All Contributions

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

Contribute

19809 contributions

1933 problems

98 contributors

solved· 13.2.8 in 1 minute 13 seconds

13.2.8 edit

naz July 2, 2026 at 08:31 PM

#19546

13.2.8 edit

naz July 2, 2026 at 08:31 PM

#19545

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19544

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19543

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19542

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19541

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19540

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19539

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19538

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19537

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19536

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19535

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19534

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19533

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19532

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19531

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19530

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19529

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19528

13.2.8 edit

naz July 2, 2026 at 08:30 PM

#19527

13.2.8 edit

naz July 2, 2026 at 08:29 PM

#19525

13.2.8 edit

naz July 2, 2026 at 08:29 PM

#19526

13.2.8 edit

naz July 2, 2026 at 08:29 PM

#19524

13.2.8 edit

naz July 2, 2026 at 08:29 PM

#19523

13.2.8 edit

naz July 2, 2026 at 08:29 PM

#19522

13.2.8 edit

naz July 2, 2026 at 08:29 PM

#19521

1 hour 55 minutes between problems

solved· 1.4.9

1.4.9 edit

AnnaN July 2, 2026 at 06:34 PM

#19520

19 minutes between problems

solved· 2.1.44

2.1.44 comment

Adler July 2, 2026 at 06:15 PM

thread

1 minute between problems

solved· 14.3.14 in 1 minute 33 seconds

14.3.14 edit

Alexphysics July 2, 2026 at 06:14 PM

#19519

14.3.14 new solution

Alexphysics July 2, 2026 at 06:12 PM

#19518

15 minutes between problems

solved· 2.6.9 in 16 minutes 40 seconds

2.6.9 edit

JMMA2006 July 2, 2026 at 05:56 PM

#19517

2.6.9 edit

JMMA2006 July 2, 2026 at 05:39 PM

#19516

17 minutes between problems

solved· 13.1.9

13.1.9 comment

Adler July 2, 2026 at 05:22 PM

thread

2 hours 36 minutes between problems

solved· 13.2.3 in 2 minutes 50 seconds

13.2.3 edit

naz July 2, 2026 at 02:46 PM

#19515

13.2.3 edit

naz July 2, 2026 at 02:45 PM

#19514

13.2.3 edit

naz July 2, 2026 at 02:44 PM

#19513

13.2.3 new solution

naz July 2, 2026 at 02:43 PM

#19512

30 minutes between problems

solved· 13.2.2 in 8 minutes 19 seconds

13.2.2 edit

naz July 2, 2026 at 02:12 PM

#19511

13.2.2 edit

naz July 2, 2026 at 02:10 PM

#19510

13.2.2 edit

naz July 2, 2026 at 02:08 PM

#19509

13.2.2 new solution

naz July 2, 2026 at 02:04 PM

#19508

4 hours 14 minutes between problems

solved· 1.4.9 in 3 minutes 5 seconds

1.4.9 edit

AnnaN July 2, 2026 at 09:50 AM

#19507

1.4.9 edit

AnnaN July 2, 2026 at 09:47 AM

#19506

2 minutes between problems

solved· 13.1.9

13.1.9 comment

astrosander July 2, 2026 at 09:44 AM

thread

2 minutes between problems

solved· 1.4.9

1.4.9 edit

AnnaN July 2, 2026 at 09:41 AM

#19505

less than a minute between problems

solved· 7.1.17

7.1.17 edit

astrosander July 2, 2026 at 09:40 AM

#19504

