r1bq2r1/2pp1kpp/ppn1pp2/1P6/P1P5/2b3QP/3PPPPR/RNB1KBN1 w Q - 1 13
FEN state: r1bq2r1/2pp1kpp/ppn1pp2/1P6/P1P5/2b3QP/3PPPPR/RNB1KBN1 w Q - 1 13 ; Best move: b1c3
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black rook at g8. Black pawn at c7, black pawn at d7, black king at f7, black pawn at g7 and black pawn at h7. Black pawn at a6, black pawn at b6, black knight at c6, black pawn at e6 and black pawn at f6. White pawn at b5. White pawn at a4 and white pawn at c4. Black bishop at c3, white queen at g3 and white pawn at h3. White pawn at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white knight at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 13. White to move.