rnbq2nr/pp2kp1p/3p3b/2p1p1p1/PPP3P1/1QN2N1P/3PPP2/R1B1KBR1 w Q - 5 10
FEN state: rnbq2nr/pp2kp1p/3p3b/2p1p1p1/PPP3P1/1QN2N1P/3PPP2/R1B1KBR1 w Q - 5 10 ; Best move: b4c5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black king at e7, black pawn at f7 and black pawn at h7. Black pawn at d6 and black bishop at h6. Black pawn at c5, black pawn at e5 and black pawn at g5. White pawn at a4, white pawn at b4, white pawn at c4 and white pawn at g4. White queen at b3, white knight at c3, white knight at f3 and white pawn at h3. White pawn at d2, white pawn at e2 and white pawn at f2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 5. Full move number is 10. White to move.