1 minute between problems

solved· 1.4.9

1.4.9 edit

AnnaN July 2, 2026 at 09:39 AM

#19503

9 hours 58 minutes between problems

solved· 7.4.10

7.4.10 comment

Макоша Рыбкин July 1, 2026 at 11:40 PM

thread

3 hours 8 minutes between problems

solved· 2.1.41

2.1.41 comment

Adler July 1, 2026 at 08:32 PM

thread

7 minutes between problems

solved· 11.5.27 in 1 minute 59 seconds

11.5.27 edit

naz July 1, 2026 at 08:25 PM

#19498

11.5.27 edit

naz July 1, 2026 at 08:23 PM

#19497

2 minutes between problems

solved· 2.1.38

2.1.38 edit

Adler July 1, 2026 at 08:20 PM

#19496

less than a minute between problems

solved· 11.5.27 in 4 minutes 49 seconds

11.5.27 edit

naz July 1, 2026 at 08:20 PM

#19495

11.5.27 new solution

naz July 1, 2026 at 08:15 PM

#19494

1 hour 5 minutes between problems

solved· 14.3.13 in 2 minutes 2 seconds

14.3.13 edit

Alexphysics July 1, 2026 at 07:09 PM

#19489

14.3.13 new solution

Alexphysics July 1, 2026 at 07:07 PM

#19488

1 hour 26 minutes between problems

solved· 14.4.4

14.4.4 comment

Ermuh_Oral July 1, 2026 at 05:41 PM

thread

1 hour 59 minutes between problems

solved· 9.2.15

9.2.15 comment

Макоша Рыбкин July 1, 2026 at 03:42 PM

thread

2 hours 38 minutes between problems

solved· 11.5.21 in 1 minute 49 seconds

11.5.21 edit

naz July 1, 2026 at 01:03 PM

#19472

11.5.21 edit

naz July 1, 2026 at 01:01 PM

#19471

2 minutes between problems

solved· 11.5.20 in 4 minutes 17 seconds

11.5.20 edit

naz July 1, 2026 at 12:58 PM

#19470

11.5.20 edit

naz July 1, 2026 at 12:58 PM

#19469

11.5.20 edit

naz July 1, 2026 at 12:54 PM

#19468

3 hours 28 minutes between problems

solved· 11.5.25 in 11 minutes 48 seconds

11.5.25 edit

naz July 1, 2026 at 09:26 AM

#19467

11.5.25 edit

naz July 1, 2026 at 09:25 AM

#19466

11.5.25 edit

naz July 1, 2026 at 09:24 AM

#19465

11.5.25 edit

naz July 1, 2026 at 09:24 AM

#19464

11.5.25 edit

naz July 1, 2026 at 09:21 AM

#19463

11.5.25 edit

naz July 1, 2026 at 09:20 AM

#19462

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19461

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19460

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19459

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19458

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19457

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19456

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19455

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19454

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19453

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19452

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19451

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19450

11.5.25 edit

naz July 1, 2026 at 09:14 AM

#19449

11.5.25 new solution

naz July 1, 2026 at 09:14 AM

#19448

6 hours 25 minutes between problems

solved· 3.3.35

3.3.35 edit

igor July 1, 2026 at 02:49 AM

#19447

34 minutes between problems

solved· 14.3.12 in 1 minute 25 seconds

14.3.12 edit

Alexphysics July 1, 2026 at 02:14 AM

#19446

14.3.12 new solution

Alexphysics July 1, 2026 at 02:13 AM

#19445

57 minutes between problems

solved· 8.3.32

8.3.32 comment

astrosander July 1, 2026 at 01:15 AM

thread

11 hours 4 minutes between problems

solved· 1.3.18 in 6 minutes 42 seconds

1.3.18 edit

AnnaN June 30, 2026 at 02:11 PM

#19444

1.3.18 edit

AnnaN June 30, 2026 at 02:08 PM

