1r1qkb1r/1pp1p3/p4ppn/1N1p3p/3PPPbP/P2Q4/1PP2KP1/R1B3NR b k - 1 12
FEN state: 1r1qkb1r/1pp1p3/p4ppn/1N1p3p/3PPPbP/P2Q4/1PP2KP1/R1B3NR b k - 1 12 ; Best move: a6b5
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at c7 and black pawn at e7. Black pawn at a6, black pawn at f6, black pawn at g6 and black knight at h6. White knight at b5, black pawn at d5 and black pawn at h5. White pawn at d4, white pawn at e4, white pawn at f4, black bishop at g4 and white pawn at h4. White pawn at a3 and white queen at d3. White pawn at b2, white pawn at c2, white king at f2 and white pawn at g2. White rook at a1, white bishop at c1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 1. Full move number is 12. Black to move.