1nkq2nr/r2p1ppp/1p6/p2bp1P1/P1PPP3/b5RP/3K1P2/1NBQ1BNR w - - 1 21
FEN state: 1nkq2nr/r2p1ppp/1p6/p2bp1P1/P1PPP3/b5RP/3K1P2/1NBQ1BNR w - - 1 21 ; Best move: e4d5
The current state of the chess board is: Black knight at b8, black king at c8, black queen at d8, black knight at g8 and black rook at h8. Black rook at a7, black pawn at d7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at b6. Black pawn at a5, black bishop at d5, black pawn at e5 and white pawn at g5. White pawn at a4, white pawn at c4, white pawn at d4 and white pawn at e4. Black bishop at a3, white rook at g3 and white pawn at h3. White king at d2 and white pawn at f2. White knight at b1, white bishop at c1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. White to move.