#19443

1.3.18 edit

AnnaN June 30, 2026 at 02:04 PM

#19442

9 hours 45 minutes between problems

solved· 6.1.1 in 7 minutes 7 seconds

6.1.1 edit

thegaychemistrynerd June 30, 2026 at 04:18 AM

#19441

6.1.1 edit

thegaychemistrynerd June 30, 2026 at 04:16 AM

#19440

6.1.1 edit

thegaychemistrynerd June 30, 2026 at 04:16 AM

#19439

6.1.1 edit

thegaychemistrynerd June 30, 2026 at 04:15 AM

#19438

6.1.1 edit

thegaychemistrynerd June 30, 2026 at 04:14 AM

#19437

6.1.1 edit

thegaychemistrynerd June 30, 2026 at 04:11 AM

#19436

6.1.1 edit

thegaychemistrynerd June 30, 2026 at 04:11 AM

#19435

2 hours 7 minutes between problems

solved· 8.3.32 in 3 minutes 27 seconds

8.3.32 edit

thegaychemistrynerd June 30, 2026 at 02:04 AM

#19434

8.3.32 edit

thegaychemistrynerd June 30, 2026 at 02:02 AM

#19433

8.3.32 edit

thegaychemistrynerd June 30, 2026 at 02:02 AM

#19432

8.3.32 edit

thegaychemistrynerd June 30, 2026 at 02:00 AM

#19431

6 hours 53 minutes between problems

solved· 11.5.20

11.5.20 comment

igor June 29, 2026 at 07:07 PM

thread

19 minutes between problems

solved· 11.5.21 in 6 minutes 11 seconds

11.5.21 edit

naz June 29, 2026 at 06:47 PM

#19430

11.5.21 edit

naz June 29, 2026 at 06:47 PM

#19429

11.5.21 edit

naz June 29, 2026 at 06:46 PM

#19428

11.5.21 edit

naz June 29, 2026 at 06:46 PM

#19427

11.5.21 new solution

naz June 29, 2026 at 06:41 PM

#19426

13 minutes between problems

solved· 11.5.20 in 5 minutes 55 seconds

11.5.20 edit

naz June 29, 2026 at 06:28 PM

#19425

11.5.20 edit

naz June 29, 2026 at 06:26 PM

#19424

11.5.20 edit

naz June 29, 2026 at 06:25 PM

#19423

11.5.20 new solution

naz June 29, 2026 at 06:22 PM

#19422

3 hours 17 minutes between problems

solved· 2.6.36

2.6.36 comment

Ermuh_Oral June 29, 2026 at 03:04 PM

thread

2 hours 10 minutes between problems

solved· 12.1.5 in 20 minutes 30 seconds

12.1.5 edit

Sergey_Kuleshov June 29, 2026 at 12:54 PM

#19421

12.1.5 edit

Sergey_Kuleshov June 29, 2026 at 12:54 PM

#19420

12.1.5 edit

Sergey_Kuleshov June 29, 2026 at 12:53 PM

#19419

12.1.5 edit

Sergey_Kuleshov June 29, 2026 at 12:50 PM

#19418

12.1.5 edit

Sergey_Kuleshov June 29, 2026 at 12:48 PM

#19417

12.1.5 new solution

Sergey_Kuleshov June 29, 2026 at 12:34 PM

#19416

2 hours 50 minutes between problems

solved· 11.6.1 in 8 minutes 11 seconds

11.6.1 edit

naz June 29, 2026 at 09:43 AM

#19415

11.6.1 edit

naz June 29, 2026 at 09:42 AM

#19414

11.6.1 edit

naz June 29, 2026 at 09:42 AM

#19413

11.6.1 new solution

naz June 29, 2026 at 09:35 AM

#19412

1 hour 18 minutes between problems

solved· 11.5.24 in 6 minutes 17 seconds

11.5.24 edit

naz June 29, 2026 at 08:17 AM

#19411

11.5.24 edit

naz June 29, 2026 at 08:17 AM

#19410

11.5.24 edit

naz June 29, 2026 at 08:16 AM

#19409

11.5.24 edit

naz June 29, 2026 at 08:16 AM

#19408

11.5.24 new solution

naz June 29, 2026 at 08:11 AM

#19407

1 hour 1 minute between problems

solved· 6.4.8

6.4.8 edit

igor June 29, 2026 at 07:09 AM

#19406

2 minutes between problems

solved· 3.4.13 in 42 minutes 30 seconds

3.4.13 edit

igor June 29, 2026 at 07:06 AM

#19405

3.4.13 edit

igor June 29, 2026 at 07:01 AM

#19404

3.4.13 new solution

igor June 29, 2026 at 06:24 AM

#19403

12 minutes between problems

solved· 6.4.8 in 4 minutes 9 seconds

6.4.8 edit

igor June 29, 2026 at 06:12 AM

#19402

6.4.8 edit

