rnbqk1n1/1pppppbr/p3N1p1/8/8/1PPP1N1p/P2KPPPP/R1BQ1B1R w q - 4 10
FEN state: rnbqk1n1/1pppppbr/p3N1p1/8/8/1PPP1N1p/P2KPPPP/R1BQ1B1R w q - 4 10 ; Best move: e6d8
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black knight at g8. Black pawn at b7, black pawn at c7, black pawn at d7, black pawn at e7, black pawn at f7, black bishop at g7 and black rook at h7. Black pawn at a6, white knight at e6 and black pawn at g6. White pawn at b3, white pawn at c3, white pawn at d3, white knight at f3 and black pawn at h3. White pawn at a2, white king at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 4. Full move number is 10. White to move.