2bq1bnr/1ppkppp1/1rnp4/7p/pP2N1P1/3P4/P1P1PP1P/1RBQKBNR w K - 5 9
FEN state: 2bq1bnr/1ppkppp1/1rnp4/7p/pP2N1P1/3P4/P1P1PP1P/1RBQKBNR w K - 5 9 ; Best move: b4b5
The current state of the chess board is: 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 e7, black pawn at f7 and black pawn at g7. Black rook at b6, black knight at c6 and black pawn at d6. Black pawn at h5. Black pawn at a4, white pawn at b4, white knight at e4 and white pawn at g4. White pawn at d3. White pawn at a2, white pawn at c2, white pawn at e2, white pawn at f2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, 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 5. Full move number is 9. White to move.