diff --git a/graph.cpp b/graph.cpp
index 6c0e0e43..ad4dfe24 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -2395,8 +2395,10 @@ int countMinesAround(cell *c) {
   }
 
 transmatrix applyPatterndir(cell *c, const patterns::patterninfo& si) {
+  if(gp::on || irr::on || binarytiling) return Id;
   transmatrix V = ddspin(c, si.dir, S42);  
-  if(si.reflect) return V * Mirror;  
+  if(si.reflect) return V * Mirror;
+  if(syntetic) return V * iddspin(c, 0, S42);
   return V;
   }
 
diff --git a/pattern2.cpp b/pattern2.cpp
index 57d4daf1..a6eb593c 100644
--- a/pattern2.cpp
+++ b/pattern2.cpp
@@ -873,17 +873,12 @@ namespace patterns {
     si.dir = 0; si.reflect = false; si.id = ctof(c);
     si.symmetries = c->type;
     
-    if(syntetic) {
-      si.id = synt::id_of(c->master);
-      return si;
-      }
-
     if(binarytiling) {
       if(pat == PAT_SINGLETYPE) si.id = 0;
       si.dir = 2;
       return si;
       }
-
+    
     if(pat == PAT_SINGLETYPE) {
       si.id = 0; si.symmetries = 1;
       if(sub & SPF_TWOCOL) si.id = c->type & 1;
@@ -891,6 +886,17 @@ namespace patterns {
       return si;
       }
     
+    if(syntetic && pat == PAT_SIBLING) {
+      int id = synt::id_of(c->master);
+      si.id = synt::tilegroup[id];
+      si.symmetries = synt::periods[si.id];
+      si.dir = synt::groupoffset[id];
+      if((sub & SPF_EXTRASYM) && synt::have_symmetry && synt::tilegroup[id^1] < synt::tilegroup[id])
+        si.id = synt::tilegroup[id^1],
+        si.reflect = true;
+      return si;
+      }
+
     if(pat == PAT_ZEBRA && stdhyperbolic) {
 
       si.id = zebra40(c); // 4 to 43
@@ -1468,7 +1474,7 @@ namespace patterns {
     if(stdhyperbolic || euclid)
       dialog::addBoolItem(XLAT("Palace Pattern"), (whichPattern == PAT_PALACE), PAT_PALACE);
     
-    if(nonbitrunc && S3 == 4)
+    if((nonbitrunc && S3 == 4) || (syntetic && synt::support_chessboard()))
       dialog::addBoolItem(XLAT("chessboard"), (whichPattern == PAT_CHESS), PAT_CHESS);
 
     if(a38 || a46 || euclid || S3 == 4 || S7 == 4)
@@ -1476,6 +1482,9 @@ namespace patterns {
     
     if(sphere)
       dialog::addBoolItem(XLAT("siblings"), (whichPattern == PAT_SIBLING), PAT_SIBLING);
+    
+    if(syntetic)
+      dialog::addBoolItem(XLAT("Archimedean"), (whichPattern == PAT_SIBLING), PAT_SIBLING);
 
     if(euclid)
       dialog::addBoolItem(XLAT("torus pattern"), (whichPattern == PAT_FIELD), PAT_FIELD);
@@ -1520,7 +1529,10 @@ namespace patterns {
       dialog::addBoolItem(XLAT("symmetry 0-2"), subpattern_flags & SPF_SYM02, '2');
       dialog::addBoolItem(XLAT("symmetry 0-3"), subpattern_flags & SPF_SYM03, '3');
       }
-    if(euclid && among(whichPattern, PAT_COLORING, 0))
+    if(euclid && among(whichPattern, PAT_COLORING, 0) && !syntetic)
+      dialog::addBoolItem(XLAT("extra symmetries"), subpattern_flags & SPF_EXTRASYM, '=');
+    
+    if(syntetic && synt::have_symmetry && whichPattern == PAT_SIBLING)
       dialog::addBoolItem(XLAT("extra symmetries"), subpattern_flags & SPF_EXTRASYM, '=');
 
     if(whichPattern == PAT_SINGLETYPE) {
diff --git a/syntetic.cpp b/syntetic.cpp
index f909c1cf..53d9d9dd 100644
--- a/syntetic.cpp
+++ b/syntetic.cpp
@@ -4,14 +4,14 @@ namespace synt {
 
 #define SDEBUG(x) if(debug_geometry) { doindent(); x; fflush(stdout); }
 
+static const int sfPH = 1;
+static const int sfLINE = 2;
+
 // Marek-snub
 vector<int> faces = {3, 6, 6, 6};
 vector<int> adj = {1, 0, 2, 3};
 vector<bool> invert = {false, false, true, false};
-vector<int> nflags;
-
-static const int sfPH = 1;
-static const int sfLINE = 2;
+vector<int> nflags = {sfPH | sfLINE, 0, 0, 0};
 
 bool have_ph, have_line, have_symmetry;
 
@@ -559,6 +559,10 @@ int support_graveyard() {
     0;
   }
 
+bool support_chessboard() {
+  return 0;
+  }
+
 bool pseudohept(int id) {
   return flags[id] & synt::sfPH;
   }
diff --git a/textures.cpp b/textures.cpp
index f2d8b760..029c117e 100644
--- a/textures.cpp
+++ b/textures.cpp
@@ -266,10 +266,8 @@ int celltriangles(cell *c) {
   return c->type;
   }
 
-#define no_patterndir (gp::on || irr::on || binarytiling)
-
 array<hyperpoint, 3> findTextureTriangle(cell *c, patterns::patterninfo& si, int i) {
-  transmatrix M = no_patterndir ? ggmatrix(c) : ggmatrix(c) * applyPatterndir(c, si);
+  transmatrix M = ggmatrix(c) * applyPatterndir(c, si);
   return make_array(M * C0, M * get_corner_position(c, i), M * get_corner_position(c, i+1));
   }
 
@@ -299,7 +297,7 @@ void mapTexture(cell *c, textureinfo& mi, patterns::patterninfo &si, const trans
   mi.symmetries = si.symmetries;
   mi.current_type = celltriangles(c);
   
-  mi.M = no_patterndir ? T : T * applyPatterndir(c, si);
+  mi.M = T * applyPatterndir(c, si);
   mi.triangles.clear();
   
   for(int i=0; i<c->type; i++) {
@@ -351,7 +349,7 @@ bool texture_config::apply(cell *c, const transmatrix &V, int col) {
     
     set_floor(shFullFloor);
     qfi.tinf = &mi;
-    qfi.spin = no_patterndir ? Id : applyPatterndir(c, si);
+    qfi.spin = applyPatterndir(c, si);
 
     if(grid_color) {
       draw_floorshape(c, V, shFullFloor, 0, PPR_FLOOR);