diff --git a/Day-4/day4-1.py b/Day-4/day4-1.py
new file mode 100644
index 0000000..3710507
--- /dev/null
+++ b/Day-4/day4-1.py
@@ -0,0 +1,78 @@
+#!/usr/bin/python3
+
+numbersDrawn = []
+boards = []
+
+# Function to check a given board for completed columns
+def checkColumns(board):
+    match = False
+    for i in range(0,len(board[0])):
+        for line in board:
+            if(line[i] == '*'):
+                match = True
+                continue
+            else:
+                match = False
+                break
+        if(match):
+            return True
+        else:
+            continue
+    return False
+
+# Function to check a given board for completed rows.
+def checkRows(board):
+    for line in board:
+        match = False
+        for num in line:
+            if(num == '*'):
+                match = True
+                continue
+            else:
+                match = False
+                break
+        if(match):
+            return True
+        else:
+            continue
+    return False
+
+# Open the file. Put the numbers to be drawn in one array and the boards in another.
+with open('/home/jake/Documents/AoC-2021/Day-4/input.txt', 'r') as inputFile:
+    numbersDrawn = inputFile.readline().split(',')
+    boardsFromFile = inputFile.readlines()[1:]
+    
+    currentBoard = []
+    for line in boardsFromFile:
+        currentLine = []
+
+        if(line == '\n'):
+            boards.append(currentBoard)
+            currentBoard = []
+            continue
+        
+        currentLine = line.split()
+        currentBoard.append(currentLine)
+    boards.append(currentBoard)
+
+# Mark off the numbers drawn on the boards.
+for i in range(0, len(numbersDrawn)):
+    for board in boards:
+        for line in board:
+            for num in range(len(line)):
+                if(line[num] == numbersDrawn[i]):
+                    line[num] = '*'
+
+        # Check for a winning board
+        if(checkRows(board) or checkColumns(board)):
+            print("Found winning board: " + str(board))
+            total = 0
+            for line in board:
+                for num in line:
+                    if(num != '*'):
+                        total = total+int(num)
+            score = total * int(numbersDrawn[i])
+            print("Total score of winning board is: " + str(score))
+            exit()
+        else:
+            continue
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