The program is the product. Gate ops, not library calls. Do not hunt a shorter one.

compress program loop glyphs rooms boards

PROGRAM

evolve found this sequence on AUTOFAB0: 4,816 B, 4.68% of source. 68 sequences evaluated, 21 beat baseline, all 68 stay drawable. Cite 07. zlib/bz2/lzma are terminal scorers only — they are not steps.

TRANSPOSEREV_COLSXOR_COLXOR_COLREV_COLSROT4

Anyone can run it here on published SEED0 or a dropped file. Apply, then invert. The page reports whether the grids match. That is a round-trip, not a verdict about the machine. evolve.py stays the search CLI. This door does not search.

drop bytes

load a plane, then apply.

before

after program

after invert

JS off. The recipe is TRANSPOSE → REV_COLS → XOR_COL → XOR_COL → REV_COLS → ROT4. Run python evolve.py FILE --width 200 if you have the repo. This page will not invent a shorter program.