r1bqkb1r/3p1p1p/np6/p5p1/PPp1pPP1/3PP2R/2PB4/RN1NK3 b kq - 0 20
FEN state: r1bqkb1r/3p1p1p/np6/p5p1/PPp1pPP1/3PP2R/2PB4/RN1NK3 b kq - 0 20 ; Best move: d7d5
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, black pawn at f7 and black pawn at h7. Black knight at a6 and black pawn at b6. Black pawn at a5 and black pawn at g5. White pawn at a4, white pawn at b4, black pawn at c4, black pawn at e4, white pawn at f4 and white pawn at g4. White pawn at d3, white pawn at e3 and white rook at h3. White pawn at c2 and white bishop at d2. White rook at a1, white knight at b1, white knight at d1 and white king at e1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 20. Black to move.