2023 Monthly Challenges

1979 • 537 Readers • 420 pages • 3.8

1811 • 1,152 Readers • 432 pages • 3.8

1994 • 415 Readers • 286 pages • 3.9

1988 • 614 Readers • 361 pages • 4

197 • 851 Readers • 306 pages • 4.2

1986 • 537 Readers • 351 pages • 4

1972 • 472 Readers • 164 pages • 4.1

1937 • 2,791 Readers • 162 pages • 3.8

2011 • 374 Readers • 349 pages • 4

1990 • 2,674 Readers • 432 pages • 4.2

1996 • 550 Readers • 450 pages • 4.2

1996 • 314 Readers • 547 pages • 3.6

Added on 2022-01-13

2020 • 371 Readers • 160 pages • 4.3

1847 • 2,166 Readers • 376 pages • 3.6

2022 • 1,798 Readers • 258 pages • 4

2010 • 9 Readers • 336 pages

1994 • 372 Readers • 800 pages • 3.6

2021 • 22 Readers • 222 pages • 4.4

2012 • 1,613 Readers • 352 pages • 4.4

2023 • 243 Readers • 400 pages • 3.8

1939 • 2,452 Readers • 116 pages • 4.2

1939 • 1,602 Readers • 496 pages • 3.8

2018 • 702 Readers • 478 pages • 3.9

2001 • 202 Readers • 659 pages • 4

2022 • 604 Readers • 13h 27m • 3.6

1982 • 391 Readers • 241 pages • 3.7

2013 • 1,613 Readers • 366 pages • 4.1

1984 • 416 Readers • 427 pages • 3.9

2002 • 290 Readers • 605 pages • 3.7

2021 • 691 Readers • 493 pages • 4.1

19 • 2,155 Readers • 311 pages • 4.3

2008 • 187 Readers • 365 pages • 3.6

2021 • 256 Readers • 680 pages • 4.1

19 • 1,404 Readers • 544 pages • 3.6

2001 • 368 Readers • 694 pages • 3.1

Added on 2022-01-13

2018 • 1,902 Readers • 384 pages • 3.8