Xor-mask coverage over at least 64 of 256 inputs · ○ open
Challenge
ladder rank
#22 (level L2)
family / transform
CoverageTransform / XorMask
cases
256 case(s), 1 output byte(s)
pass threshold
≥ 64 of 256 correct
limits
program ≤ 4096 bytes, ≤ 2048 steps/case
purpose
Same all-256 coverage scoring as cov32 with the threshold raised to 64. Passing it requires beating the shared-operand-pool ceiling of single-dispatch station architectures.
Notes
Partial-credit XOR: ≥64 of 256 bytes correct. Best known 27/256.
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.C1.xor51-cov64 --program your-candidate.mal --verbose