rq2kbnr/2p1p1p1/3p1p1p/pp6/2PPPPn1/P1N4P/bP1K2R1/2BQ1BN1 b k - 0 15
FEN state: rq2kbnr/2p1p1p1/3p1p1p/pp6/2PPPPn1/P1N4P/bP1K2R1/2BQ1BN1 b k - 0 15 ; Best move: a2c4
The current state of the chess board is: Black rook at a8, black queen at b8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at c7, black pawn at e7 and black pawn at g7. Black pawn at d6, black pawn at f6 and black pawn at h6. Black pawn at a5 and black pawn at b5. White pawn at c4, white pawn at d4, white pawn at e4, white pawn at f4 and black knight at g4. White pawn at a3, white knight at c3 and white pawn at h3. Black bishop at a2, white pawn at b2, white king at d2 and white rook at g2. White bishop at c1, white queen at d1, white bishop at f1 and white knight at g1. Black kingside is the only castle move available. Half move number is 0. Full move number is 15. Black to move.