#18843

10.1.22 edit

naz June 15, 2026 at 07:17 PM

#18842

10.1.22 edit

naz June 15, 2026 at 07:17 PM

#18841

less than a minute between problems

solved· 10.1.24 in 3 minutes 13 seconds

10.1.24 edit

naz June 15, 2026 at 07:16 PM

#18840

10.1.24 new solution

naz June 15, 2026 at 07:12 PM

#18839

8 minutes between problems

solved· 8.1.20

8.1.20 new solution

Alexphysics June 15, 2026 at 07:04 PM

#18838

7 minutes between problems

solved· 10.1.19 in 19 seconds

10.1.19 edit

naz June 15, 2026 at 06:56 PM

#18837

10.1.19 edit

naz June 15, 2026 at 06:56 PM

#18836

less than a minute between problems

solved· 10.1.22 in 1 minute 39 seconds

10.1.22 edit

naz June 15, 2026 at 06:56 PM

#18835

10.1.22 new solution

naz June 15, 2026 at 06:54 PM

#18834

2 minutes between problems

solved· 14.4.23

14.4.23 edit

JAMF June 15, 2026 at 06:52 PM

#18833

7 minutes between problems

solved· 10.1.19 in 1 minute 40 seconds

10.1.19 edit

naz June 15, 2026 at 06:44 PM

#18832

10.1.19 edit

naz June 15, 2026 at 06:42 PM

#18831

1 hour 39 minutes between problems

solved· 11.4.9 in 26 minutes 15 seconds

11.4.9 edit

igor June 15, 2026 at 05:02 PM

#18830

11.4.9 edit

igor June 15, 2026 at 04:58 PM

#18829

11.4.9 new solution

igor June 15, 2026 at 04:36 PM

#18828

6 minutes between problems

solved· 10.1.27

10.1.27 comment

emixter June 15, 2026 at 04:30 PM

thread

56 minutes between problems

solved· 13.3.5 in 3 minutes 18 seconds

13.3.5 edit

jzmicer June 15, 2026 at 03:33 PM

#18827

13.3.5 edit

jzmicer June 15, 2026 at 03:31 PM

#18826

13.3.5 edit

jzmicer June 15, 2026 at 03:30 PM

#18825

7 minutes between problems

solved· 12.2.1 in 6 minutes 41 seconds

12.2.1 edit

Alexphysics June 15, 2026 at 03:22 PM

#18824

12.2.1 edit

Alexphysics June 15, 2026 at 03:21 PM

#18823

12.2.1 new solution

Alexphysics June 15, 2026 at 03:15 PM

#18822

25 minutes between problems

solved· 14.2.13 in 12 minutes 19 seconds

14.2.13 edit

Alexphysics June 15, 2026 at 02:50 PM

#18821

14.2.13 edit

Alexphysics June 15, 2026 at 02:47 PM

#18820

14.2.13 edit

Alexphysics June 15, 2026 at 02:46 PM

#18819

14.2.13 edit

Alexphysics June 15, 2026 at 02:45 PM

#18818

14.2.13 new solution

Alexphysics June 15, 2026 at 02:38 PM

#18817

42 minutes between problems

solved· 13.3.5

13.3.5 edit

jzmicer June 15, 2026 at 01:55 PM

#18816

4 hours 49 minutes between problems

solved· 11.4.23

11.4.23 edit

astrosander June 15, 2026 at 09:06 AM

#18815

less than a minute between problems

solved· 11.4.24

11.4.24 edit

astrosander June 15, 2026 at 09:05 AM

#18814

1 hour 1 minute between problems

solved· 3.4.11

3.4.11 comment

igor June 15, 2026 at 08:04 AM

thread

3.4.11 edit

igor June 15, 2026 at 08:03 AM

#18813

2 minutes between problems

solved· 11.4.24

11.4.24 edit

