r1bnk2r/1p1p2pp/3b1p1n/Q1p1p3/1qP1P3/BP1P3P/P3KPPR/RN3BN1 w kq - 3 13
FEN state: r1bnk2r/1p1p2pp/3b1p1n/Q1p1p3/1qP1P3/BP1P3P/P3KPPR/RN3BN1 w kq - 3 13 ; Best move: a3b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at d8, black king at e8 and black rook at h8. Black pawn at b7, black pawn at d7, black pawn at g7 and black pawn at h7. Black bishop at d6, black pawn at f6 and black knight at h6. White queen at a5, black pawn at c5 and black pawn at e5. Black queen at b4, white pawn at c4 and white pawn at e4. White bishop at a3, white pawn at b3, white pawn at d3 and white pawn at h3. White pawn at a2, white king 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 f1 and white knight at g1. Black kingside and black queenside castles are available. Half move number is 3. Full move number is 13. White to move.