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Platinum IV
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Arena
old_man_and_the_seaPlatinum IV
old_man_and_the_sea5
Platinum IV 187525 until Platinum III

22.08.25 ~ 23.09.02 / 365 Days of Brilliance

405 Solved2 Contributions5 Reverse rivals
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Date Added# Unlocked UsersTier
  • Level 1 Sprout
    Solved problems for 2 days in a row
    123K
  • Level 2 Sprout
    Level 2 Sprout
    Solved problems for 4 days in a row
    78K
  • Level 3 Sprout
    Level 3 Sprout
    Solved problems for 8 days in a row
    36K
  • Level 4 Sprout
    Solved problems for 16 days in a row
    19K
  • Level 5 Sprout
    Level 5 Sprout
    Solved problems for 32 days in a row
    11K
  • Level 6 Sprout
    Solved problems for 64 days in a row
    6.6K
  • Level 7 Sprout
    Level 7 Sprout
    Solved problems for 128 days in a row
    3.5K
  • Level 8 Sprout
    Level 8 Sprout
    Solved problems for 256 days in a row
    1.7K
  • The 1st Chocolate Cup (2022)
    The 1st Chocolate Cup (2022)
    Solved 1 or more problems in the 1st Chocolate Cup
    191
  • Christmas Gift (2022)
    Christmas Gift (2022)
    Earn at least 5 gifts from the Make a Tree event, 2022
    725
  • 2022 1st Calculus, Probability, and Statistics Cup
    2022 1st Calculus, Probability, and Statistics Cup
    Solved 1 or more problems in the 2022 1st Calculus, Probability, and Statistics Cup
    359
  • Newbie Problem-solver
    Newbie Problem-solver
    Solve 10 problems
    150K
  • Beginner Problem-solver
    Beginner Problem-solver
    Solve 50 problems
    104K
  • Apprentice Problem-solver
    Apprentice Problem-solver
    Solve 100 problems
    66K
  • Skilled Problem-solver
    Skilled Problem-solver
    Solve 200 problems
    31K
  • Boardgame Cup (2023)
    Boardgame Cup (2023)
    Solved 1 or more problems in Boardgame Cup
    584
  • The 2nd MatKor Cup : 2023 Winter
    The 2nd MatKor Cup : 2023 Winter
    Participated in the 2nd MatKor Cup, or solved 1 or more problems in its open contest
    473
  • 2023 KSA Automata Winter Contest
    2023 KSA Automata Winter Contest
    Achieved a score of over 100 in the 2023 KSA Automata Winter Contest
    362
  • Anime Cup (2023)
    Anime Cup (2023)
    Solved 1 or more problems in Anime Cup Season 1 or 2
    766
  • Spend 2023 with BOJ
    Spend 2023 with BOJ
    Solved 1 or more problems in Hello, BOJ 2023!
    290
    • 12