r1bq1b1r/ppp2k2/4pnp1/1nQp1p1p/P1P1P2P/1PB3P1/R3BP2/1N2K1NR w K - 0 15
FEN state: r1bq1b1r/ppp2k2/4pnp1/1nQp1p1p/P1P1P2P/1PB3P1/R3BP2/1N2K1NR w K - 0 15 ; Best move: c5b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7 and black king at f7. Black pawn at e6, black knight at f6 and black pawn at g6. Black knight at b5, white queen at c5, black pawn at d5, black pawn at f5 and black pawn at h5. White pawn at a4, white pawn at c4, white pawn at e4 and white pawn at h4. White pawn at b3, white bishop at c3 and white pawn at g3. White rook at a2, white bishop at e2 and white pawn at f2. White knight at b1, 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 0. Full move number is 15. White to move.