rn2k2r/3bq1b1/pp1ppppp/3P1n2/1P3PP1/7R/1BPQPN1P/1N2K2R b K - 3 21
FEN state: rn2k2r/3bq1b1/pp1ppppp/3P1n2/1P3PP1/7R/1BPQPN1P/1N2K2R b K - 3 21 ; Best move: e6e5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black rook at h8. Black bishop at d7, black queen at e7 and black bishop at g7. Black pawn at a6, black pawn at b6, black pawn at d6, black pawn at e6, black pawn at f6, black pawn at g6 and black pawn at h6. White pawn at d5 and black knight at f5. White pawn at b4, white pawn at f4 and white pawn at g4. White rook at h3. White bishop at b2, white pawn at c2, white queen at d2, white pawn at e2, white knight at f2 and white pawn at h2. White knight at b1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 3. Full move number is 21. Black to move.