r2knb1r/p4N1p/b1n1q1p1/1N2Pp2/2pp3P/2P1P3/PP1P2P1/1RB1KBR1 b - - 4 20
FEN state: r2knb1r/p4N1p/b1n1q1p1/1N2Pp2/2pp3P/2P1P3/PP1P2P1/1RB1KBR1 b - - 4 20 ; Best move: e6f7
The current state of the chess board is: Black rook at a8, black king at d8, black knight at e8, black bishop at f8 and black rook at h8. Black pawn at a7, white knight at f7 and black pawn at h7. Black bishop at a6, black knight at c6, black queen at e6 and black pawn at g6. White knight at b5, white pawn at e5 and black pawn at f5. Black pawn at c4, black pawn at d4 and white pawn at h4. White pawn at c3 and white pawn at e3. White pawn at a2, white pawn at b2, white pawn at d2 and white pawn at g2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 20. Black to move.