diff --git a/asonov.cpp b/asonov.cpp
index 69df2dab..6b27450b 100644
--- a/asonov.cpp
+++ b/asonov.cpp
@@ -13,20 +13,24 @@
 
 namespace hr {
 
+EX namespace asonov {
+
+#if !CAP_SOLV
 #if HDR
-int zgmod(int a, int b);
+inline bool in() { return false; }
+#endif
 #endif
 
-EX namespace asonov {
+EX int period_xy = 8;
+EX int period_z = 8;
+
+#if CAP_SOLV
 
 EX bool in() { return cgflags & qCAT; }
 
 EX hyperpoint tx, ty, tz;
 EX transmatrix straighten;
 
-EX int period_xy = 8;
-EX int period_z = 8;
-
 #if HDR
 struct coord: public array<int,3> {
   coord() {}
@@ -259,5 +263,7 @@ EX void show_config() {
   dialog::display();
   }
 
+#endif
+
 }
 }
diff --git a/binary-tiling.cpp b/binary-tiling.cpp
index 2f585bd5..1a570175 100644
--- a/binary-tiling.cpp
+++ b/binary-tiling.cpp
@@ -656,6 +656,7 @@ EX namespace bt {
     ld z3 = -log(3) / 2;
     ld bwhn = vid.binary_width / 2;
     ld bwh = vid.binary_width * z2;
+    ignore(bwh); ignore(bwhn);
     ld r2 = sqrt(2);
     const ld hs = hororec_scale;
     auto &x = h[0], &y = h[1], &z = h[2];
@@ -664,12 +665,14 @@ EX namespace bt {
         return bt::parabolic(y/2) * xpush(x*z2);
       case gTernary:
         return bt::parabolic(y/2) * xpush(x*z3);
+      #if CAP_SOLV
       case gSol:
         return xpush(bwh*x) * ypush(bwh*y) * zpush(z2*z);
       case gSolN: case gNIH:
         return xpush(bwhn*x) * ypush(bwhn*y) * zpush(-z*.5);
       case gArnoldCat:
         return rgpushxto0(asonov::tx*x/2 + asonov::ty*y/2 + asonov::tz*z/2);
+      #endif
       case gNil:
         return rgpushxto0(point31(x/2, y/2, z/2));
       case gEuclidSquare:
diff --git a/cell.cpp b/cell.cpp
index a1da6f8c..a7ad5244 100644
--- a/cell.cpp
+++ b/cell.cpp
@@ -296,7 +296,9 @@ EX void initcells() {
   
   hrmap* res = callhandlers((hrmap*)nullptr, hooks_newmap);
   if(res) currentmap = res;
+  #if CAP_SOLV
   else if(asonov::in()) currentmap = asonov::new_map();
+  #endif
   else if(nonisotropic || hybri) currentmap = nisot::new_map();
   else if(INVERSE) currentmap = gp::new_inverse();
   else if(fake::in()) currentmap = fake::new_map();
@@ -1086,11 +1088,13 @@ EX cell *random_in_distance(cell *c, int d) {
 
 EX int bounded_celldistance(cell *c1, cell *c2) {
   int limit = 6000;
+  #if CAP_SOLV
   if(asonov::in()) { 
     c2 = asonov::get_at(asonov::get_coord(c2->master) - asonov::get_coord(c1->master))->c7;
     c1 = currentmap->gamestart(); 
     limit = 100000000;
     }
+  #endif
 
   if(saved_distances.count(make_pair(c1,c2)))
     return saved_distances[make_pair(c1,c2)];
diff --git a/crystal.cpp b/crystal.cpp
index 2ceb4f60..b74cb466 100644
--- a/crystal.cpp
+++ b/crystal.cpp
@@ -1160,6 +1160,7 @@ EX void flip_z() {
   }
 
 #if CAP_RUG
+#if MAXMDIM >= 4
 hyperpoint coord_to_flat(ldcoord co, int dim = 3) {
   auto& cs = crystal_map()->cs;
   hyperpoint res = Hypc;
@@ -1169,6 +1170,7 @@ hyperpoint coord_to_flat(ldcoord co, int dim = 3) {
       res[b] += crug_rotation[b][a] * co[a] * rug::modelscale;
   return res;
   }
+#endif
 
 EX void switch_z_coordinate() {
   auto& cs = crystal_map()->cs;
@@ -1234,6 +1236,7 @@ void cut_triangle(const hyperpoint pa, const hyperpoint pb, const hyperpoint pc,
     cut_triangle2(pb, pc, pa, hb, hc, ha);
   }
 
