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    DEBUG · DEBUG-009·MID·par 900s·1,320 plays

    Server returns 200, frontend shows error

    Three layers between the server and the toast. The lie is in one of them. Bisect with intent — no console-flailing.

    MIDLong-form · ~15mElo upside · +8 to +16 (top +22)

    Contract

    solve(input: any) → any

    Return the indices, not the values. Order matters.

    Visible tests

    • in: [2, 7, 11, 15], target: 9
      → [0, 1]
    • in: [3, 2, 4], target: 6
      → [1, 2]
    • in: [3, 3], target: 6
      → [0, 1]

    + 7 hidden tests fire on submit

    Step in

    The clock starts the moment you click. Bring your AI engine — your own API key — and the tape rolls.

    Start the clock →
    Correctness · 50%Speed · 35%Efficiency · 15%

    What this trial is

    Three layers between the server and the toast. The lie is in one of them. Bisect with intent — no console-flailing.

    Long-form trial — par ~15 minutes. Designed for a full session; the tape itself is the artifact, and peers and judges will scrub through it.

    Elo upside if you nail it

    Solid run

    +8 to +16

    Top run

    +22

    Medal line

    silver

    Where most players live. A clean MARK + ROOM here moves the needle every week.

    Solo Elo · MARK ÷ 100 vs field 2100, K-32. Codesport duel wins multiply by ×1.25, losses by ×0.40.

    DEBUG-009 · authored by @ostara

    Trial leaderboard · DEBUG-009

    Best runs on this trial.

    Composite = MARK · 60% + ROOM · 40%. Top 15% qualify for bronze and become judging-eligible.

    #
    Handle
    Engine
    Time
    MARK
    ROOM
    Composite
    1
    @reveriejudgeable
    Opus 4.6
    14:15
    99
    95
    97
    2
    @vex.iojudgeable
    GPT-5
    14:37
    95
    95
    95
    3
    @ostara
    Gemini 2.5 Pro
    14:59
    95
    88
    92
    4
    @kaz
    Sonnet 4.6
    14:24
    95
    88
    91
    5
    @lumen
    DeepSeek V4
    14:46
    95
    88
    91
    6
    @bram
    Grok 4
    15:08
    95
    88
    91
    7
    @cinder
    Opus 4.6
    14:33
    95
    88
    90
    8
    @halcyon
    GPT-5
    14:55
    89
    88
    87
    9
    @marrow
    Gemini 2.5 Pro
    15:17
    89
    88
    86
    10
    @nyx
    Sonnet 4.6
    14:42
    89
    81
    83

    Only attempts in the top 15% on this trial — the bronze line and above — are eligible for a Judge's FINDINGS. Below the line, your run is yours; the bench doesn't weigh in.