diff --git "a/alstjr7437/BFS/\354\210\250\353\260\224\352\274\255\354\247\210.py" "b/alstjr7437/BFS/\354\210\250\353\260\224\352\274\255\354\247\210.py"
new file mode 100644
index 0000000..706325e
--- /dev/null
+++ "b/alstjr7437/BFS/\354\210\250\353\260\224\352\274\255\354\247\210.py"
@@ -0,0 +1,28 @@
+from collections import deque
+
+n, k = map(int, input().split())
+
+result = [0] * 100001
+result[n] = 1
+
+queue = deque()
+queue.append(n)
+
+while queue:
+    now = queue.popleft()
+    if now == k:
+        break
+    # -1 로직
+    if now - 1 >= 0 and result[now-1] == 0 :
+        queue.append(now-1)
+        result[now-1] = result[now] + 1
+    # +1 로직
+    if now + 1 < len(result) and result[now+1] == 0:
+        queue.append(now+1)
+        result[now+1] = result[now] + 1
+    # *2 로직
+    if now * 2 < len(result) and result[now * 2] == 0:
+        queue.append(now*2)
+        result[now*2] = result[now] + 1
+
+print(result[k] - 1)
\ No newline at end of file
diff --git a/alstjr7437/README.md b/alstjr7437/README.md
index bff4515..edb08f4 100644
--- a/alstjr7437/README.md
+++ b/alstjr7437/README.md
@@ -20,4 +20,5 @@
 | 16차시 | 2024.03.13 |  정렬  | <a href="https://www.acmicpc.net/problem/2170">선 긋기</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/57 |
 | 17차시 | 2024.03.16 |  DP  | <a href="https://www.acmicpc.net/problem/2228">구간 나누기</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/61 |
 | 18차시 | 2024.03.23 |  다익스트라  | <a href="https://www.acmicpc.net/problem/1753">최단 경로</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/66 |
-| 19차시 | 2024.03.27 |  문자열  | <a href="https://www.acmicpc.net/problem/5525">IOIOI</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/67 |
\ No newline at end of file
+| 19차시 | 2024.03.27 |  문자열  | <a href="https://www.acmicpc.net/problem/5525">IOIOI</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/67 |
+| 20차시 | 2024.04.03 |  BFS  | <a href="https://www.acmicpc.net/problem/1697">숨바꼭질</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/70 |
\ No newline at end of file