r1b1k2r/p1pp3p/n3pqpb/1NP2p2/PP5P/3P1P2/2KRP3/2B2BNn w q - 0 20
FEN state: r1b1k2r/p1pp3p/n3pqpb/1NP2p2/PP5P/3P1P2/2KRP3/2B2BNn w q - 0 20 ; Best move: d3d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7 and black pawn at h7. Black knight at a6, black pawn at e6, black queen at f6, black pawn at g6 and black bishop at h6. White knight at b5, white pawn at c5 and black pawn at f5. White pawn at a4, white pawn at b4 and white pawn at h4. White pawn at d3 and white pawn at f3. White king at c2, white rook at d2 and white pawn at e2. White bishop at c1, white bishop at f1, white knight at g1 and black knight at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 20. White to move.