rnb1k1r1/pp4p1/2p5/2Pp1pPp/q3p3/4bQR1/2RPPN1P/B3KB2 b - - 4 22
FEN state: rnb1k1r1/pp4p1/2p5/2Pp1pPp/q3p3/4bQR1/2RPPN1P/B3KB2 b - - 4 22 ; Best move: a4a1
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black rook at g8. Black pawn at a7, black pawn at b7 and black pawn at g7. Black pawn at c6. White pawn at c5, black pawn at d5, black pawn at f5, white pawn at g5 and black pawn at h5. Black queen at a4 and black pawn at e4. Black bishop at e3, white queen at f3 and white rook at g3. White rook at c2, white pawn at d2, white pawn at e2, white knight at f2 and white pawn at h2. White bishop at a1, white king at e1 and white bishop at f1. Both players have exhausted their castles. Half move number is 4. Full move number is 22. Black to move.