1nq2knr/r6p/bp2ppp1/p1pp4/2PP4/PPQ1PNP1/5P1P/B1R1KB1R w K - 1 20
FEN state: 1nq2knr/r6p/bp2ppp1/p1pp4/2PP4/PPQ1PNP1/5P1P/B1R1KB1R w K - 1 20 ; Best move: c4d5
The current state of the chess board is: Black knight at b8, black queen at c8, black king at f8, black knight at g8 and black rook at h8. Black rook at a7 and black pawn at h7. Black bishop at a6, black pawn at b6, black pawn at e6, black pawn at f6 and black pawn at g6. Black pawn at a5, black pawn at c5 and black pawn at d5. White pawn at c4 and white pawn at d4. White pawn at a3, white pawn at b3, white queen at c3, white pawn at e3, white knight at f3 and white pawn at g3. White pawn at f2 and white pawn at h2. White bishop at a1, white rook at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 20. White to move.