1nb2b1r/1p1k3p/5ppn/r1p3P1/p1Pq1P2/P2PP2P/1P3N2/R1BK1BNR b - - 2 21
FEN state: 1nb2b1r/1p1k3p/5ppn/r1p3P1/p1Pq1P2/P2PP2P/1P3N2/R1BK1BNR b - - 2 21 ; Best move: d4d6
The current state of the chess board is: Black knight at b8, black bishop at c8, black bishop at f8 and black rook at h8. Black pawn at b7, black king at d7 and black pawn at h7. Black pawn at f6, black pawn at g6 and black knight at h6. Black rook at a5, black pawn at c5 and white pawn at g5. Black pawn at a4, white pawn at c4, black queen at d4 and white pawn at f4. White pawn at a3, white pawn at d3, white pawn at e3 and white pawn at h3. White pawn at b2 and white knight at f2. White rook at a1, white bishop at c1, white king at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. Black to move.