rnbq1bnr/1ppk2pp/3ppp2/p7/1P6/P5PB/R1PPPP1P/1NBQK1NR w K - 1 6
FEN state: rnbq1bnr/1ppk2pp/3ppp2/p7/1P6/P5PB/R1PPPP1P/1NBQK1NR w K - 1 6 ; Best move: b4b5
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 bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7, black king at d7, black pawn at g7 and black pawn at h7. Black pawn at d6, black pawn at e6 and black pawn at f6. Black pawn at a5. White pawn at b4. White pawn at a3, white pawn at g3 and white bishop at h3. White rook at a2, white pawn at c2, white pawn at d2, white pawn at e2, white pawn at f2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at d1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 6. White to move.