rn1qk1n1/p1p3pr/1p1Npp2/1b1p3p/1PPP1P1P/b3P3/P3B1P1/1RBQK1NR b K - 4 13
FEN state: rn1qk1n1/p1p3pr/1p1Npp2/1b1p3p/1PPP1P1P/b3P3/P3B1P1/1RBQK1NR b K - 4 13 ; Best move: d8d6
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8 and black knight at g8. Black pawn at a7, black pawn at c7, black pawn at g7 and black rook at h7. Black pawn at b6, white knight at d6, black pawn at e6 and black pawn at f6. Black bishop at b5, black pawn at d5 and black pawn at h5. White pawn at b4, white pawn at c4, white pawn at d4, white pawn at f4 and white pawn at h4. Black bishop at a3 and white pawn at e3. White pawn at a2, white bishop at e2 and white pawn at g2. White rook at b1, white bishop at c1, white queen at d1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 4. Full move number is 13. Black to move.