+#if MAXMDIM >= 4
 EX void build_rugdata() {
   using namespace rug;
   rug::clear_model(); 
@@ -1293,6 +1296,7 @@ EX void build_rugdata() {
   println(hlog, "cut ", cut_level, "r ", crug_rotation);
   }
 #endif
+#endif
 
 EX void set_land(cell *c) {
   setland(c, specialland); 
diff --git a/drawing.cpp b/drawing.cpp
index 8c3042b6..8042e5e1 100644
--- a/drawing.cpp
+++ b/drawing.cpp
@@ -469,7 +469,9 @@ void addpoly(const shiftmatrix& V, const vector<glvertex> &tab, int ofs, int cnt
   if(pmodel == mdPixel) {
     for(int i=ofs; i<ofs+cnt; i++) {
       hyperpoint h = glhr::gltopoint(tab[i]);
+      #if MAXMDIM >= 4
       h[3] = 1;
+      #endif
       h = V.T * h;
       add1(h);
       }
diff --git a/euclid.cpp b/euclid.cpp
index 4e37cb39..9c67057a 100644
--- a/euclid.cpp
+++ b/euclid.cpp
@@ -735,6 +735,7 @@ EX namespace euc {
         return;
         }
       }
+    #if MAXMDIM >= 4
     if(twisted & 16) {
       int period = T0[2][2];
       transmatrix RotYZX = Zero;
@@ -767,7 +768,9 @@ EX namespace euc {
         }
       return;
       }
+    #endif
     if(WDIM == 3) {
+      #if MAXMDIM >= 4
       auto& coo = x;
       while(coo[2] >= T0[2][2]) {
         coo[2] -= T0[2][2];
@@ -784,6 +787,7 @@ EX namespace euc {
       for(int i: {0,1})
         if(T0[i][i]) coo[i] = gmod(coo[i], T0[i][i]);
       return;
+      #endif
       }
     else {
       gp::loc coo = to_loc(x);
diff --git a/fieldpattern.cpp b/fieldpattern.cpp
index 92cdd6d7..7ada96d2 100644
--- a/fieldpattern.cpp
+++ b/fieldpattern.cpp
@@ -1428,12 +1428,14 @@ discovery::~discovery() { schedule_destruction(); if(discoverer) discoverer->joi
 
 int hk = 
 #if CAP_THREAD
+#if MAXMDIM >= 4
   + addHook(hooks_on_geometry_change, 100, [] { for(auto& d:discoveries) if(!d.second.is_suspended) d.second.suspend(); })
   + addHook(hooks_final_cleanup, 100, [] { 
       for(auto& d:discoveries) { d.second.schedule_destruction(); if(d.second.is_suspended) d.second.activate(); }
       discoveries.clear();
       })
 #endif
+#endif
 #if CAP_COMMANDLINE
   + addHook(hooks_args, 0, [] {
       using namespace arg;
diff --git a/geom-exp.cpp b/geom-exp.cpp
index bce580d5..5400d857 100644
--- a/geom-exp.cpp
+++ b/geom-exp.cpp
@@ -594,10 +594,12 @@ EX void select_quotient() {
     nilv::prepare_niltorus3(),  
     pushScreen(nilv::show_niltorus3);
     }
+  #if CAP_SOLV
   else if(asonov::in()) {
     asonov::prepare_config();
     pushScreen(asonov::show_config);
     }
+  #endif
   else if(prod)
     pushScreen(product::show_config);
   else if(rotspace)
@@ -668,7 +670,9 @@ EX void menuitem_binary_width(char key) {
       #if CAP_TEXTURE
       texture::config.remap();
       #endif
+      #if CAP_SOLV
       if(asonov::in()) asonov::prepare();
+      #endif
       };
     });
   }
@@ -963,6 +967,7 @@ EX void showEuclideanMenu() {
       });
     }
   
+  #if MAXMDIM >= 4
   if(hybri) {
     auto r = rots::underlying_scale;
     dialog::addSelItem(XLAT("view the underlying geometry"), r > 0 ? fts(r)+"x" : ONOFF(false), '6');
@@ -981,6 +986,7 @@ EX void showEuclideanMenu() {
       dialog::extra_options = [] () { rots::draw_underlying(true); };
       });
     }
+  #endif
   
   if(stretch::applicable()) {
     dialog::addSelItem(XLAT("stretched geometry"), fts(stretch::factor), 'S');
diff --git a/geometry.cpp b/geometry.cpp
index 1dc62217..5f74423d 100644
--- a/geometry.cpp
+++ b/geometry.cpp
@@ -704,10 +704,12 @@ void geometry_information::prepare_basics() {
   if(hyperbolic && &currfp != &fieldpattern::fp_invalid)
     currfp.analyze(); 
   
