rq6/2pkbn2/p1np2pr/4ppP1/pP1P1P1B/P2bK2P/2P1P1B1/R2Q2NR b - - 0 21
FEN state: rq6/2pkbn2/p1np2pr/4ppP1/pP1P1P1B/P2bK2P/2P1P1B1/R2Q2NR b - - 0 21 ; Best move: d3e4
The current state of the chess board is: Black rook at a8 and black queen at b8. Black pawn at c7, black king at d7, black bishop at e7 and black knight at f7. Black pawn at a6, black knight at c6, black pawn at d6, black pawn at g6 and black rook at h6. Black pawn at e5, black pawn at f5 and white pawn at g5. Black pawn at a4, white pawn at b4, white pawn at d4, white pawn at f4 and white bishop at h4. White pawn at a3, black bishop at d3, white king at e3 and white pawn at h3. White pawn at c2, white pawn at e2 and white bishop at g2. White rook at a1, white queen at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.