Nothing
peek_neighbors <- function(board, nbors, blanks, nrow, ncol) {
update_smiley(":0")
update_neighbors(board, " ", nbors, blanks, nrow, ncol, to_hide = TRUE)
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.