diff --git a/src/research.h b/src/research.h
deleted file mode 100644
index a877904..0000000
--- a/src/research.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/********************
- * tile colours	    *
- * empty	= 0 *
- * green	= 1 *
- * purple	= 2 *
- * yellow	= 3 *
- * orange	= 4 *
- * cyan		= 5 *
- * pink		= 6 *
- * ******************/
- 
-#define DEBUG 1
-int i, j, k, x, y, z;
-int counter = 0;
-int grid [2][18][8]= {
-	{
-		{0, 1, 0, 0, 0, 0, 0, 0},		// colours
-		{0, 1, 1, 4, 5, 6, 7, 8},
-		{0, 1, 1, 1, 5, 6, 7, 8},
-		{0, 2, 1, 1, 5, 6, 7, 8},
-		{0, 5, 5, 1, 1, 5, 5, 5},
-		{0, 2, 1, 4, 1, 1, 7, 8},
-		{1, 1, 3, 4, 5, 1, 1, 8},
-		{1, 2, 3, 4, 5, 6, 1, 1},
-		{1, 1, 5, 4, 5, 6, 7, 1},
-		{1, 1, 1, 5, 5, 5, 7, 8},
-		{1, 1, 1, 1, 5, 5, 7, 1},
-		{1, 1, 1, 1, 1, 5, 1, 8},
-		{5, 5, 1, 1, 1, 1, 5, 5},
-		{1, 2, 3, 1, 1, 1, 1, 8},
-		{1, 2, 3, 1, 1, 1, 1, 1},
-		{1, 2, 1, 4, 5, 1, 1, 1},
-		{1, 1, 3, 4, 5, 6, 1, 1},
-		{1, 1, 1, 1, 1, 1, 1, 1},
-	},
-	{
-		{0, 0, 0, 0, 0, 0, 0, 0},		// matches
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-		{0, 0, 0, 0, 0, 0, 0, 0},
-	}
-};