igor June 15, 2026 at 08:01 AM

#18812

less than a minute between problems

solved· 11.4.23 in 2 minutes 50 seconds

11.4.23 edit

igor June 15, 2026 at 08:00 AM

#18811

11.4.23 edit

igor June 15, 2026 at 07:58 AM

#18810

8 minutes between problems

solved· 11.4.24

11.4.24 edit

igor June 15, 2026 at 07:49 AM

#18809

4 minutes between problems

solved· 11.4.23 in 20 minutes 19 seconds

11.4.23 edit

igor June 15, 2026 at 07:44 AM

#18808

11.4.23 new solution

igor June 15, 2026 at 07:24 AM

#18807

14 minutes between problems

solved· 11.4.24 in 3 minutes 43 seconds

11.4.24 edit

igor June 15, 2026 at 07:09 AM

#18806

11.4.24 edit

igor June 15, 2026 at 07:05 AM

#18805

39 minutes between problems

solved· 3.7.6 in 16 minutes 31 seconds

3.7.6 edit

Alexphysics June 15, 2026 at 06:26 AM

#18804

3.7.6 edit

Alexphysics June 15, 2026 at 06:25 AM

#18803

3.7.6 edit

Alexphysics June 15, 2026 at 06:24 AM

#18802

3.7.6 edit

Alexphysics June 15, 2026 at 06:09 AM

#18801

2 minutes between problems

solved· 11.4.24

11.4.24 new solution

igor June 15, 2026 at 06:07 AM

#18800

21 minutes between problems

solved· 14.1.6 in 51 minutes 16 seconds

14.1.6 edit

Sergey_Kuleshov June 15, 2026 at 05:46 AM

#18799

14.1.6 edit

Alexphysics June 15, 2026 at 05:09 AM

#18798

14.1.6 edit

Alexphysics June 15, 2026 at 05:08 AM

#18797

14.1.6 edit

Alexphysics June 15, 2026 at 05:06 AM

#18796

14.1.6 edit

Alexphysics June 15, 2026 at 05:06 AM

#18795

14.1.6 new solution

Alexphysics June 15, 2026 at 04:54 AM

#18794

39 minutes between problems

solved· 6.5.4 in 13 minutes 36 seconds

6.5.4 edit

Alexphysics June 15, 2026 at 04:15 AM

#18793

6.5.4 edit

Alexphysics June 15, 2026 at 04:14 AM

#18792

6.5.4 new solution

Alexphysics June 15, 2026 at 04:02 AM

#18791

31 minutes between problems

solved· 6.3.34 in 17 minutes 21 seconds

6.3.34 edit

Alexphysics June 15, 2026 at 03:30 AM

#18790

6.3.34 edit

Alexphysics June 15, 2026 at 03:29 AM

#18789

6.3.34 new solution

Alexphysics June 15, 2026 at 03:12 AM

#18788

2 hours 37 minutes between problems

solved· 6.3.17 in 52 minutes 11 seconds

6.3.17 edit

Alexphysics June 15, 2026 at 12:34 AM

#18787

6.3.17 edit

Alexphysics June 14, 2026 at 11:42 PM

#18786

2 hours 15 minutes between problems

solved· 14.3.21 in 1 minute 7 seconds

14.3.21 edit

JAMF June 14, 2026 at 09:27 PM

#18785

14.3.21 edit

JAMF June 14, 2026 at 09:27 PM

#18784

14.3.21 new solution

JAMF June 14, 2026 at 09:26 PM

#18783

6 minutes between problems

solved· 14.3.20 in 1 minute 21 seconds

14.3.20 edit

JAMF June 14, 2026 at 09:20 PM

#18782

14.3.20 edit

JAMF June 14, 2026 at 09:19 PM

#18781

14.3.20 edit

JAMF June 14, 2026 at 09:19 PM

#18780

14.3.20 new solution

JAMF June 14, 2026 at 09:19 PM

#18779

3 minutes between problems

solved· 10.1.27

10.1.27 comment