igor June 29, 2026 at 06:07 AM

#19401

19 minutes between problems

solved· 12.1.32 in 28 seconds

12.1.32 edit

Alexphysics June 29, 2026 at 05:48 AM

#19400

12.1.32 new solution

Alexphysics June 29, 2026 at 05:48 AM

#19399

2 minutes between problems

solved· 12.1.31 in 31 seconds

12.1.31 edit

Alexphysics June 29, 2026 at 05:45 AM

#19398

12.1.31 edit

Alexphysics June 29, 2026 at 05:44 AM

#19397

12.1.31 new solution

Alexphysics June 29, 2026 at 05:44 AM

#19396

3 minutes between problems

solved· 12.1.27 in 52 seconds

12.1.27 edit

Alexphysics June 29, 2026 at 05:41 AM

#19395

12.1.27 new solution

Alexphysics June 29, 2026 at 05:40 AM

#19394

4 minutes between problems

solved· 12.1.26 in 56 seconds

12.1.26 edit

Alexphysics June 29, 2026 at 05:36 AM

#19393

12.1.26 edit

Alexphysics June 29, 2026 at 05:35 AM

#19392

12.1.26 new solution

Alexphysics June 29, 2026 at 05:35 AM

#19391

6 minutes between problems

solved· 12.1.25 in 1 minute 12 seconds

12.1.25 edit

Alexphysics June 29, 2026 at 05:29 AM

#19390

12.1.25 new solution

Alexphysics June 29, 2026 at 05:27 AM

#19389

less than a minute between problems

solved· 7.4.10 in 5 minutes 31 seconds

7.4.10 edit

igor June 29, 2026 at 05:27 AM

#19388

7.4.10 edit

igor June 29, 2026 at 05:22 AM

#19387

1 minute between problems

solved· 12.1.23 in 2 minutes 22 seconds

12.1.23 edit

Alexphysics June 29, 2026 at 05:20 AM

#19386

12.1.23 new solution

Alexphysics June 29, 2026 at 05:17 AM

#19385

7 minutes between problems

solved· 12.1.20 in 3 minutes 5 seconds

12.1.20 edit

Alexphysics June 29, 2026 at 05:10 AM

#19384

12.1.20 edit

Alexphysics June 29, 2026 at 05:10 AM

#19383

12.1.20 new solution

Alexphysics June 29, 2026 at 05:07 AM

#19382

1 hour 3 minutes between problems

solved· 7.4.10

7.4.10 comment

igor June 29, 2026 at 04:03 AM

thread

6 hours 50 minutes between problems

solved· 11.5.23 in 5 minutes 2 seconds

11.5.23 edit

naz June 28, 2026 at 09:13 PM

#19381

11.5.23 edit

naz June 28, 2026 at 09:12 PM

#19380

11.5.23 edit

naz June 28, 2026 at 09:12 PM

#19379

11.5.23 edit

naz June 28, 2026 at 09:12 PM

#19378

11.5.23 edit

naz June 28, 2026 at 09:11 PM

#19377

11.5.23 edit

naz June 28, 2026 at 09:11 PM

#19376

11.5.23 new solution

naz June 28, 2026 at 09:08 PM

#19375

46 minutes between problems

solved· 11.5.10 in 7 minutes 32 seconds

11.5.10 edit

naz June 28, 2026 at 08:21 PM

#19374

11.5.10 edit

naz June 28, 2026 at 08:20 PM

#19373

11.5.10 edit

naz June 28, 2026 at 08:19 PM

#19372

11.5.10 new solution

naz June 28, 2026 at 08:14 PM

#19371

33 minutes between problems

solved· 10.1.12 in 8 minutes 37 seconds

10.1.12 edit

jzmicer June 28, 2026 at 07:40 PM

#19370

10.1.12 edit

jzmicer June 28, 2026 at 07:34 PM

#19369

10.1.12 edit

jzmicer June 28, 2026 at 07:31 PM

#19368

less than a minute between problems

solved· 11.4.12

11.4.12 edit

naz June 28, 2026 at 07:31 PM

#19367

3 minutes between problems

solved· 10.1.12

10.1.12 edit

jzmicer June 28, 2026 at 07:27 PM

#19366

2 minutes between problems

solved· 11.4.12

11.4.12 edit

naz June 28, 2026 at 07:25 PM

#19365

7 minutes between problems

solved· 10.2.12

10.2.12 edit

jzmicer June 28, 2026 at 07:18 PM

#19364

3 minutes between problems

solved· 11.6.9 in 4 minutes 41 seconds

11.6.9 edit

jzmicer June 28, 2026 at 07:14 PM

#19363

11.6.9 edit

