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L2.C0b.xor51-cov36
Xor-mask coverage over at least 36 of 256 inputs · ○ open
Challenge
- ladder rank
- #19 (level L2)
- family / transform
- CoverageTransform / XorMask
- cases
- 256 case(s), 1 output byte(s)
- pass threshold
- ≥ 36 of 256 correct
- limits
- program ≤ 4096 bytes, ≤ 2048 steps/case
- purpose
- Coverage-ladder step between cov32 and cov64: all 256 single-byte inputs, at least 36 exact xor51 outputs required, failures elsewhere tolerated.
Notes
Partial-credit XOR: ≥36 of 256 bytes correct. Best known 27/256.
Same enumeration with the threshold at 36. Best known program: 27 of 256.
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.C0b.xor51-cov36 --program your-candidate.mal --verbose