rn3bnr/p1pk3p/Bp6/1P2pp2/P2pPPp1/R1PP2PP/8/1NBqK1NR w - - 0 21
FEN state: rn3bnr/p1pk3p/Bp6/1P2pp2/P2pPPp1/R1PP2PP/8/1NBqK1NR w - - 0 21 ; Best move: e1d1
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black king at d7 and black pawn at h7. White bishop at a6 and black pawn at b6. White pawn at b5, black pawn at e5 and black pawn at f5. White pawn at a4, black pawn at d4, white pawn at e4, white pawn at f4 and black pawn at g4. White rook at a3, white pawn at c3, white pawn at d3, white pawn at g3 and white pawn at h3. White knight at b1, white bishop at c1, black queen at d1, white king at e1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.