r1bqkb1r/3p2p1/1pp1p3/p4p1p/P1PPNN2/4P1P1/QP1n1KR1/1RB2B2 b - - 0 20
FEN state: r1bqkb1r/3p2p1/1pp1p3/p4p1p/P1PPNN2/4P1P1/QP1n1KR1/1RB2B2 b - - 0 20 ; Best move: d2e4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at d7 and black pawn at g7. Black pawn at b6, black pawn at c6 and black pawn at e6. Black pawn at a5, black pawn at f5 and black pawn at h5. White pawn at a4, white pawn at c4, white pawn at d4, white knight at e4 and white knight at f4. White pawn at e3 and white pawn at g3. White queen at a2, white pawn at b2, black knight at d2, white king at f2 and white rook at g2. White rook at b1, white bishop at c1 and white bishop at f1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.