diff --git a/board_01.jpg b/board_01.jpg
new file mode 100644
index 0000000..9360183
Binary files /dev/null and b/board_01.jpg differ
diff --git a/board_02.jpg b/board_02.jpg
new file mode 100644
index 0000000..7c86635
Binary files /dev/null and b/board_02.jpg differ
diff --git a/invalid.png b/invalid.png
new file mode 100644
index 0000000..5453aff
Binary files /dev/null and b/invalid.png differ
diff --git a/valid.png b/valid.png
new file mode 100644
index 0000000..c691dbe
Binary files /dev/null and b/valid.png differ