+  #if CAP_SOLV  
   if(asonov::in()) {
     asonov::prepare();    
     asonov::prepare_walls();
     }
+  #endif
   }
 
 EX transmatrix xspinpush(ld dir, ld dist) {
diff --git a/geometry2.cpp b/geometry2.cpp
index 5e7140da..0fab3161 100644
--- a/geometry2.cpp
+++ b/geometry2.cpp
@@ -217,11 +217,15 @@ struct horo_distance {
 #endif
 
 void horo_distance::become(hyperpoint h1) {
+  #if CAP_SOLV
   if(sn::in()) {
     a = abs(h1[2]);
     if(asonov::in()) h1 = asonov::straighten * h1;
     b = hypot_d(2, h1);
     }
+  #else
+  if(0) {}
+  #endif
   #if CAP_BT
   else if(bt::in()) {
     b = intval(h1, C0);
diff --git a/graph.cpp b/graph.cpp
index fe0b2a34..01630341 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -856,9 +856,9 @@ EX bool drawItemType(eItem it, cell *c, const shiftmatrix& V, color_t icol, int
     }
 
   else if(it == itPalace) {
-    ld h = cgi.human_height;
     #if MAXMDIM >= 4
     if(GDIM == 3 && WDIM == 2) {
+      ld h = cgi.human_height;
       dynamicval<qfloorinfo> qfi2(qfi, qfi);
       shiftmatrix V2 = V * spin(ticks / 1500.);
       /* divisors should be higher than in plate renderer */
diff --git a/hud.cpp b/hud.cpp
index 06619612..3ae6b9d2 100644
--- a/hud.cpp
+++ b/hud.cpp
@@ -419,7 +419,9 @@ EX void drawStats() {
 
   bool cornermode = (vid.xres > vid.yres * 85/100 && vid.yres > vid.xres * 85/100);
   
+  #if MAXMDIM >= 4
   if(geometry == gRotSpace || geometry == gProduct) rots::draw_underlying(!cornermode);
+  #endif
   
   {
   
diff --git a/hyperpoint.cpp b/hyperpoint.cpp
index 00fab6e6..77e09c53 100644
--- a/hyperpoint.cpp
+++ b/hyperpoint.cpp
@@ -1096,6 +1096,7 @@ EX ld hdist0(const hyperpoint& mh) {
       auto d1 = product_decompose(mh);
       return hypot(PIU(hdist0(d1.second)), d1.first);
       }
+    #if MAXMDIM >= 4
     case gcSL2: {
       auto cosh_r = hypot(mh[2], mh[3]);
       auto phi = atan2(mh[2], mh[3]);
@@ -1105,6 +1106,7 @@ EX ld hdist0(const hyperpoint& mh) {
       ld bz = mh[0] * mh[1] / 2;
       return hypot(mh[0], mh[1]) + abs(mh[2] - bz);
       }
+    #endif
     default:
       return hypot_d(GDIM, mh);
     }
@@ -1415,9 +1417,13 @@ EX hyperpoint tangent_length(hyperpoint dir, ld length) {
 
 /** exponential function: follow the geodesic given by v */
 EX hyperpoint direct_exp(hyperpoint v) {
+  #if CAP_SOLV
   if(sn::in()) return nisot::numerical_exp(v);
+  #endif
+  #if MAXMDIM >= 4
   if(nil) return nilv::formula_exp(v);
   if(sl2 || stretch::in()) return stretch::mstretch ? nisot::numerical_exp(v) : rots::formula_exp(v);
+  #endif
   if(prod) return product::direct_exp(v);
   ld d = hypot_d(GDIM, v);
   if(d > 0) for(int i=0; i<GDIM; i++) v[i] = v[i] * sin_auto(d) / d;
@@ -1510,6 +1516,7 @@ EX unsigned bucketer(hyperpoint h) {
   return dx;
   }  
 
+#if MAXMDIM >= 4
 /** @brief project the origin to the triangle [h1,h2,h3] */
 EX hyperpoint project_on_triangle(hyperpoint h1, hyperpoint h2, hyperpoint h3) {
   h1 /= h1[3];
@@ -1526,6 +1533,7 @@ EX hyperpoint project_on_triangle(hyperpoint h1, hyperpoint h2, hyperpoint h3) {
   result[3] = 1;
   return normalize(result);
   }
+#endif
 
