diff --git a/patterns.c b/patterns.c
index cebd574..335cee8 100644
--- a/patterns.c
+++ b/patterns.c
@@ -10,11 +10,9 @@
 #include "obs.h"
 
 
-
 void
-pattern_copyleft(struct s_game *g) {
+pattern_copyleft_spec(struct s_game *g, int cleared_face) {
 	int times;
-	int cleared_face = rand() % g->polygon_type;
 	int max_dist = get_max_obs_dist(g);
 
 	for(times = 0; times < g->polygon_type; times++) {
@@ -26,6 +24,43 @@ pattern_copyleft(struct s_game *g) {
 	}
 }
 
+void
+pattern_copyleft(struct s_game *g) {
+	pattern_copyleft_spec(g, rand() % g->polygon_type);
+}
+
+void
+pattern_copy3left(struct s_game *g) {
+	pattern_copyleft_spec(g, 0);
+	pattern_copyleft_spec(g, g->polygon_type/2);
+	pattern_copyleft_spec(g, 0);
+}
+
+
+void
+pattern_opposing_forces(struct s_game *g) {
+	int times;
+	int max_dist = get_max_obs_dist(g);
+	int cleared_face = rand() % g->polygon_type;
+
+	for(times = 0; times < g->polygon_type; times+=2) {
+			struct s_obstacle o;
+			o = create_obstacle(SHAPE_THICK,
+			                    (times + cleared_face)%g->polygon_type,
+			                    1, max_dist + K_CLEARANCE);
+			add_obstacle(g, o);
+	}
+}
+
+void
+pattern_3opposing_forces(struct s_game *g) {
+	pattern_opposing_forces(g);
+	pattern_opposing_forces(g);
+	pattern_opposing_forces(g);
+}
+
+
+
 void
 pattern_schenille(struct s_game *g) {
 	int times;
@@ -52,9 +87,12 @@ pattern_schenille(struct s_game *g) {
 
 void
 add_pattern(struct s_game *g) {
-	int n_patterns = 2;
+	int n_patterns = 5;
 	void (*patterns[])(struct s_game *g) = {pattern_copyleft,
-	                                        pattern_schenille};
+	                                        pattern_schenille,
+	                                        pattern_copy3left,
+	                                        pattern_opposing_forces,
+	                                        pattern_3opposing_forces};
 
 	int choosen_pattern = rand() % n_patterns;