r1b1kbn1/pq1p2p1/n3pp1r/1N3P2/1p2P1P1/7p/P2P1Q1P/R1B1KBNR w KQq - 0 20
FEN state: r1b1kbn1/pq1p2p1/n3pp1r/1N3P2/1p2P1P1/7p/P2P1Q1P/R1B1KBNR w KQq - 0 20 ; Best move: f2f4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black queen at b7, black pawn at d7 and black pawn at g7. Black knight at a6, black pawn at e6, black pawn at f6 and black rook at h6. White knight at b5 and white pawn at f5. Black pawn at b4, white pawn at e4 and white pawn at g4. Black pawn at h3. White pawn at a2, white pawn at d2, white queen at f2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside, white queenside and black queenside castles are available. Half move number is 0. Full move number is 20. White to move.