r1bqkbn1/p2pp3/1pp5/2n4r/1P1Ppp1P/PNP5/RB1K1PP1/5B1R b q - 2 15
FEN state: r1bqkbn1/p2pp3/1pp5/2n4r/1P1Ppp1P/PNP5/RB1K1PP1/5B1R b q - 2 15 ; Best move: c5b3
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at d7 and black pawn at e7. Black pawn at b6 and black pawn at c6. Black knight at c5 and black rook at h5. White pawn at b4, white pawn at d4, black pawn at e4, black pawn at f4 and white pawn at h4. White pawn at a3, white knight at b3 and white pawn at c3. White rook at a2, white bishop at b2, white king at d2, white pawn at f2 and white pawn at g2. White bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 15. Black to move.