emixter June 14, 2026 at 09:15 PM

thread

1 hour 28 minutes between problems

solved· 14.3.19 in 1 minute 19 seconds

14.3.19 edit

JAMF June 14, 2026 at 07:47 PM

#18778

14.3.19 new solution

JAMF June 14, 2026 at 07:45 PM

#18777

1 hour 22 minutes between problems

solved· 4.1.3

4.1.3 comment

RI_a21 June 14, 2026 at 06:23 PM

thread

28 minutes between problems

solved· 14.4.22 in 1 minute 20 seconds

14.4.22 edit

JAMF June 14, 2026 at 05:54 PM

#18776

14.4.22 edit

JAMF June 14, 2026 at 05:54 PM

#18775

14.4.22 edit

JAMF June 14, 2026 at 05:53 PM

#18774

15 minutes between problems

solved· 14.4.23

14.4.23 edit

JAMF June 14, 2026 at 05:38 PM

#18773

1 hour 1 minute between problems

solved· 10.2.9 in 21 minutes 51 seconds

10.2.9 edit

ssstepa June 14, 2026 at 04:36 PM

#18772

10.2.9 new solution

ssstepa June 14, 2026 at 04:14 PM

#18771

50 minutes between problems

solved· 13.2.20 in 6 seconds

13.2.20 edit

Adler June 14, 2026 at 03:24 PM

#18770

13.2.20 edit

Adler June 14, 2026 at 03:24 PM

#18769

20 minutes between problems

solved· 14.3.16

14.3.16 edit

JAMF June 14, 2026 at 03:04 PM

#18768

1 minute between problems

solved· 14.3.15

14.3.15 edit

JAMF June 14, 2026 at 03:02 PM

#18767

21 minutes between problems

solved· 14.4.23

14.4.23 edit

JAMF June 14, 2026 at 02:41 PM

#18766

26 minutes between problems

solved· 5.9.26

5.9.26 new solution

huz0 June 14, 2026 at 02:14 PM

#18765

9 minutes between problems

solved· 13.2.20 in 7 minutes 31 seconds

13.2.20 edit

Adler June 14, 2026 at 02:04 PM

#18764

13.2.20 edit

Adler June 14, 2026 at 01:57 PM

#18763

6 minutes between problems

solved· 12.2.7

12.2.7 edit

jzmicer June 14, 2026 at 01:51 PM

#18762

less than a minute between problems

solved· 13.2.20 in 5 seconds

13.2.20 edit

Adler June 14, 2026 at 01:50 PM

#18761

13.2.20 edit

Adler June 14, 2026 at 01:50 PM

#18760

7 minutes between problems

solved· 12.2.7

12.2.7 edit

jzmicer June 14, 2026 at 01:43 PM

#18759

7 minutes between problems

solved· 10.2.8

10.2.8 comment

huz0 June 14, 2026 at 01:40 PM

thread

10.2.8 edit

ssstepa June 14, 2026 at 01:36 PM

#18758

8 minutes between problems

solved· 5.8.4

5.8.4 edit

huz0 June 14, 2026 at 01:27 PM

#18757

3 minutes between problems

solved· 10.2.8

10.2.8 comment

emixter June 14, 2026 at 01:23 PM

thread

10.2.8 comment

emixter June 14, 2026 at 01:12 PM

thread

30 minutes between problems

solved· 12.2.10

12.2.10 comment

jzmicer June 14, 2026 at 12:53 PM

thread

12.2.10 comment

jzmicer June 14, 2026 at 12:53 PM

thread

47 minutes between problems

solved· 10.2.8 in 46 minutes 24 seconds

10.2.8 edit

ssstepa June 14, 2026 at 12:06 PM

#18756

10.2.8 edit

ssstepa June 14, 2026 at 11:19 AM

#18755

13 minutes between problems

solved· 13.2.20 in 7 minutes 21 seconds

