1n2kb1r/1p1bq2p/1rp1p1pn/pP6/P2PPBP1/5P2/Rp2K2P/1N3BNR b k - 0 20
FEN state: 1n2kb1r/1p1bq2p/1rp1p1pn/pP6/P2PPBP1/5P2/Rp2K2P/1N3BNR b k - 0 20 ; Best move: e7b4
The current state of the chess board is: Black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black bishop at d7, black queen at e7 and black pawn at h7. Black rook at b6, black pawn at c6, black pawn at e6, black pawn at g6 and black knight at h6. Black pawn at a5 and white pawn at b5. White pawn at a4, white pawn at d4, white pawn at e4, white bishop at f4 and white pawn at g4. White pawn at f3. White rook at a2, black pawn at b2, white king at e2 and white pawn at h2. White knight at b1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.