rq2kb1r/2p1p2p/1p3p2/p2P1PpP/bPP3Q1/3B4/3P2P1/RNB1K2R w KQ - 0 20
FEN state: rq2kb1r/2p1p2p/1p3p2/p2P1PpP/bPP3Q1/3B4/3P2P1/RNB1K2R w KQ - 0 20 ; Best move: b4b5
The current state of the chess board is: Black rook at a8, black queen at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at e7 and black pawn at h7. Black pawn at b6 and black pawn at f6. Black pawn at a5, white pawn at d5, white pawn at f5, black pawn at g5 and white pawn at h5. Black bishop at a4, white pawn at b4, white pawn at c4 and white queen at g4. White bishop at d3. White pawn at d2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 20. White to move.