r3kb1r/1b1p3p/ppnQpnpB/3B4/1q6/N4PP1/P1p2KNP/R6R w kq - 4 20
FEN state: r3kb1r/1b1p3p/ppnQpnpB/3B4/1q6/N4PP1/P1p2KNP/R6R w kq - 4 20 ; Best move: d6b4
The current state of the chess board is: Black rook at a8, black king at e8, black bishop at f8 and black rook at h8. Black bishop at b7, black pawn at d7 and black pawn at h7. Black pawn at a6, black pawn at b6, black knight at c6, white queen at d6, black pawn at e6, black knight at f6, black pawn at g6 and white bishop at h6. White bishop at d5. Black queen at b4. White knight at a3, white pawn at f3 and white pawn at g3. White pawn at a2, black pawn at c2, white king at f2, white knight at g2 and white pawn at h2. White rook at a1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 4. Full move number is 20. White to move.