rnb1kbr1/pq1ppp1p/Bp2N2n/8/8/3pP3/PPPN1PPP/R1BQ1KR1 w q - 2 10
FEN state: rnb1kbr1/pq1ppp1p/Bp2N2n/8/8/3pP3/PPPN1PPP/R1BQ1KR1 w q - 2 10 ; Best move: a6b7
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black queen at b7, black pawn at d7, black pawn at e7, black pawn at f7 and black pawn at h7. White bishop at a6, black pawn at b6, white knight at e6 and black knight at h6. Black pawn at d3 and white pawn at e3. White pawn at a2, white pawn at b2, white pawn at c2, white knight at d2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at f1 and white rook at g1. Black queenside is the only castle move available. Half move number is 2. Full move number is 10. White to move.