r2qkb1r/1p2pp2/4bn1n/p1pp2p1/PP2P2p/3P1PPN/R1P4P/1NBQKBR1 b kq - 0 12
FEN state: r2qkb1r/1p2pp2/4bn1n/p1pp2p1/PP2P2p/3P1PPN/R1P4P/1NBQKBR1 b kq - 0 12 ; Best move: d5e4
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at e7 and black pawn at f7. Black bishop at e6, black knight at f6 and black knight at h6. Black pawn at a5, black pawn at c5, black pawn at d5 and black pawn at g5. White pawn at a4, white pawn at b4, white pawn at e4 and black pawn at h4. White pawn at d3, white pawn at f3, white pawn at g3 and white knight at h3. White rook at a2, white pawn at c2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 12. Black to move.