rnb3nr/1pp1k2p/4pp1b/P1P5/P2p1p2/2NP3P/q2QPPP1/R3KBNR b K - 8 16
FEN state: rnb3nr/1pp1k2p/4pp1b/P1P5/P2p1p2/2NP3P/q2QPPP1/R3KBNR b K - 8 16 ; Best move: a2a1
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7, black king at e7 and black pawn at h7. Black pawn at e6, black pawn at f6 and black bishop at h6. White pawn at a5 and white pawn at c5. White pawn at a4, black pawn at d4 and black pawn at f4. White knight at c3, white pawn at d3 and white pawn at h3. Black queen at a2, white queen at d2, white pawn at e2, white pawn at f2 and white pawn at g2. White rook at a1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 8. Full move number is 16. Black to move.