jzmicer June 28, 2026 at 07:13 PM

#19362

11.6.9 edit

jzmicer June 28, 2026 at 07:10 PM

#19361

11.6.9 edit

jzmicer June 28, 2026 at 07:10 PM

#19360

11.6.9 edit

jzmicer June 28, 2026 at 07:09 PM

#19359

6 minutes between problems

solved· 11.6.8

11.6.8 edit

jzmicer June 28, 2026 at 07:03 PM

#19358

1 minute between problems

solved· 11.6.7 in 1 minute 8 seconds

11.6.7 edit

jzmicer June 28, 2026 at 07:01 PM

#19357

11.6.7 edit

jzmicer June 28, 2026 at 07:01 PM

#19356

11.6.7 edit

jzmicer June 28, 2026 at 07:00 PM

#19355

2 minutes between problems

solved· 11.6.6

11.6.6 edit

jzmicer June 28, 2026 at 06:58 PM

#19354

3 minutes between problems

solved· 11.6.3 in 1 minute 34 seconds

11.6.3 edit

jzmicer June 28, 2026 at 06:55 PM

#19353

11.6.3 edit

jzmicer June 28, 2026 at 06:53 PM

#19352

1 minute between problems

solved· 11.6.2 in 57 seconds

11.6.2 edit

jzmicer June 28, 2026 at 06:52 PM

#19351

11.6.2 edit

jzmicer June 28, 2026 at 06:51 PM

#19350

21 minutes between problems

solved· 6.6.26 in 3 minutes 15 seconds

6.6.26 edit

jzmicer June 28, 2026 at 06:29 PM

#19349

6.6.26 edit

jzmicer June 28, 2026 at 06:29 PM

#19348

6.6.26 edit

jzmicer June 28, 2026 at 06:29 PM

#19347

6.6.26 new solution

jzmicer June 28, 2026 at 06:26 PM

#19346

58 minutes between problems

solved· 6.6.28

6.6.28 comment

emixter June 28, 2026 at 05:28 PM

thread

9 minutes between problems

solved· 12.1.19 in 2 minutes 33 seconds

12.1.19 edit

Alexphysics June 28, 2026 at 05:19 PM

#19345

12.1.19 new solution

Alexphysics June 28, 2026 at 05:16 PM

#19344

5 minutes between problems

solved· 7.4.10

7.4.10 comment

igor June 28, 2026 at 05:10 PM

thread

1 minute between problems

solved· 12.1.18

12.1.18 edit

Alexphysics June 28, 2026 at 05:09 PM

#19343

less than a minute between problems

solved· 6.6.28

6.6.28 edit

jzmicer June 28, 2026 at 05:09 PM

#19342

less than a minute between problems

solved· 12.1.18

12.1.18 new solution

Alexphysics June 28, 2026 at 05:08 PM

#19341

less than a minute between problems

solved· 6.6.28

6.6.28 edit

jzmicer June 28, 2026 at 05:08 PM

#19340

6.6.28 comment

jzmicer June 28, 2026 at 05:06 PM

thread

6 minutes between problems

solved· 7.4.10

7.4.10 comment

emixter June 28, 2026 at 05:02 PM

thread

7 minutes between problems

solved· 12.1.17 in 58 seconds

12.1.17 edit

Alexphysics June 28, 2026 at 04:55 PM

#19339

12.1.17 new solution

Alexphysics June 28, 2026 at 04:54 PM

#19338

2 minutes between problems

solved· 7.4.10

7.4.10 comment

igor June 28, 2026 at 04:51 PM

thread

7.4.10 comment

igor June 28, 2026 at 04:51 PM

thread

7.4.10 comment

emixter June 28, 2026 at 04:48 PM

thread

7 minutes between problems

solved· 13.1.12 in 32 seconds

13.1.12 edit

Alexphysics June 28, 2026 at 04:44 PM

#19337

13.1.12 new solution

Alexphysics June 28, 2026 at 04:44 PM

#19336

1 hour 4 minutes between problems

solved· 7.4.10

7.4.10 comment

igor June 28, 2026 at 03:39 PM

thread

27 minutes between problems

solved· 5.6.29 in 4 minutes 5 seconds

5.6.29 edit

JMMA2006 June 28, 2026 at 03:12 PM

#19335

5.6.29 edit

JMMA2006 June 28, 2026 at 03:08 PM

#19334

1 hour 54 minutes between problems

solved· 6.6.28

6.6.28 comment

emixter June 28, 2026 at 01:13 PM

thread

1 minute between problems

solved· 14.5.4 in 1 minute 22 seconds

14.5.4 edit

jzmicer June 28, 2026 at 01:12 PM

