rnb1q1r1/pppp2kp/4Bp2/1N2b1pn/7P/1PPKP1P1/P2P1P2/R1BQ3R b - - 3 21
FEN state: rnb1q1r1/pppp2kp/4Bp2/1N2b1pn/7P/1PPKP1P1/P2P1P2/R1BQ3R b - - 3 21 ; Best move: d7e6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at e8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black king at g7 and black pawn at h7. White bishop at e6 and black pawn at f6. White knight at b5, black bishop at e5, black pawn at g5 and black knight at h5. White pawn at h4. White pawn at b3, white pawn at c3, white king at d3, white pawn at e3 and white pawn at g3. White pawn at a2, white pawn at d2 and white pawn at f2. White rook at a1, white bishop at c1, white queen at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 21. Black to move.