rnb1k2r/p2p1pb1/1p6/4p1Pp/PPp1P1n1/N7/1BPPQP2/R2KNB2 w q - 10 24
FEN state: rnb1k2r/p2p1pb1/1p6/4p1Pp/PPp1P1n1/N7/1BPPQP2/R2KNB2 w q - 10 24 ; Best move: a3c4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at d7, black pawn at f7 and black bishop at g7. Black pawn at b6. Black pawn at e5, white pawn at g5 and black pawn at h5. White pawn at a4, white pawn at b4, black pawn at c4, white pawn at e4 and black knight at g4. White knight at a3. White bishop at b2, white pawn at c2, white pawn at d2, white queen at e2 and white pawn at f2. White rook at a1, white king at d1, white knight at e1 and white bishop at f1. Black queenside is the only castle move available. Half move number is 10. Full move number is 24. White to move.