13.2.20 edit

Adler June 14, 2026 at 11:06 AM

#18754

13.2.20 edit

Adler June 14, 2026 at 10:59 AM

#18753

1 hour 10 minutes between problems

solved· 5.8.5 in 3 minutes 40 seconds

5.8.5 edit

huz0 June 14, 2026 at 09:48 AM

#18752

5.8.5 edit

huz0 June 14, 2026 at 09:46 AM

#18751

5.8.5 edit

huz0 June 14, 2026 at 09:46 AM

#18750

5.8.5 edit

huz0 June 14, 2026 at 09:45 AM

#18749

44 minutes between problems

solved· 12.2.10

12.2.10 comment

huz0 June 14, 2026 at 09:01 AM

thread

9 minutes between problems

solved· 5.8.4 in 52 minutes 45 seconds

5.8.4 edit

huz0 June 14, 2026 at 08:52 AM

#18748

5.8.4 edit

huz0 June 14, 2026 at 08:15 AM

#18747

5.8.4 edit

huz0 June 14, 2026 at 08:14 AM

#18746

5.8.4 edit

huz0 June 14, 2026 at 07:59 AM

#18745

4 hours 23 minutes between problems

solved· 14.4.22 in 2 minutes 11 seconds

14.4.22 edit

JAMF June 14, 2026 at 03:36 AM

#18744

14.4.22 new solution

JAMF June 14, 2026 at 03:34 AM

#18743

2 hours 6 minutes between problems

solved· 14.4.23 in 55 seconds

14.4.23 edit

JAMF June 14, 2026 at 01:27 AM

#18742

14.4.23 new solution

JAMF June 14, 2026 at 01:26 AM

#18741

1 hour between problems

solved· 14.4.8 in 1 minute 11 seconds

14.4.8 edit

JAMF June 14, 2026 at 12:25 AM

#18740

14.4.8 new solution

JAMF June 14, 2026 at 12:24 AM

#18739

2 hours 46 minutes between problems

solved· 5.6.12

5.6.12 edit

JMMA2006 June 13, 2026 at 09:38 PM

#18738

12 minutes between problems

solved· 14.3.18 in 1 minute 20 seconds

14.3.18 edit

JAMF June 13, 2026 at 09:25 PM

#18737

14.3.18 new solution

JAMF June 13, 2026 at 09:24 PM

#18736

29 minutes between problems

solved· 12.2.7

12.2.7 edit

jzmicer June 13, 2026 at 08:55 PM

#18735

19 minutes between problems

solved· 14.3.17 in 1 minute 17 seconds

14.3.17 edit

JAMF June 13, 2026 at 08:36 PM

#18734

14.3.17 new solution

JAMF June 13, 2026 at 08:35 PM

#18733

32 minutes between problems

solved· 14.3.16 in 1 minute 34 seconds

14.3.16 edit

JAMF June 13, 2026 at 08:02 PM

#18732

14.3.16 new solution

JAMF June 13, 2026 at 08:00 PM

#18731

36 minutes between problems

solved· 12.2.10

12.2.10 edit

jzmicer June 13, 2026 at 07:24 PM

#18730

13 minutes between problems

solved· 14.3.15 in 2 minutes 41 seconds

14.3.15 edit

JAMF June 13, 2026 at 07:10 PM

#18729

14.3.15 new solution

JAMF June 13, 2026 at 07:08 PM

#18728

10 minutes between problems

solved· 12.2.7

12.2.7 new solution

jzmicer June 13, 2026 at 06:57 PM

#18727

33 minutes between problems

solved· 14.3.7 in 4 minutes 12 seconds

14.3.7 edit

JAMF June 13, 2026 at 06:24 PM

#18726

14.3.7 edit

JAMF June 13, 2026 at 06:22 PM

#18725

14.3.7 edit

JAMF June 13, 2026 at 06:21 PM

#18724

14.3.7 edit

JAMF June 13, 2026 at 06:20 PM

#18723

14.3.7 new solution

JAMF June 13, 2026 at 06:20 PM

#18722

