b1r2bnr/p1p1kp1n/4p3/Qp1pP1p1/2PP1P2/N6p/PP2K2P/1RB3NR b - - 3 21
FEN state: b1r2bnr/p1p1kp1n/4p3/Qp1pP1p1/2PP1P2/N6p/PP2K2P/1RB3NR b - - 3 21 ; Best move: d5c4
The current state of the chess board is: Black bishop at a8, black rook at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black king at e7, black pawn at f7 and black knight at h7. Black pawn at e6. White queen at a5, black pawn at b5, black pawn at d5, white pawn at e5 and black pawn at g5. White pawn at c4, white pawn at d4 and white pawn at f4. White knight at a3 and black pawn at h3. White pawn at a2, white pawn at b2, white king at e2 and white pawn at h2. White rook at b1, white bishop at c1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 21. Black to move.