{"abstract":"With ep on d6, a pawn capturing diagonally onto an empty f6 is treated as en passant.","category":"Chess move legality","checks":8,"contract":"Input: {\"board\", \"move\": [from, to], \"ep\": target square or null}. Return true when the move is a legal en passant capture: a pawn on its fifth rank moves diagonally forward onto the ep square, an enemy pawn stands beside it on the origin rank, and after removing both pawns from their squares and placing the capturer, no enemy rook, bishop or queen attacks the mover's king along an open line.","contract_signature":"x","evaluation_group":"w2-chess_move_legality-en-passant-legality","failed_approach":"Matching the file alone accepts a target on the wrong rank and fails when there is no ep square.","family":"w2-chess_move_legality-en-passant-legality-target-square-match","id":"FA-82426","implementations":{"attempt":{"sha256":"40deeff6dbdaf645b363634e6acb08dfc506679d5396c39874715223f3f282b5","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    b=dict(x['board']); fr,to=x['move']; p=b.get(fr)\n    if p not in ('P','p') or to[0]!=x['ep'][0]: return False\n    white=p=='P'\n    d=1 if white else -1\n    f0,r0=ord(fr[0])-97,int(fr[1])-1\n    f1,r1=ord(to[0])-97,int(to[1])-1\n    if r1-r0!=d or abs(f1-f0)!=1: return False\n    if r0!=(4 if white else 3): return False\n    victim=to[0]+fr[1]\n    if b.get(victim)!=('p' if white else 'P'): return False\n    del b[fr]; del b[victim]; b[to]=p\n    ks=[s for s,v in b.items() if v==('K' if white else 'k')][0]\n    kf,kr=ord(ks[0])-97,int(ks[1])-1\n    for df,dr in ((1,0),(-1,0),(0,1),(0,-1),(1,1),(1,-1),(-1,1),(-1,-1)):\n        cf,cr=kf+df,kr+dr\n        while 0<=cf<8 and 0<=cr<8:\n            v=b.get(chr(97+cf)+str(cr+1))\n            if v:\n                if v.isupper()!=white and v.lower() in (('r','q') if df==0 or dr==0 else ('b','q')): return False\n                break\n            cf+=df; cr+=dr\n    return True\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('plain ep',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd6', 'move': ['e5', 'd6']},\n   True),\n  ('black ep',\n   {'board': {'d4': 'p', 'e1': 'K', 'e4': 'P', 'e8': 'k'}, 'ep': 'e3', 'move': ['d4', 'e3']},\n   True),\n  ('rank pin both pawns',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'r'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   False),\n  ('rank pin black side',\n   {'board': {'a4': 'Q', 'd4': 'p', 'e1': 'K', 'e4': 'P', 'h4': 'k'},\n    'ep': 'e3',\n    'move': ['d4', 'e3']},\n   False),\n  ('bishop diagonal after ep',\n   {'board': {'c3': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p', 'f6': 'n', 'h8': 'b'},\n    'ep': 'f6',\n    'move': ['e5', 'f6']},\n   True),\n  ('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False)],\n [('rank pin black side',\n   {'board': {'a4': 'Q', 'd4': 'p', 'e1': 'K', 'e4': 'P', 'h4': 'k'},\n    'ep': 'e3',\n    'move': ['d4', 'e3']},\n   False),\n  ('bishop diagonal after ep',\n   {'board': {'c3': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p', 'f6': 'n', 'h8': 'b'},\n    'ep': 'f6',\n    'move': ['e5', 'f6']},\n   True),\n  ('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('wrong rank for white',\n   {'board': {'d4': 'p', 'e1': 'K', 'e4': 'P', 'e8': 'k'}, 'ep': 'd5', 'move': ['e4', 'd5']},\n   False),\n  ('black wrong rank',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'e4', 'move': ['d5', 'e4']},\n   False),\n  ('file rook behind pawn',\n   {'board': {'d1': 'K', 'd5': 'p', 'd8': 'r', 'e5': 'P', 'e8': 'k'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False)],\n [('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('black wrong rank',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'e4', 'move': ['d5', 'e4']},\n   False),\n  ('file rook behind pawn',\n   {'board': {'d1': 'K', 'd5': 'p', 'd8': 'r', 'e5': 'P', 'e8': 'k'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False),\n  ('pin by own rook harmless',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'R'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('bishop on the rank',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'b'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('rook on the diagonal',\n   {'board': {'c3': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'g7': 'r'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True)],\n [('plain ep',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd6', 'move': ['e5', 'd6']},\n   True),\n  ('black ep',\n   {'board': {'d4': 'p', 'e1': 'K', 'e4': 'P', 'e8': 'k'}, 'ep': 'e3', 'move': ['d4', 'e3']},\n   True),\n  ('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False),\n  ('bishop on the rank',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'b'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('rook on the diagonal',\n   {'board': {'c3': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'g7': 'r'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('rook on file of ep square',\n   {'board': {'a1': 'K', 'd1': 'r', 'd5': 'p', 'e5': 'P', 