59 minutes between problems

solved· 14.3.10 in 2 minutes 24 seconds

14.3.10 edit

JAMF June 13, 2026 at 05:20 PM

#18721

14.3.10 edit

JAMF June 13, 2026 at 05:18 PM

#18720

14.3.10 new solution

JAMF June 13, 2026 at 05:18 PM

#18719

11 minutes between problems

solved· 5.6.12 in 43 minutes 12 seconds

5.6.12 edit

JMMA2006 June 13, 2026 at 05:06 PM

#18718

5.6.12 edit

JMMA2006 June 13, 2026 at 04:23 PM

#18717

47 minutes between problems

solved· 14.2.6 in 6 minutes 16 seconds

14.2.6 edit

JAMF June 13, 2026 at 03:36 PM

#18716

14.2.6 edit

JAMF June 13, 2026 at 03:30 PM

#18715

26 minutes between problems

solved· 10.1.3 in 1 minute 16 seconds

10.1.3 edit

JMMA2006 June 13, 2026 at 03:03 PM

#18714

10.1.3 edit

JMMA2006 June 13, 2026 at 03:02 PM

#18713

less than a minute between problems

solved· 12.2.10

12.2.10 comment

jzmicer June 13, 2026 at 03:01 PM

thread

12.2.10 comment

jzmicer June 13, 2026 at 03:01 PM

thread

1 hour 43 minutes between problems

solved· 14.2.17 in 17 minutes 51 seconds

14.2.17 edit

Sergey_Kuleshov June 13, 2026 at 01:17 PM

#18712

14.2.17 edit

Sergey_Kuleshov June 13, 2026 at 01:15 PM

#18711

14.2.17 edit

Sergey_Kuleshov June 13, 2026 at 01:07 PM

#18710

14.2.17 edit

Sergey_Kuleshov June 13, 2026 at 01:05 PM

#18709

14.2.17 new solution

Sergey_Kuleshov June 13, 2026 at 01:00 PM

#18708

58 minutes between problems

solved· 5.8.15

5.8.15 comment

huz0 June 13, 2026 at 12:01 PM

thread

6 minutes between problems

solved· 5.8.14

5.8.14 edit

huz0 June 13, 2026 at 11:55 AM

#18707

4 hours 33 minutes between problems

solved· 5.7.9 in 11 hours 12 minutes

5.7.9 edit

naz June 13, 2026 at 07:21 AM

#18706

5.7.9 edit

naz June 13, 2026 at 06:54 AM

#18705

5.7.9 edit

naz June 12, 2026 at 08:25 PM

#18704

5.7.9 edit

naz June 12, 2026 at 08:18 PM

#18703

5.7.9 new solution

naz June 12, 2026 at 08:09 PM

#18702

1 hour 17 minutes between problems

solved· 12.2.10

12.2.10 comment

astrosander June 12, 2026 at 06:51 PM

thread

1 minute between problems

solved· 9.3.24

9.3.24 edit

astrosander June 12, 2026 at 06:50 PM

#18701

1 minute between problems

solved· 3.4.11

3.4.11 comment

astrosander June 12, 2026 at 06:48 PM

thread

1 minute between problems

solved· 14.1.7 in 2 seconds

14.1.7 edit

astrosander June 12, 2026 at 06:46 PM

#18700

14.1.7 edit

astrosander June 12, 2026 at 06:46 PM

#18699

less than a minute between problems

solved· 5.8.14

5.8.14 edit

astrosander June 12, 2026 at 06:45 PM

#18698

27 minutes between problems

solved· 13.3.7 in 1 minute 12 seconds

13.3.7 edit

Luisito June 12, 2026 at 06:17 PM

#18697

13.3.7 new solution

Luisito June 12, 2026 at 06:16 PM

#18696

1 hour 29 minutes between problems

solved· 13.1.17 in 1 minute 19 seconds

13.1.17 edit

Luisito June 12, 2026 at 04:46 PM

#18695

