{"abstract":"Every en passant capture is rejected because the target square is empty.","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":"Using the origin file and destination rank points at the empty square in front of the capturer.","family":"w2-chess_move_legality-en-passant-legality-captured-pawn-square","id":"FA-82411","implementations":{"attempt":{"sha256":"71eeaf20d0802763282c91b5fe3ca587ae194ae1862a635cdbfc94ea84eaff09","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!=x['ep']: 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=fr[0]+to[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  ('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 [('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  ('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  ('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  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False),\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  ('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  ('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 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 [('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  ('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  ('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 [('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  ('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  ('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)]]\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":"a107ea465041c86e5133167c2d62973f6c77a77d4f41e13062b2675798ff5b37","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!=x['ep']: 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\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  ('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 [('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  ('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  ('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  ('same file ep target',\n   {'board': {'d5': 'p', 'e1': 'K', 'e5': 'P', 'e8': 'k'}, 'ep': 'd3', 'move': ['e5', 'd6']},\n   False),\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  ('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  ('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 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 [('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  ('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  ('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 [('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  ('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  ('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)]]\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-captured-pawn-square","generated_at":"2026-09-29T14:50:12.023485+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 captured pawn is assumed to stand on the destination, but in en passant it stands beside the capturer on the origin rank.","sha256":"38766bf2190dfd43d5192ad6000eaac02e265cfed2fb59913e048d7b8da08883","title":"En passant looks for the victim on the target square · 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":40.745,"exit_code":1,"observations":[{"actual":false,"check":"plain ep","expected":true,"passed":false},{"actual":false,"check":"black ep","expected":true,"passed":false},{"actual":false,"check":"rank pin both pawns","expected":false,"passed":true},{"actual":false,"check":"rank pin black side","expected":false,"passed":true},{"actual":false,"check":"no ep square","expected":false,"passed":true},{"actual":false,"check":"wrong target","expected":false,"passed":true},{"actual":false,"check":"wrong rank for white","expected":false,"passed":true},{"actual":false,"check":"black wrong rank","expected":false,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"plain ep\", \"actual\": false, \"expected\": true, \"passed\": false}, {\"check\": \"black ep\", \"actual\": false, \"expected\": true, \"passed\": false}, {\"check\": \"rank pin both pawns\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"rank pin black side\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"no ep square\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"wrong target\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"wrong rank for white\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"black wrong rank\", \"actual\": false, \"expected\": false, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.886,"exit_code":1,"observations":[{"actual":false,"check":"plain ep","expected":true,"passed":false},{"actual":false,"check":"black ep","expected":true,"passed":false},{"actual":false,"check":"rank pin both pawns","expected":false,"passed":true},{"actual":false,"check":"rank pin black side","expected":false,"passed":true},{"actual":false,"check":"no ep square","expected":false,"passed":true},{"actual":false,"check":"wrong target","expected":false,"passed":true},{"actual":false,"check":"wrong rank for white","expected":false,"passed":true},{"actual":false,"check":"black wrong rank","expected":false,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"plain ep\", \"actual\": false, \"expected\": true, \"passed\": false}, {\"check\": \"black ep\", \"actual\": false, \"expected\": true, \"passed\": false}, {\"check\": \"rank pin both pawns\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"rank pin black side\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"no ep square\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"wrong target\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"wrong rank for white\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"black wrong rank\", \"actual\": false, \"expected\": false, \"passed\": true}], \"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."}}