r1bq1b1r/pp2k2p/B2p2p1/3npP2/n3PP2/4pN2/2PK3P/1NB2R2 w - - 0 20
FEN state: r1bq1b1r/pp2k2p/B2p2p1/3npP2/n3PP2/4pN2/2PK3P/1NB2R2 w - - 0 20 ; Best move: d2e1
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black king at e7 and black pawn at h7. White bishop at a6, black pawn at d6 and black pawn at g6. Black knight at d5, black pawn at e5 and white pawn at f5. Black knight at a4, white pawn at e4 and white pawn at f4. Black pawn at e3 and white knight at f3. White pawn at c2, white king at d2 and white pawn at h2. White knight at b1, white bishop at c1 and white rook at f1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.