13.1.17 new solution

Luisito June 12, 2026 at 04:45 PM

#18694

1 hour 57 minutes between problems

solved· 5.8.16 in 33 minutes 41 seconds

5.8.16 edit

emixter June 12, 2026 at 02:47 PM

#18693

5.8.16 new solution

emixter June 12, 2026 at 02:14 PM

#18692

50 minutes between problems

solved· 12.2.10

12.2.10 comment

huz0 June 12, 2026 at 01:23 PM

thread

5 minutes between problems

solved· 5.8.14 in 9 minutes 40 seconds

5.8.14 edit

huz0 June 12, 2026 at 01:17 PM

#18690

5.8.14 edit

huz0 June 12, 2026 at 01:08 PM

#18688

5.8.14 new solution

huz0 June 12, 2026 at 01:08 PM

#18687

11 minutes between problems

solved· 12.2.10 in 6 minutes 21 seconds

12.2.10 comment

igor June 12, 2026 at 01:07 PM

thread

12.2.10 edit

jzmicer June 12, 2026 at 12:56 PM

#18685

12.2.10 edit

jzmicer June 12, 2026 at 12:51 PM

#18684

12.2.10 edit

jzmicer June 12, 2026 at 12:50 PM

#18683

18 minutes between problems

solved· 3.4.11

3.4.11 comment

igor June 12, 2026 at 12:31 PM

thread

13 minutes between problems

solved· 12.2.10

12.2.10 edit

jzmicer June 12, 2026 at 12:17 PM

#18682

1 hour 20 minutes between problems

solved· 3.4.11 in 6 minutes 12 seconds

3.4.11 comment

emixter June 12, 2026 at 12:06 PM

thread

3.4.11 comment

igor June 12, 2026 at 10:58 AM

thread

3.4.11 edit

igor June 12, 2026 at 10:57 AM

#18681

3.4.11 edit

igor June 12, 2026 at 10:51 AM

#18680

25 minutes between problems

solved· 9.3.24 in 25 seconds

9.3.24 edit

naz June 12, 2026 at 10:25 AM

#18679

9.3.24 edit

naz June 12, 2026 at 10:25 AM

#18678

17 minutes between problems

solved· 3.4.11 in 2 hours 10 minutes

3.4.11 edit

igor June 12, 2026 at 10:07 AM

#18677

3.4.11 edit

igor June 12, 2026 at 09:30 AM

#18676

3.4.11 edit

igor June 12, 2026 at 09:14 AM

#18675

3.4.11 edit

igor June 12, 2026 at 08:42 AM

#18674

3.4.11 new solution

igor June 12, 2026 at 07:56 AM

#18673

40 minutes between problems

solved· 5.8.15

5.8.15 edit

emixter June 12, 2026 at 07:15 AM

#18672

20 minutes between problems

solved· 14.1.7

14.1.7 edit

astrosander June 12, 2026 at 06:55 AM

#18671

1 hour 24 minutes between problems

solved· 5.8.15

5.8.15 new solution

emixter June 12, 2026 at 05:30 AM

#18670

24 minutes between problems

solved· 14.1.7 in 5 minutes 35 seconds

14.1.7 edit

JAMF June 12, 2026 at 05:05 AM

#18669

14.1.7 new solution

JAMF June 12, 2026 at 05:00 AM

#18668

6 hours 9 minutes between problems

solved· 12.2.10

12.2.10 edit

jzmicer June 11, 2026 at 10:50 PM

#18667

37 minutes between problems

solved· 13.1.15

13.1.15 edit

Luisito June 11, 2026 at 10:13 PM

#18666

7 minutes between problems

solved· 12.2.10

12.2.10 new solution

jzmicer June 11, 2026 at 10:05 PM

#18665

18 minutes between problems

solved· 13.1.15 in 24 seconds

13.1.15 edit

Luisito June 11, 2026 at 09:46 PM

