rn2nb1r/ppk1qpBp/3pp3/7b/1p3P1P/P1N1PN2/1QPP2P1/R3KBR1 w Q - 1 13
FEN state: rn2nb1r/ppk1qpBp/3pp3/7b/1p3P1P/P1N1PN2/1QPP2P1/R3KBR1 w Q - 1 13 ; Best move: c3b5
The current state of the chess board is: Black rook at a8, black knight at b8, black knight at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black king at c7, black queen at e7, black pawn at f7, white bishop at g7 and black pawn at h7. Black pawn at d6 and black pawn at e6. Black bishop at h5. Black pawn at b4, white pawn at f4 and white pawn at h4. White pawn at a3, white knight at c3, white pawn at e3 and white knight at f3. White queen at b2, white pawn at c2, white pawn at d2 and white pawn at g2. White rook at a1, 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 1. Full move number is 13. White to move.