1nbk1bn1/1p4pr/r2Ppp2/2pP2Pp/p1P1q2P/5P2/P2QB1N1/RNB2K1R b - - 2 21
FEN state: 1nbk1bn1/1p4pr/r2Ppp2/2pP2Pp/p1P1q2P/5P2/P2QB1N1/RNB2K1R b - - 2 21 ; Best move: e4e5
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at d8, black bishop at f8 and black knight at g8. Black pawn at b7, black pawn at g7 and black rook at h7. Black rook at a6, white pawn at d6, black pawn at e6 and black pawn at f6. Black pawn at c5, white pawn at d5, white pawn at g5 and black pawn at h5. Black pawn at a4, white pawn at c4, black queen at e4 and white pawn at h4. White pawn at f3. White pawn at a2, white queen at d2, white bishop at e2 and white knight at g2. White rook at a1, white knight at b1, white bishop at c1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. Black to move.