rn3knr/2p1bp1p/4b3/pp2P1p1/PP1Pp1PN/7P/8/R2QK2R b KQ - 1 21
FEN state: rn3knr/2p1bp1p/4b3/pp2P1p1/PP1Pp1PN/7P/8/R2QK2R b KQ - 1 21 ; Best move: b8c6
The current state of the chess board is: Black rook at a8, black knight at b8, black king at f8, black knight at g8 and black rook at h8. Black pawn at c7, black bishop at e7, black pawn at f7 and black pawn at h7. Black bishop at e6. Black pawn at a5, black pawn at b5, white pawn at e5 and black pawn at g5. White pawn at a4, white pawn at b4, white pawn at d4, black pawn at e4, white pawn at g4 and white knight at h4. White pawn at h3. White rook at a1, white queen at d1, white king at e1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 1. Full move number is 21. Black to move.