diff --git a/.gitmodules b/.gitmodules
index 636993749864ac75e6561544ca117910aa3e1f3c..228ba88abec70a8fa42ab37f6d8846decec3e1a8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,6 @@
 [submodule "solvers/iskw"]
 	path = solvers/iskw
 	url = git@togawa-gitlab:adc2019/solver.git
+[submodule "solvers/nszw"]
+	path = solvers/nszw
+	url = git@togawa-gitlab:adc2019/nszw-solver.git
diff --git a/solvers/nszw b/solvers/nszw
new file mode 160000
index 0000000000000000000000000000000000000000..849bed357f03a753050aafbf429ed406bd354195
--- /dev/null
+++ b/solvers/nszw
@@ -0,0 +1 @@
+Subproject commit 849bed357f03a753050aafbf429ed406bd354195