diff --git a/src/games/chessbase/4board-thumb.png b/src/games/chessbase/4board-thumb.png
new file mode 100644
index 0000000..264c631
Binary files /dev/null and b/src/games/chessbase/4board-thumb.png differ
diff --git a/src/games/chessbase/armychess-thumb.png b/src/games/chessbase/armychess-thumb.png
new file mode 100644
index 0000000..ad8c7c8
Binary files /dev/null and b/src/games/chessbase/armychess-thumb.png differ
diff --git a/src/games/chessbase/leychessalpha-thumb.png b/src/games/chessbase/leychessalpha-thumb.png
new file mode 100644
index 0000000..70e05d2
Binary files /dev/null and b/src/games/chessbase/leychessalpha-thumb.png differ