r1b1kbr1/1pp1pp2/p2p1p1p/3Pn2n/q1P5/P3PQ1P/1P1N1PP1/1RK2BNR b q - 2 16
FEN state: r1b1kbr1/1pp1pp2/p2p1p1p/3Pn2n/q1P5/P3PQ1P/1P1N1PP1/1RK2BNR b q - 2 16 ; Best move: e5f3
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at b7, black pawn at c7, black pawn at e7 and black pawn at f7. Black pawn at a6, black pawn at d6, black pawn at f6 and black pawn at h6. White pawn at d5, black knight at e5 and black knight at h5. Black queen at a4 and white pawn at c4. White pawn at a3, white pawn at e3, white queen at f3 and white pawn at h3. White pawn at b2, white knight at d2, white pawn at f2 and white pawn at g2. White rook at b1, white king at c1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 16. Black to move.