diff --git a/Makefile b/Makefile
index 7e046bb..74fa15a 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,11 @@ run:
 	ld.gold -s -static -o sudoku sudoku.o
 	cat ./example_sudoku.txt | ./sudoku
 
+test:
+	nasm -felf64 sudoku.asm
+	ld.gold -s -static -o sudoku sudoku.o
+	cat ./example_sudoku.txt | ./sudoku | grep -qPz "^483921657\n967345821\n251876493\n548132976\n729564138\n136798245\n372689514\n814253769\n695417382\n" && echo "Matches known result"
+
 build:
 	nasm -felf64 sudoku.asm
 	ld.gold -s -static -o sudoku sudoku.o