rn1kN1nr/pp4p1/3bPp2/3p1qP1/2p4p/PP2PP2/2P4P/R1BQKbR1 w Q - 2 21
FEN state: rn1kN1nr/pp4p1/3bPp2/3p1qP1/2p4p/PP2PP2/2P4P/R1BQKbR1 w Q - 2 21 ; Best move: e8d6
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8, white knight at e8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7 and black pawn at g7. Black bishop at d6, white pawn at e6 and black pawn at f6. Black pawn at d5, black queen at f5 and white pawn at g5. Black pawn at c4 and black pawn at h4. White pawn at a3, white pawn at b3, white pawn at e3 and white pawn at f3. White pawn at c2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at e1, black bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 2. Full move number is 21. White to move.