r1bq1kr1/pppp2pp/8/1n1p1p2/1R6/b1PPP1P1/5P2/RNBQ1KN1 w - - 0 19
FEN state: r1bq1kr1/pppp2pp/8/1n1p1p2/1R6/b1PPP1P1/5P2/RNBQ1KN1 w - - 0 19 ; Best move: b1a3
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at f8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black pawn at g7 and black pawn at h7. Black knight at b5, black pawn at d5 and black pawn at f5. White rook at b4. Black bishop at a3, white pawn at c3, white pawn at d3, white pawn at e3 and white pawn at g3. White pawn at f2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 19. White to move.