rB2kqnr/p5b1/4N3/4ppp1/1nP2Pb1/2P4p/1P2P2P/1NBQ1BKR w - - 0 21
FEN state: rB2kqnr/p5b1/4N3/4ppp1/1nP2Pb1/2P4p/1P2P2P/1NBQ1BKR w - - 0 21 ; Best move: d1a4
The current state of the chess board is: Black rook at a8, white bishop at b8, black king at e8, black queen at f8, black knight at g8 and black rook at h8. Black pawn at a7 and black bishop at g7. White knight at e6. Black pawn at e5, black pawn at f5 and black pawn at g5. Black knight at b4, white pawn at c4, white pawn at f4 and black bishop at g4. White pawn at c3 and black pawn at h3. White pawn at b2, white pawn at e2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at d1, white bishop at f1, white king 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.