r2Nkbn1/p1ppp2r/7p/1p4p1/1n3PP1/P6P/2PPP3/RNBQKB1b w Qq - 0 10
FEN state: r2Nkbn1/p1ppp2r/7p/1p4p1/1n3PP1/P6P/2PPP3/RNBQKB1b w Qq - 0 10 ; Best move: a3b4
The current state of the chess board is: Black rook at a8, white knight at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at e7 and black rook at h7. Black pawn at h6. Black pawn at b5 and black pawn at g5. Black knight at b4, white pawn at f4 and white pawn at g4. White pawn at a3 and white pawn at h3. White pawn at c2, white pawn at d2 and white pawn at e2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and black bishop at h1. White queenside and black queenside castles are available. Half move number is 0. Full move number is 10. White to move.