diff --git a/tests/test_board.py b/tests/test_board.py
index 83839a3..9f11c4c 100644
--- a/tests/test_board.py
+++ b/tests/test_board.py
@@ -2,6 +2,7 @@ import pytest
 
 from katrain.core.game import Game, IllegalMoveException, Move
 from katrain.core.base_katrain import KaTrainBase, OUTPUT_INFO
+from katrain.core.game_node import GameNode
 
 
 class MockKaTrain(KaTrainBase):
@@ -17,12 +18,17 @@ class MockEngine:
         pass
 
 
+@pytest.fixture
+def new_game():
+    return GameNode(properties={"SZ": 19})
+
+
 class TestBoard:
     def nonempty_chains(self, b):
         return [c for c in b.chains if c]
 
-    def test_merge(self):
-        b = Game(MockKaTrain(), MockEngine())
+    def test_merge(self, new_game):
+        b = Game(MockKaTrain(), MockEngine(), move_tree=new_game)
         b.play(Move.from_gtp("B9", player="B"))
         b.play(Move.from_gtp("A3", player="B"))
         b.play(Move.from_gtp("A9", player="B"))
@@ -30,8 +36,8 @@ class TestBoard:
         assert 3 == len(b.stones)
         assert 0 == len(b.prisoners)
 
-    def test_collide(self):
-        b = Game(MockKaTrain(), MockEngine())
+    def test_collide(self, new_game):
+        b = Game(MockKaTrain(), MockEngine(), move_tree=new_game)
         b.play(Move.from_gtp("B9", player="B"))
         with pytest.raises(IllegalMoveException):
             b.play(Move.from_gtp("B9", player="W"))
@@ -39,8 +45,8 @@ class TestBoard:
         assert 1 == len(b.stones)
         assert 0 == len(b.prisoners)
 
-    def test_capture(self):
-        b = Game(MockKaTrain(), MockEngine())
+    def test_capture(self, new_game):
+        b = Game(MockKaTrain(), MockEngine(), move_tree=new_game)
         b.play(Move.from_gtp("A2", player="B"))
         b.play(Move.from_gtp("B1", player="W"))
         b.play(Move.from_gtp("A1", player="W"))
@@ -60,8 +66,8 @@ class TestBoard:
         assert 4 == len(b.stones)
         assert 2 == len(b.prisoners)
 
-    def test_snapback(self):
-        b = Game(MockKaTrain(), MockEngine())
+    def test_snapback(self, new_game):
+        b = Game(MockKaTrain(), MockEngine(), move_tree=new_game)
         for move in ["C1", "D1", "E1", "C2", "D3", "E4", "F2", "F3", "F4"]:
             b.play(Move.from_gtp(move, player="B"))
         for move in ["D2", "E2", "C3", "D4", "C4"]:
@@ -78,8 +84,8 @@ class TestBoard:
         assert 12 == len(b.stones)
         assert 4 == len(b.prisoners)
 
-    def test_ko(self):
-        b = Game(MockKaTrain(), MockEngine())
+    def test_ko(self, new_game):
+        b = Game(MockKaTrain(), MockEngine(), move_tree=new_game)
         for move in ["A2", "B1"]:
             b.play(Move.from_gtp(move, player="B"))