diff --git a/states/loading.lua b/states/loading.lua
index ba2899e..a14384f 100644
--- a/states/loading.lua
+++ b/states/loading.lua
@@ -36,7 +36,10 @@ function state_loading()
       board:reset()
       repeat
         board:solve_step(true)
-        yield()
+        -- reduce the number of yields to speed up the process
+        if board_size == 10 and rnd(1) < .2 or true then
+          yield()
+        end
       until board:is_complete()
     until board:is_valid()