4kb2/rbp1pp2/p1n2npr/1p3P1p/P1pq4/1PNP3N/3BP1PP/1R1QKB1R b K - 3 13
FEN state: 4kb2/rbp1pp2/p1n2npr/1p3P1p/P1pq4/1PNP3N/3BP1PP/1R1QKB1R b K - 3 13 ; Best move: b5b4
The current state of the chess board is: Black king at e8 and black bishop at f8. Black rook at a7, black bishop at b7, black pawn at c7, black pawn at e7 and black pawn at f7. Black pawn at a6, black knight at c6, black knight at f6, black pawn at g6 and black rook at h6. Black pawn at b5, white pawn at f5 and black pawn at h5. White pawn at a4, black pawn at c4 and black queen at d4. White pawn at b3, white knight at c3, white pawn at d3 and white knight at h3. White bishop at d2, white pawn at e2, white pawn at g2 and white pawn at h2. White rook at b1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 3. Full move number is 13. Black to move.