rn2kb1r/pb1p1n1p/N4p2/1pp1p1p1/2P3P1/P2PP1N1/RP3P1P/2BQKBR1 b q - 0 13
FEN state: rn2kb1r/pb1p1n1p/N4p2/1pp1p1p1/2P3P1/P2PP1N1/RP3P1P/2BQKBR1 b q - 0 13 ; Best move: b8a6
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black bishop at b7, black pawn at d7, black knight at f7 and black pawn at h7. White knight at a6 and black pawn at f6. Black pawn at b5, black pawn at c5, black pawn at e5 and black pawn at g5. White pawn at c4 and white pawn at g4. White pawn at a3, white pawn at d3, white pawn at e3 and white knight at g3. White rook at a2, white pawn at b2, white pawn at f2 and white pawn at h2. White bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. Black queenside is the only castle move available. Half move number is 0. Full move number is 13. Black to move.