r2qkb1r/p1ppp1pp/5pbn/Q7/P2n4/1p1P1P1P/1PP1P2R/RNB1KBN1 w Qkq - 0 13
FEN state: r2qkb1r/p1ppp1pp/5pbn/Q7/P2n4/1p1P1P1P/1PP1P2R/RNB1KBN1 w Qkq - 0 13 ; Best move: b1a3
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at e7, black pawn at g7 and black pawn at h7. Black pawn at f6, black bishop at g6 and black knight at h6. White queen at a5. White pawn at a4 and black knight at d4. Black pawn at b3, white pawn at d3, white pawn at f3 and white pawn at h3. White pawn at b2, white pawn at c2, white pawn at e2 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, black kingside and black queenside castles are available. Half move number is 0. Full move number is 13. White to move.