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-rw-r--r--prolog/problems/trees/deletebt_3/common.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/prolog/problems/trees/deletebt_3/common.py b/prolog/problems/trees/deletebt_3/common.py
index 98ad95f..52f9e3f 100644
--- a/prolog/problems/trees/deletebt_3/common.py
+++ b/prolog/problems/trees/deletebt_3/common.py
@@ -2,7 +2,7 @@
id = 137
number = 47
-visible = True
+visible = False
facts = None
solution = '''\