#19333

14.5.4 edit

jzmicer June 28, 2026 at 01:10 PM

#19332

3 minutes between problems

solved· 14.5.5 in 58 seconds

14.5.5 edit

jzmicer June 28, 2026 at 01:06 PM

#19331

14.5.5 edit

jzmicer June 28, 2026 at 01:05 PM

#19330

less than a minute between problems

solved· 6.6.28

6.6.28 comment

jzmicer June 28, 2026 at 01:04 PM

thread

less than a minute between problems

solved· 14.5.5

14.5.5 edit

jzmicer June 28, 2026 at 01:04 PM

#19329

1 minute between problems

solved· 6.6.28

6.6.28 comment

emixter June 28, 2026 at 01:02 PM

thread

3 minutes between problems

solved· 14.5.9 in 3 minutes 55 seconds

14.5.9 edit

jzmicer June 28, 2026 at 12:59 PM

#19328

14.5.9 edit

jzmicer June 28, 2026 at 12:55 PM

#19327

2 minutes between problems

solved· 14.5.11 in 1 minute 30 seconds

14.5.11 edit

jzmicer June 28, 2026 at 12:52 PM

#19326

14.5.11 edit

jzmicer June 28, 2026 at 12:51 PM

#19325

4 minutes between problems

solved· 14.5.12 in 1 minute 34 seconds

14.5.12 edit

jzmicer June 28, 2026 at 12:46 PM

#19324

14.5.12 edit

jzmicer June 28, 2026 at 12:45 PM

#19323

2 minutes between problems

solved· 14.5.18 in 1 minute 9 seconds

14.5.18 edit

jzmicer June 28, 2026 at 12:42 PM

#19322

14.5.18 edit

jzmicer June 28, 2026 at 12:41 PM

#19321

7 minutes between problems

solved· 6.6.28 in 1 minute 54 seconds

6.6.28 edit

jzmicer June 28, 2026 at 12:34 PM

#19320

6.6.28 edit

jzmicer June 28, 2026 at 12:34 PM

#19319

6.6.28 edit

jzmicer June 28, 2026 at 12:33 PM

#19318

6.6.28 new solution

jzmicer June 28, 2026 at 12:32 PM

#19317

3 hours 33 minutes between problems

solved· 11.4.12 in 5 minutes 38 seconds

11.4.12 edit

naz June 28, 2026 at 08:59 AM

#19316

11.4.12 new solution

naz June 28, 2026 at 08:53 AM

#19315

3 hours 24 minutes between problems

solved· 5.9.19 in 39 minutes 24 seconds

5.9.19 edit

emixter June 28, 2026 at 05:29 AM

#19314

5.9.19 new solution

emixter June 28, 2026 at 04:49 AM

#19313

8 hours 19 minutes between problems

solved· 13.1.10

13.1.10 edit

astrosander June 27, 2026 at 08:29 PM

#19312

4 minutes between problems

solved· 11.4.25

11.4.25 edit

astrosander June 27, 2026 at 08:25 PM

#19311

53 minutes between problems

solved· 6.6.22 in 1 minute 55 seconds

6.6.22 edit

jzmicer June 27, 2026 at 07:31 PM

#19310

6.6.22 edit

jzmicer June 27, 2026 at 07:31 PM

#19309

6.6.22 edit

jzmicer June 27, 2026 at 07:31 PM

#19308

6.6.22 edit

jzmicer June 27, 2026 at 07:30 PM

#19307

6.6.22 new solution

jzmicer June 27, 2026 at 07:29 PM

#19306

2 hours 16 minutes between problems

solved· 7.4.10 in 6 minutes 3 seconds

7.4.10 edit

emixter June 27, 2026 at 05:13 PM

#19305

7.4.10 edit

emixter June 27, 2026 at 05:08 PM

#19304

7.4.10 edit

emixter June 27, 2026 at 05:07 PM

#19303

7.4.10 comment

emixter June 27, 2026 at 02:49 PM

thread

7.4.10 comment

emixter June 27, 2026 at 02:48 PM

thread

2 hours 22 minutes between problems

solved· 11.4.25

11.4.25 edit

dzedo June 27, 2026 at 02:44 PM

#19302

54 minutes between problems

solved· 7.4.10

7.4.10 comment

physicist June 27, 2026 at 01:50 PM

thread

7.4.10 comment

physicist June 27, 2026 at 01:49 PM

thread

1 minute between problems

solved· 13.1.10 in 12 seconds

13.1.10 edit

dzedo June 27, 2026 at 01:48 PM

#19301

13.1.10 edit

dzedo June 27, 2026 at 01:48 PM

#19300

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