1nk5/r3bppr/4p2n/q1p4p/pP3P2/BN2P1P1/2P1Q2P/R3K1NR b K - 0 21
FEN state: 1nk5/r3bppr/4p2n/q1p4p/pP3P2/BN2P1P1/2P1Q2P/R3K1NR b K - 0 21 ; Best move: a5b6
The current state of the chess board is: Black knight at b8 and black king at c8. Black rook at a7, black bishop at e7, black pawn at f7, black pawn at g7 and black rook at h7. Black pawn at e6 and black knight at h6. Black queen at a5, black pawn at c5 and black pawn at h5. Black pawn at a4, white pawn at b4 and white pawn at f4. White bishop at a3, white knight at b3, white pawn at e3 and white pawn at g3. White pawn at c2, white queen at e2 and white pawn at h2. White rook at a1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.