r2qkbnr/3npp1p/pNppb3/6p1/1p5N/PP1P4/1RP1PPPP/2BQKB1R b Kkq - 0 10
FEN state: r2qkbnr/3npp1p/pNppb3/6p1/1p5N/PP1P4/1RP1PPPP/2BQKB1R b Kkq - 0 10 ; Best move: d8b6
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black knight at d7, black pawn at e7, black pawn at f7 and black pawn at h7. Black pawn at a6, white knight at b6, black pawn at c6, black pawn at d6 and black bishop at e6. Black pawn at g5. Black pawn at b4 and white knight at h4. White pawn at a3, white pawn at b3 and white pawn at d3. White rook at b2, white pawn at c2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside, black kingside and black queenside castles are available. Half move number is 0. Full move number is 10. Black to move.