r1q1k2r/p3ppbp/8/1pPpP3/5pbP/PP6/R1KQP1Pn/2B2BNR w kq - 0 20
FEN state: r1q1k2r/p3ppbp/8/1pPpP3/5pbP/PP6/R1KQP1Pn/2B2BNR w kq - 0 20 ; Best move: g1f3
The current state of the chess board is: Black rook at a8, black queen at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at e7, black pawn at f7, black bishop at g7 and black pawn at h7. Black pawn at b5, white pawn at c5, black pawn at d5 and white pawn at e5. Black pawn at f4, black bishop at g4 and white pawn at h4. White pawn at a3 and white pawn at b3. White rook at a2, white king at c2, white queen at d2, white pawn at e2, white pawn at g2 and black knight at h2. White bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 20. White to move.