'e8': 'k'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   False)],\n [('plain ep',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd6', 'move': ['e5', 'd6']},\n   True),\n  ('black ep',\n   {'board': {'d4': 'p', 'e1': 'K', 'e4': 'P', 'e8': 'k'}, 'ep': 'e3', 'move': ['d4', 'e3']},\n   True),\n  ('rank pin both pawns',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'r'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   False),\n  ('rank pin black side',\n   {'board': {'a4': 'Q', 'd4': 'p', 'e1': 'K', 'e4': 'P', 'h4': 'k'},\n    'ep': 'e3',\n    'move': ['d4', 'e3']},\n   False),\n  ('bishop diagonal after ep',\n   {'board': {'c3': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p', 'f6': 'n', 'h8': 'b'},\n    'ep': 'f6',\n    'move': ['e5', 'f6']},\n   True),\n  ('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False)]]\nfor label, args, expected in fixtures[N-1]:\n    try:\n        actual = solve(args)\n    except Exception as exc:\n        actual = 'error:' + type(exc).__name__\n    check(label, actual, expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"466991438e70a5958f72cc7270c5f208d8151a70f71d00e59e94672872f7cf18","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    b=dict(x['board']); fr,to=x['move']; p=b.get(fr)\n    if p not in ('P','p') or x['ep'] is None: return False\n    white=p=='P'\n    d=1 if white else -1\n    f0,r0=ord(fr[0])-97,int(fr[1])-1\n    f1,r1=ord(to[0])-97,int(to[1])-1\n    if r1-r0!=d or abs(f1-f0)!=1: return False\n    if r0!=(4 if white else 3): return False\n    victim=to[0]+fr[1]\n    if b.get(victim)!=('p' if white else 'P'): return False\n    del b[fr]; del b[victim]; b[to]=p\n    ks=[s for s,v in b.items() if v==('K' if white else 'k')][0]\n    kf,kr=ord(ks[0])-97,int(ks[1])-1\n    for df,dr in ((1,0),(-1,0),(0,1),(0,-1),(1,1),(1,-1),(-1,1),(-1,-1)):\n        cf,cr=kf+df,kr+dr\n        while 0<=cf<8 and 0<=cr<8:\n            v=b.get(chr(97+cf)+str(cr+1))\n            if v:\n                if v.isupper()!=white and v.lower() in (('r','q') if df==0 or dr==0 else ('b','q')): return False\n                break\n            cf+=df; cr+=dr\n    return True\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('plain ep',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd6', 'move': ['e5', 'd6']},\n   True),\n  ('black ep',\n   {'board': {'d4': 'p', 'e1': 'K', 'e4': 'P', 'e8': 'k'}, 'ep': 'e3', 'move': ['d4', 'e3']},\n   True),\n  ('rank pin both pawns',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'r'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   False),\n  ('rank pin black side',\n   {'board': {'a4': 'Q', 'd4': 'p', 'e1': 'K', 'e4': 'P', 'h4': 'k'},\n    'ep': 'e3',\n    'move': ['d4', 'e3']},\n   False),\n  ('bishop diagonal after ep',\n   {'board': {'c3': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p', 'f6': 'n', 'h8': 'b'},\n    'ep': 'f6',\n    'move': ['e5', 'f6']},\n   True),\n  ('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False)],\n [('rank pin black side',\n   {'board': {'a4': 'Q', 'd4': 'p', 'e1': 'K', 'e4': 'P', 'h4': 'k'},\n    'ep': 'e3',\n    'move': ['d4', 'e3']},\n   False),\n  ('bishop diagonal after ep',\n   {'board': {'c3': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p', 'f6': 'n', 'h8': 'b'},\n    'ep': 'f6',\n    'move': ['e5', 'f6']},\n   True),\n  ('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('wrong rank for white',\n   {'board': {'d4': 'p', 'e1': 'K', 'e4': 'P', 'e8': 'k'}, 'ep': 'd5', 'move': ['e4', 'd5']},\n   False),\n  ('black wrong rank',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'e4', 'move': ['d5', 'e4']},\n   False),\n  ('file rook behind pawn',\n   {'board': {'d1': 'K', 'd5': 'p', 'd8': 'r', 'e5': 'P', 'e8': 'k'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False)],\n [('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('black wrong rank',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'e4', 'move': ['d5', 'e4']},\n   False),\n  ('file rook behind pawn',\n   {'board': {'d1': 'K', 'd5': 'p', 'd8': 'r', 'e5': 'P', 'e8': 'k'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False),\n  ('pin by own rook harmless',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'R'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('bishop on the rank',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'b'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('rook on the diagonal',\n   {'board': {'c3': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'g7': 'r'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True)],\n [('plain ep',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd6', 'move': ['e5', 'd6']},\n   True),\n  ('black ep',\n   {'board': {'d4': 'p', 'e1': 'K', 'e4': 'P', 'e8': 'k'}, 'ep': 'e3', 'move': ['d4', 'e3']},\n   True),\n  ('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False),\n  ('bishop on the rank',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'b'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('rook on the diagonal',\n   {'board': {'c3': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'g7': 'r'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   True),\n  ('rook on file of ep square',\n   {'board': {'a1': 'K', 'd1': 'r', 'd5': 'p', 'e5': 'P', 'e8': 'k'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   False)],\n [('plain ep',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd6', 'move': ['e5', 'd6']},\n   True),\n  ('black ep',\n   {'board': {'d4': 'p', 'e1': 'K', 'e4': 'P', 'e8': 'k'}, 'ep': 'e3', 'move': ['d4', 'e3']},\n   True),\n  ('rank pin both pawns',\n   {'board': {'a5': 'K', 'd5': 'p', 'e5': 'P', 'e8': 'k', 'h5': 'r'},\n    'ep': 'd6',\n    'move': ['e5', 'd6']},\n   False),\n  ('rank pin black side',\n   {'board': {'a4': 'Q', 'd4': 'p', 'e1': 'K', 'e4': 'P', 'h4': 'k'},\n    'ep': 'e3',\n    'move': ['d4', 'e3']},\n   False),\n  ('bishop diagonal after ep',\n   {'board': {'c3': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p', 'f6': 'n', 'h8': 'b'},\n    'ep': 'f6',\n    'move': ['e5', 'f6']},\n   True),\n  ('no ep square',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': None, 'move': ['e5', 'd6']},\n   False),\n  ('wrong target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k', 'f5': 'p'},\n    'ep': 'd6',\n    'move': ['e5', 'f6']},\n   False),\n  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False)]]\nfor label, args, expected in fixtures[N-1]:\n    try:\n        actual = solve(args)\n    except Exception as exc:\n        actual = 'error:' + type(exc).__name__\n    check(label, actual, expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"A deterministic toy model with an explicitly stated contract; boards are {square: piece} with white upper-case and black lower-case pieces; no claim of full FIDE Laws conformance. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-chess_move_legality-en-passant-legality-target-square-match","generated_at":"2026-09-29T14:50:12.054384+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Move validators gate every move in engines, servers and arbiters; accepting an illegal move or rejecting a legal one corrupts the game record.","root_cause":"The validator checks only that some en passant target exists, not that the move lands on it.","sha256":"6fb58b42ea93c3aa54335a8463b0b399a75220eecc58d77d50004a2441e8ffae","title":"Any diagonal step accepted while an ep square exists · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":42.1,"exit_code":1,"observations":[{"actual":true,"check":"plain ep","expected":true,"passed":true},{"actual":true,"check":"black ep","expected":true,"passed":true},{"actual":false,"check":"rank pin both pawns","expected":false,"passed":true},{"actual":false,"check":"rank pin black side","expected":false,"passed":true},{"actual":true,"check":"bishop diagonal after ep","expected":true,"passed":true},{"actual":"error:TypeError","check":"no ep square","expected":false,"passed":false},{"actual":false,"check":"wrong target","expected":false,"passed":true},{"actual":true,"check":"same file ep target","expected":false,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"plain ep\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"black ep\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"rank pin both pawns\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"rank pin black side\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"bishop diagonal after ep\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"no ep square\", \"actual\": \"error:TypeError\", \"expected\": false, \"passed\": false}, {\"check\": \"wrong target\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"same file ep target\", \"actual\": true, \"expected\": false, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":41.542,"exit_code":1,"observations":[{"actual":true,"check":"plain ep","expected":true,"passed":true},{"actual":true,"check":"black ep","expected":true,"passed":true},{"actual":false,"check":"rank pin both pawns","expected":false,"passed":true},{"actual":false,"check":"rank pin black side","expected":false,"passed":true},{"actual":true,"check":"bishop diagonal after ep","expected":true,"passed":true},{"actual":false,"check":"no ep square","expected":false,"passed":true},{"actual":true,"check":"wrong target","expected":false,"passed":false},{"actual":true,"check":"same file ep target","expected":false,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"plain ep\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"black ep\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"rank pin both pawns\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"rank pin black side\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"bishop diagonal after ep\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"no ep square\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"wrong target\", \"actual\": true, \"expected\": false, \"passed\": false}, {\"check\": \"same file ep target\", \"actual\": true, \"expected\": false, \"passed\": false}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}