rnb3r1/1p1p4/q1pB1bkp/p2Npnp1/P2Pp2P/1P3PP1/2P1Q1NR/2R1KB2 b - - 0 20
FEN state: rnb3r1/1p1p4/q1pB1bkp/p2Npnp1/P2Pp2P/1P3PP1/2P1Q1NR/2R1KB2 b - - 0 20 ; Best move: a6e2
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at g8. Black pawn at b7 and black pawn at d7. Black queen at a6, black pawn at c6, white bishop at d6, black bishop at f6, black king at g6 and black pawn at h6. Black pawn at a5, white knight at d5, black pawn at e5, black knight at f5 and black pawn at g5. White pawn at a4, white pawn at d4, black pawn at e4 and white pawn at h4. White pawn at b3, white pawn at f3 and white pawn at g3. White pawn at c2, white queen at e2, white knight at g2 and white rook at h2. White rook at c1, white king at e1 and white bishop at f1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.