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Full XOR · 1,024 bytes

L2.X1024.xor-1-len1024

Native verification status · ○ open

What this result establishes

256-value first-byte sweep. Every first-byte value is tested for each of 1 cases over 256 epochs. The remaining input bytes are public deterministic samples. This does not exhaust all input strings or prove suffix independence.

Placement: New, uncalibrated milestone. A program passing a tighter XOR size cap also passes every looser cap with the same input sweep and step limit. How rank is interpreted.

Challenge

ladder rank

#33 (historical identifier L2)

family / transform

Transform / XorMask

cases

1 case, 1 output byte each

limits

program ≤ 1024 bytes, ≤ 2048 steps/case

task summary

Fit full single-byte XOR in 1,024 bytes.

exact contract

Registry JSON · L2.X1024.xor-1-len1024

Task notes

Fit full single-byte XOR in 1,024 bytes.

Attempts

6 recorded attempts · best 253/256 native · latest 2026-09-07. Counts include privately submitted traces; details on submitting.

Recorded attempts

Attempt it

git clone https://github.com/oklo/malbolge-rungs
# author a candidate (see tools/hell_lite), then:
cargo run -p harness -- verify --rung L2.X1024.xor-1-len1024 --program your-candidate.mal --verbose