r1bq2nb/p1p1pk1r/2n3p1/1pPp1Rp1/1P6/N6P/P2PPPB1/R1BQK1N1 b Q - 0 15
FEN state: r1bq2nb/p1p1pk1r/2n3p1/1pPp1Rp1/1P6/N6P/P2PPPB1/R1BQK1N1 b Q - 0 15 ; Best move: c8f5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black knight at g8 and black bishop at h8. Black pawn at a7, black pawn at c7, black pawn at e7, black king at f7 and black rook at h7. Black knight at c6 and black pawn at g6. Black pawn at b5, white pawn at c5, black pawn at d5, white rook at f5 and black pawn at g5. White pawn at b4. White knight at a3 and white pawn at h3. White pawn at a2, white pawn at d2, white pawn at e2, white pawn at f2 and white bishop at g2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 15. Black to move.