r3k1n1/1np1qpb1/p3P1pp/3p2NQ/R7/4P1P1/2PN1P1P/1nB1KB1R w q - 5 22
FEN state: r3k1n1/1np1qpb1/p3P1pp/3p2NQ/R7/4P1P1/2PN1P1P/1nB1KB1R w q - 5 22 ; Best move: f1b5
The current state of the chess board is: Black rook at a8, black king at e8 and black knight at g8. Black knight at b7, black pawn at c7, black queen at e7, black pawn at f7 and black bishop at g7. Black pawn at a6, white pawn at e6, black pawn at g6 and black pawn at h6. Black pawn at d5, white knight at g5 and white queen at h5. White rook at a4. White pawn at e3 and white pawn at g3. White pawn at c2, white knight at d2, white pawn at f2 and white pawn at h2. Black knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 5. Full move number is 22. White to move.