r1b1k1r1/p1p2p2/n3pP1b/2q2npP/1ppP4/PPB4P/R2NP3/1N1Q1BKR w - - 1 21
FEN state: r1b1k1r1/p1p2p2/n3pP1b/2q2npP/1ppP4/PPB4P/R2NP3/1N1Q1BKR w - - 1 21 ; Best move: d4c5
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at g8. Black pawn at a7, black pawn at c7 and black pawn at f7. Black knight at a6, black pawn at e6, white pawn at f6 and black bishop at h6. Black queen at c5, black knight at f5, black pawn at g5 and white pawn at h5. Black pawn at b4, black pawn at c4 and white pawn at d4. White pawn at a3, white pawn at b3, white bishop at c3 and white pawn at h3. White rook at a2, white knight at d2 and white pawn at e2. White knight at b1, 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 1. Full move number is 21. White to move.