#18664

13.1.15 edit

Luisito June 11, 2026 at 09:46 PM

#18663

13.1.15 new solution

Luisito June 11, 2026 at 09:46 PM

#18662

1 hour 7 minutes between problems

solved· 12.2.4 in 1 minute 51 seconds

12.2.4 edit

jzmicer June 11, 2026 at 08:38 PM

#18657

12.2.4 edit

jzmicer June 11, 2026 at 08:37 PM

#18656

12.2.4 edit

jzmicer June 11, 2026 at 08:37 PM

#18655

49 minutes between problems

solved· 13.3.9 in 2 minutes 22 seconds

13.3.9 edit

Luisito June 11, 2026 at 07:47 PM

#18654

13.3.9 edit

Luisito June 11, 2026 at 07:47 PM

#18653

13.3.9 new solution

Luisito June 11, 2026 at 07:45 PM

#18652

27 minutes between problems

solved· 9.2.19 in 3 minutes 39 seconds

9.2.19 edit

naz June 11, 2026 at 07:18 PM

#18651

9.2.19 edit

naz June 11, 2026 at 07:14 PM

#18650

1 minute between problems

solved· 9.2.18 in 37 seconds

9.2.18 edit

naz June 11, 2026 at 07:13 PM

#18649

9.2.18 edit

naz June 11, 2026 at 07:13 PM

#18648

2 minutes between problems

solved· 9.2.23 in 7 minutes 27 seconds

9.2.23 edit

naz June 11, 2026 at 07:10 PM

#18647

9.2.23 edit

naz June 11, 2026 at 07:10 PM

#18646

9.2.23 edit

naz June 11, 2026 at 07:08 PM

#18645

9.2.23 edit

naz June 11, 2026 at 07:04 PM

#18644

9.2.23 new solution

naz June 11, 2026 at 07:03 PM

#18643

16 minutes between problems

solved· 9.2.21 in 2 minutes 5 seconds

9.2.21 edit

naz June 11, 2026 at 06:46 PM

#18642

9.2.21 edit

naz June 11, 2026 at 06:46 PM

#18641

9.2.21 new solution

naz June 11, 2026 at 06:44 PM

#18640

4 minutes between problems

solved· 13.3.4 in 1 minute 13 seconds

13.3.4 edit

Luisito June 11, 2026 at 06:40 PM

#18639

13.3.4 new solution

Luisito June 11, 2026 at 06:39 PM

#18638

10 minutes between problems

solved· 9.2.19

9.2.19 edit

naz June 11, 2026 at 06:29 PM

#18637

1 minute between problems

solved· 9.4.5

9.4.5 comment

huz0 June 11, 2026 at 06:28 PM

thread

less than a minute between problems

solved· 9.2.18

9.2.18 comment

huz0 June 11, 2026 at 06:27 PM

thread

2 minutes between problems

solved· 12.2.4

12.2.4 new solution

jzmicer June 11, 2026 at 06:24 PM

#18636

7 minutes between problems

solved· 9.4.10

9.4.10 edit

naz June 11, 2026 at 06:17 PM

#18635

16 minutes between problems

solved· 9.2.19

9.2.19 new solution

naz June 11, 2026 at 06:00 PM

#18634

16 minutes between problems

solved· 9.2.18 in 3 minutes 26 seconds

9.2.18 edit

naz June 11, 2026 at 05:44 PM

#18633

9.2.18 new solution

naz June 11, 2026 at 05:40 PM

#18632

6 minutes between problems

solved· 9.4.10 in 1 minute 25 seconds

9.4.10 edit

naz June 11, 2026 at 05:33 PM

#18631

9.4.10 edit

naz June 11, 2026 at 05:32 PM

#18630

less than a minute between problems

solved· 9.4.5

9.4.5 edit

naz June 11, 2026 at 05:31 PM

#18629

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