rnb3nr/1p1pk1b1/2p2p1p/p2Np1p1/PP2P2P/2NP4/2PQBqP1/2RK3R b - - 1 21
FEN state: rnb3nr/1p1pk1b1/2p2p1p/p2Np1p1/PP2P2P/2NP4/2PQBqP1/2RK3R b - - 1 21 ; Best move: e7d8
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at d7, black king at e7 and black bishop at g7. Black pawn at c6, black pawn at f6 and black pawn at h6. Black pawn at a5, white knight at d5, black pawn at e5 and black pawn at g5. White pawn at a4, white pawn at b4, white pawn at e4 and white pawn at h4. White knight at c3 and white pawn at d3. White pawn at c2, white queen at d2, white bishop at e2, black queen at f2 and white pawn at g2. White rook at c1, white king at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.