r1bqkbr1/3p1p2/ppn1pn2/P1p1P1pp/2Q3PP/8/RPPPNP2/1NB1KB1R b K - 4 17
FEN state: r1bqkbr1/3p1p2/ppn1pn2/P1p1P1pp/2Q3PP/8/RPPPNP2/1NB1KB1R b K - 4 17 ; Best move: c6e5
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 rook at g8. Black pawn at d7 and black pawn at f7. Black pawn at a6, black pawn at b6, black knight at c6, black pawn at e6 and black knight at f6. White pawn at a5, black pawn at c5, white pawn at e5, black pawn at g5 and black pawn at h5. White queen at c4, white pawn at g4 and white pawn at h4. White rook at a2, white pawn at b2, white pawn at c2, white pawn at d2, white knight at e2 and white pawn at f2. White knight at b1, white bishop at c1, 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 4. Full move number is 17. Black to move.