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L1.R2.echo-4

Echo four bytes · ● solved

Challenge

ladder rank

#6 (level L1)

family / transform

EchoPrefix / Identity

cases

1 case(s), 4 output byte(s)

limits

program ≤ 256 bytes, ≤ 1024 steps/case

purpose

Longer straight-line copying with more room for agent mistakes.

Winning program

solutions/echo/echo-4.mal · 9 bytes · sha256 cfded278793852a4bf892de139e3b3cc67680fcc3d822b42f40f6e67bf0dc69a

ubs`q^o\I

Solver

name

HeLL-Lite (tool)

type

tool

harness

tools/hell_lite compile-linear (deterministic straight-line template)

metric

1/1 case, 5 seeds

attribution notes

First-use opcode encoding of the straight-line IN/OUT sequence; each address has exactly one printable byte per opcode.

Notes

Echo the first 4 input bytes; 9-byte straight-line program.

Verification transcript (native VM, 3 epoch(s))

epoch 0 · seed b9e8340babf4… · 1/1 cases

epoch 1 · seed 7b651b57e150… · 1/1 cases

epoch 2 · seed 0c4caf1fd38a… · 1/1 cases

Reproduce

git clone https://github.com/oklo/malbolge-rungs
cargo run -p harness -- verify --rung L1.R2.echo-4 --program solutions/echo/echo-4.mal --epochs 3 --verbose