r1b4r/pp1p1k2/n1R4p/5pp1/1Ppp4/3PP1P1/2PNQn1P/2B1KBR1 b - - 3 21
FEN state: r1b4r/pp1p1k2/n1R4p/5pp1/1Ppp4/3PP1P1/2PNQn1P/2B1KBR1 b - - 3 21 ; Best move: d7c6
The current state of the chess board is: Black rook at a8, black bishop at c8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7 and black king at f7. Black knight at a6, white rook at c6 and black pawn at h6. Black pawn at f5 and black pawn at g5. White pawn at b4, black pawn at c4 and black pawn at d4. White pawn at d3, white pawn at e3 and white pawn at g3. White pawn at c2, white knight at d2, white queen at e2, black knight at f2 and white pawn at h2. 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 3. Full move number is 21. Black to move.