r3k2r/1p1bbR1p/3pp3/pBqnNP2/1n1pPP2/P7/3Q3P/RNB1K3 w kq - 4 20
FEN state: r3k2r/1p1bbR1p/3pp3/pBqnNP2/1n1pPP2/P7/3Q3P/RNB1K3 w kq - 4 20 ; Best move: b5d7
The current state of the chess board is: Black rook at a8, black king at e8 and black rook at h8. Black pawn at b7, black bishop at d7, black bishop at e7, white rook at f7 and black pawn at h7. Black pawn at d6 and black pawn at e6. Black pawn at a5, white bishop at b5, black queen at c5, black knight at d5, white knight at e5 and white pawn at f5. Black knight at b4, black pawn at d4, white pawn at e4 and white pawn at f4. White pawn at a3. White queen at d2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1 and white king at e1. Black kingside and black queenside castles are available. Half move number is 4. Full move number is 20. White to move.