r1bk1bnr/pp1p1p2/n3p2p/2p3p1/PQPP1P2/R7/4P1PP/1NB1KBNR w K - 0 9
FEN state: r1bk1bnr/pp1p1p2/n3p2p/2p3p1/PQPP1P2/R7/4P1PP/1NB1KBNR w K - 0 9 ; Best move: b4b2
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7 and black pawn at f7. Black knight at a6, black pawn at e6 and black pawn at h6. Black pawn at c5 and black pawn at g5. White pawn at a4, white queen at b4, white pawn at c4, white pawn at d4 and white pawn at f4. White rook at a3. White pawn at e2, white pawn at g2 and white pawn at h2. White knight at b1, white bishop at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 9. White to move.