1nb3nr/1p5p/2kqrp1b/3p2p1/P1Pp2P1/5P1P/P1Q1P1N1/1RB1KBR1 w - - 1 21
FEN state: 1nb3nr/1p5p/2kqrp1b/3p2p1/P1Pp2P1/5P1P/P1Q1P1N1/1RB1KBR1 w - - 1 21 ; Best move: c4d5
The current state of the chess board is: Black knight at b8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at b7 and black pawn at h7. Black king at c6, black queen at d6, black rook at e6, black pawn at f6 and black bishop at h6. Black pawn at d5 and black pawn at g5. White pawn at a4, white pawn at c4, black pawn at d4 and white pawn at g4. White pawn at f3 and white pawn at h3. White pawn at a2, white queen at c2, white pawn at e2 and white knight at g2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. White to move.