4k2r/rpp1pp1p/2n1bn1b/p2q1Pp1/8/PPP4N/Q2P2PP/RNBK1BR1 b k - 3 13
FEN state: 4k2r/rpp1pp1p/2n1bn1b/p2q1Pp1/8/PPP4N/Q2P2PP/RNBK1BR1 b k - 3 13 ; Best move: e6f5
The current state of the chess board is: Black king at e8 and black rook at h8. Black rook at a7, black pawn at b7, black pawn at c7, black pawn at e7, black pawn at f7 and black pawn at h7. Black knight at c6, black bishop at e6, black knight at f6 and black bishop at h6. Black pawn at a5, black queen at d5, white pawn at f5 and black pawn at g5. White pawn at a3, white pawn at b3, white pawn at c3 and white knight at h3. White queen at a2, white pawn at d2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at d1, white bishop at f1 and white rook at g1. Black kingside is the only castle move available. Half move number is 3. Full move number is 13. Black to move.