rnq1kbr1/2p1pp1p/pp1p4/P2b2p1/2QPnB2/4N2N/1PP1PPPP/R3KB1R w q - 4 13
FEN state: rnq1kbr1/2p1pp1p/pp1p4/P2b2p1/2QPnB2/4N2N/1PP1PPPP/R3KB1R w q - 4 13 ; Best move: c4d5
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at c7, black pawn at e7, black pawn at f7 and black pawn at h7. Black pawn at a6, black pawn at b6 and black pawn at d6. White pawn at a5, black bishop at d5 and black pawn at g5. White queen at c4, white pawn at d4, black knight at e4 and white bishop at f4. White knight at e3 and white knight at h3. White pawn at b2, white pawn at c2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white king at e1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 4. Full move number is 13. White to move.