Problems
Arena
2023 UDPC
Condition 2023 UDPC에 출전, 혹은 Open Contest에 출전해 두 문제 이상 해결231
2023 중앙대학교 CHAC
Condition 2023 중앙대학교 CHAC에 출전, 혹은 Open Contest에 출전해 210점 이상 달성138
The Art of Analysis
After a bad opening, there is hope for the middle game. After a bad middle game, there is hope for the endgame. But once you are in the endgame, the moment of truth has arrived.
Condition Solved 7 or more problems in the Boardgame Cup105
The Entrepreneur's Guide to Mars
Coming to Mars was a big step. Making it habitable will give us a new world.
Condition Solved 5 or more problems in the Boardgame Cup262
Black and White
Life, like backgammon, is constant decision-making under uncertainty.
Condition Solved 3 or more problems in the Boardgame Cup481
Full Binary Christmas Tree
Condition Reach level 4 or deeper on the deepest ornament card in the Make a Tree event, 20221.1K
365 Days of Brilliance
Condition Achieve max streak of 365 days869
Season 2021 — Gold I
Condition Reached Gold I in Season 20212.9K
Magician of the Library
Celebrated the 2nd anniversary of solved.ac
Condition Solve 1 or more previously unsolved problems between 6:00 AM on May 30, 2022 and 6:00 AM on June 6, 20229.7K
Icons: Dark Mode
Icons in solved.ac, now in dark mode.
Condition (Hidden)4.3K
Green Matrix Grid: Dark Mode
More epic green matrix grid
Condition (Hidden)8.7K
God's Queries on This Wonderful Arrays!
Seeing that the value written in the Nth sequence in front of your house changes every day, you became angry and decided to sue Hanbyeol.
Condition Solve 1 or more problems which has '수열' or '쿼리' in its Korean version of the title, at some point after March 22, 20225.5K
200 Days of Diligence
Condition Achieve max streak of 200 days1.8K
All Solve! — Gold V
Condition Solved every Gold V problem after November 30th, 20215
100 Days of Consistency
Condition Achieve max streak of 100 days3.8K
30 Days of Sincerity
Condition Achieve max streak of 30 days11K
Standard Library
Celebrated the 1st anniversary of solved.ac
Condition Solved previously unsolved problem at between May 31st, 2021 00:00 and June 8th, 2021 00:00 (KST)5K
Season 2020 — Gold I
Condition Reached Gold I in Season 2020665