rn1q3r/1pp2p1k/4p1pp/p2p3P/bP1P2Q1/2KBB2R/1PP2PN1/RN6 b - - 1 21
FEN state: rn1q3r/1pp2p1k/4p1pp/p2p3P/bP1P2Q1/2KBB2R/1PP2PN1/RN6 b - - 1 21 ; Best move: a5b4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at f7 and black king at h7. Black pawn at e6, black pawn at g6 and black pawn at h6. Black pawn at a5, black pawn at d5 and white pawn at h5. Black bishop at a4, white pawn at b4, white pawn at d4 and white queen at g4. White king at c3, white bishop at d3, white bishop at e3 and white rook at h3. White pawn at b2, white pawn at c2, white pawn at f2 and white knight at g2. White rook at a1 and white knight at b1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.