{"abstract":"En passant is rejected because a rook sits on a diagonal from the king.","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":"Testing only df==0 treats the horizontal rank as a diagonal, so rank pins are missed.","family":"w2-chess_move_legality-en-passant-legality-line-attacker-type","id":"FA-82431","implementations":{"attempt":{"sha256":"4484aeb4b6db33d01f587587571f9d300f1e4c28384347a673ff29a8ee6a0f5c","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[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 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  ('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 [('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  ('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 [('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  ('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  ('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  ('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  ('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 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  ('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)]]\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":"dbcec8dc16bf9a4b2552b87eede9c819f013f7d98a813d6d210ac058e37cc7a7","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[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','b'): 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  ('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 [('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  ('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 [('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  ('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  ('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  ('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  ('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 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  ('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)]]\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-line-attacker-type","generated_at":"2026-09-29T14:50:12.096336+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":"Every slider is accepted as an attacker on every line, ignoring that rooks need ranks and files.","sha256":"eaa4d617b7c0b76cd0c94abed7228705fa2493eddebd22caed0d862af7e37091","title":"Rook on a diagonal treated as a discovered checker · 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":42.269,"exit_code":1,"observations":[{"actual":true,"check":"plain ep","expected":true,"passed":true},{"actual":true,"check":"black ep","expected":true,"passed":true},{"actual":true,"check":"rank pin both pawns","expected":false,"passed":false},{"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":false,"check":"bishop on the rank","expected":true,"passed":false},{"actual":true,"check":"rook on the diagonal","expected":true,"passed":true}],"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\": true, \"expected\": false, \"passed\": false}, {\"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\": \"bishop on the rank\", \"actual\": false, \"expected\": true, \"passed\": false}, {\"check\": \"rook on the diagonal\", \"actual\": true, \"expected\": true, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.855,"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":false,"check":"bishop on the rank","expected":true,"passed":false},{"actual":false,"check":"rook on the diagonal","expected":true,"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\": \"bishop on the rank\", \"actual\": false, \"expected\": true, \"passed\": false}, {\"check\": \"rook on the diagonal\", \"actual\": false, \"expected\": true, \"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."}}