rn2kbn1/ppp1pp1r/B2pq2p/6p1/3P2bN/2N1P3/PPPQ1P1P/1RB1RK2 w q - 2 13
FEN state: rn2kbn1/ppp1pp1r/B2pq2p/6p1/3P2bN/2N1P3/PPPQ1P1P/1RB1RK2 w q - 2 13 ; Best move: a6b7
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at e7, black pawn at f7 and black rook at h7. White bishop at a6, black pawn at d6, black queen at e6 and black pawn at h6. Black pawn at g5. White pawn at d4, black bishop at g4 and white knight at h4. White knight at c3 and white pawn at e3. White pawn at a2, white pawn at b2, white pawn at c2, white queen at d2, white pawn at f2 and white pawn at h2. White rook at b1, white bishop at c1, white rook at e1 and white king at f1. Black queenside is the only castle move available. Half move number is 2. Full move number is 13. White to move.