 EX hyperpoint lerp(hyperpoint a0, hyperpoint a1, ld x) {
   return a0 + (a1-a0) * x;
diff --git a/hypgraph.cpp b/hypgraph.cpp
index b7978dc2..c836ff3e 100644
--- a/hypgraph.cpp
+++ b/hypgraph.cpp
@@ -243,7 +243,9 @@ void move_y_to_z(hyperpoint& H, pair<ld, ld> coef) {
   if(GDIM == 3) {
     H[2] = H[1] * coef.second;
     H[1] = H[1] * coef.first;
+    #if MAXMDIM >= 4
     H[3] = 1;
+    #endif
     }
   }
 
@@ -432,6 +434,7 @@ void vr_disk(hyperpoint& ret, hyperpoint& H) {
     }
   }
 
+#if MAXMDIM >= 4
 /** Compute the three-point projection. Currently only works in isotropic 3D spaces. */
 EX void threepoint_projection(const hyperpoint& H, hyperpoint& ret) {
 
@@ -488,6 +491,7 @@ EX void threepoint_projection(const hyperpoint& H, hyperpoint& ret) {
   models::apply_orientation(ret[1], ret[0]);
   models::apply_orientation_yz(ret[2], ret[1]);
   }
+#endif
 
 EX void apply_other_model(shiftpoint H_orig, hyperpoint& ret, eModel md) {
 
@@ -1036,7 +1040,11 @@ EX void apply_other_model(shiftpoint H_orig, hyperpoint& ret, eModel md) {
       break;
     
     case mdThreePoint: 
+    #if MAXMDIM >= 4
       threepoint_projection(H, ret);
+    #else
+      throw hr_exception();
+    #endif
       break;
     
     case mdMollweide: 
@@ -2737,6 +2745,7 @@ EX bool do_draw(cell *c, const shiftmatrix& T) {
 
     if(cells_drawn > vid.cells_drawn_limit) return false;
     if(cells_drawn < 50) { limited_generation(c); return true; }
+    #if MAXMDIM >= 4
     if(nil && pmodel == mdGeodesic) {
       ld dist = hypot_d(3, inverse_exp(tC0(T), pQUICK));
       if(dist > sightranges[geometry] + (vid.sloppy_3d ? 0 : 0.9)) return false;
@@ -2757,6 +2766,7 @@ EX bool do_draw(cell *c, const shiftmatrix& T) {
       if(abs(T.shift * stretch::not_squared()) > sightranges[geometry]) return false;
       if(!limited_generation(c)) return false;
       }
+    #endif
     else if(vid.use_smart_range) {
       if(cells_drawn >= 50 && !in_smart_range(T)) return false;
       if(!limited_generation(c)) return false;
diff --git a/mapeditor.cpp b/mapeditor.cpp
index 98e1fda6..5ba6101e 100644
--- a/mapeditor.cpp
+++ b/mapeditor.cpp
@@ -474,10 +474,12 @@ EX namespace mapstream {
       f.write(S7);
       f.write(nilv::nilperiod);
       }
+    #if CAP_SOLV
     if(geometry == gArnoldCat) {
       f.write(asonov::period_xy);
       f.write(asonov::period_z);
       }
+    #endif
     if(prod) {
       f.write(hybrid::csteps);
       f.write(product::cspin);
@@ -573,11 +575,13 @@ EX namespace mapstream {
       f.read(nilv::nilperiod);
       nilv::set_flags();
       }
+    #if CAP_SOLV
     if(geometry == gArnoldCat && vernum >= 0xA80C) {
       f.read(asonov::period_xy);
       f.read(asonov::period_z);
       asonov::set_flags();
       }
+    #endif
     if(geometry == gProduct && vernum >= 0xA80C) {
       f.read(hybrid::csteps);
       if(vernum >= 0xA80D) f.read(product::cspin);
diff --git a/nonisotropic.cpp b/nonisotropic.cpp
index b7d0d1f6..68cfbdb7 100644
--- a/nonisotropic.cpp
+++ b/nonisotropic.cpp
@@ -1031,7 +1031,9 @@ EX namespace hybrid {
         });
       return T;
       }
+    #if MAXMDIM >= 4
     if(rotspace) return rots::ray_iadj(c, i);
+    #endif
     return currentmap->iadj(c, i);
     }
   
@@ -1337,6 +1339,7 @@ EX namespace hybrid {
       return mscale(get_corner_position(c, i+next), exp(lev));
       }
     else {
+      #if MAXMDIM >= 4
       ld tf, he, alpha;
       in_underlying_geometry([&] {
         hyperpoint h1 = get_corner_position(c, i);
@@ -1347,6 +1350,9 @@ EX namespace hybrid {
         alpha = atan2(hm[1], hm[0]);
         });
       return spin(alpha) * rots::uxpush(tf) * rots::uypush(next?he:-he) * rots::uzpush(lev) * C0;
+      #else
+      throw hr_exception();
+      #endif
       }
     }
   
