r5qr/pbp2pkp/1p1pp3/PB2Pn2/1n1R2p1/NP4N1/1bPP1PPP/2BQ1K1R b - - 3 20
FEN state: r5qr/pbp2pkp/1p1pp3/PB2Pn2/1n1R2p1/NP4N1/1bPP1PPP/2BQ1K1R b - - 3 20 ; Best move: b2d4
The current state of the chess board is: Black rook at a8, black queen at g8 and black rook at h8. Black pawn at a7, black bishop at b7, black pawn at c7, black pawn at f7, black king at g7 and black pawn at h7. Black pawn at b6, black pawn at d6 and black pawn at e6. White pawn at a5, white bishop at b5, white pawn at e5 and black knight at f5. Black knight at b4, white rook at d4 and black pawn at g4. White knight at a3, white pawn at b3 and white knight at g3. Black bishop at b2, white pawn at c2, white pawn at d2, white pawn at f2, white pawn at g2 and white pawn at h2. White bishop at c1, white queen at d1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 20. Black to move.