1rb1q1nr/n1p1kpbN/B2p4/1pPPpP1p/1P3QpP/P3P3/3B2P1/3RK1NR b K - 4 23
FEN state: 1rb1q1nr/n1p1kpbN/B2p4/1pPPpP1p/1P3QpP/P3P3/3B2P1/3RK1NR b K - 4 23 ; Best move: e5f4
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at e8, black knight at g8 and black rook at h8. Black knight at a7, black pawn at c7, black king at e7, black pawn at f7, black bishop at g7 and white knight at h7. White bishop at a6 and black pawn at d6. Black pawn at b5, white pawn at c5, white pawn at d5, black pawn at e5, white pawn at f5 and black pawn at h5. White pawn at b4, white queen at f4, black pawn at g4 and white pawn at h4. White pawn at a3 and white pawn at e3. White bishop at d2 and white pawn at g2. White rook at d1, 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 4. Full move number is 23. Black to move.