@@ -2043,7 +2049,9 @@ EX namespace slr {
 EX }
 
 EX namespace rots {
-
+  EX ld underlying_scale = 0;
+  
+#if MAXMDIM >= 4
   EX transmatrix uxpush(ld x) { 
     if(sl2) return xpush(x);
     return cspin(1, 3, x) * cspin(0, 2, x);
@@ -2187,8 +2195,6 @@ EX namespace rots {
     return M;
     }
   
-  EX ld underlying_scale = 0;
-  
   EX void draw_underlying(bool cornermode) {
     if(underlying_scale <= 0) return;
     ld d = hybrid::get_where(centerover).second;
@@ -2306,7 +2312,7 @@ EX namespace rots {
       }
     }
 
-
+#endif
 EX }
 
 /** stretched rotation space (S3 or SLR) */
@@ -2820,9 +2826,11 @@ EX namespace nisot {
     #if CAP_SOLV
     if(sn::in()) return new sn::hrmap_solnih;
     #endif
-    if(nil) return new nilv::hrmap_nil;
     if(prod) return new product::hrmap_product;
+    #if MAXMDIM >= 4
+    if(nil) return new nilv::hrmap_nil;
     if(hybri) return new rots::hrmap_rotation_space;
+    #endif
     return NULL;
     }
   
@@ -2911,6 +2919,7 @@ EX namespace nisot {
       ginf[gNil].sides = argi();
       return 0;
       }
+    #if CAP_SOLV
     else if(argis("-catperiod")) {
       PHASEFROM(2);
       if(sol) stop_game();
@@ -2919,6 +2928,7 @@ EX namespace nisot {
       asonov::set_flags();
       return 0;
       }
+    #endif
     else if(argis("-prodperiod")) {
       PHASEFROM(2);
       if(prod) stop_game();
diff --git a/pattern2.cpp b/pattern2.cpp
index fdc39e4f..9332ba4e 100644
--- a/pattern2.cpp
+++ b/pattern2.cpp
@@ -1662,7 +1662,9 @@ EX namespace patterns {
     ep.extra_params["x"] = h[0];
     ep.extra_params["y"] = h[1];
     ep.extra_params["z"] = h[2];
+    #if MAXMDIM >= 4
     ep.extra_params["w"] = h[3];
+    #endif
     ep.extra_params["z40"] = zebra40(c);
     ep.extra_params["z3"] = zebra3(c);
     ep.extra_params["ev"] = emeraldval(c);
@@ -1701,12 +1703,14 @@ EX namespace patterns {
         ep.extra_params["x"+its(i)] = co[i];
       }
     #endif
+    #if CAP_SOLV
     if(asonov::in()) {
       auto co = asonov::get_coord(c->master);
       ep.extra_params["ax"] = szgmod(co[0], asonov::period_xy);
       ep.extra_params["ay"] = szgmod(co[1], asonov::period_xy);
       ep.extra_params["az"] = szgmod(co[2], asonov::period_z);      
       }
+    #endif
     if(nil) {
       auto co = nilv::get_coord(c->master);
       ep.extra_params["nx"] = szgmod(co[0], nilv::nilperiod[0]);
diff --git a/racing.cpp b/racing.cpp
index 8976412e..a39b3a0a 100644
--- a/racing.cpp
+++ b/racing.cpp
@@ -301,6 +301,7 @@ void find_track(cell *start, int sign, int len) {
           case 4: id = start->master->emeraldval - c1->master->emeraldval; break;
           }
         }
+      #if CAP_SOLV
       else if(asonov::in() && asonov::period_z) {
         auto co = asonov::get_coord(c->master);
         ld x = szgmod(co[0], asonov::period_xy);
@@ -311,6 +312,7 @@ void find_track(cell *start, int sign, int len) {
         }
       else if(sn::in())
         id = (start->master->distance - c1->master->distance) * sign;
+      #endif
       else
         id = trackval(c1);
       cellbydist[id].push_back(c1);
diff --git a/radar.cpp b/radar.cpp
index 15d0154f..e66fbc50 100644
--- a/radar.cpp
+++ b/radar.cpp
@@ -20,6 +20,7 @@ EX vector<radarline> radarlines;
 
 EX transmatrix radar_transform;
 
+#if MAXMDIM >= 4
 pair<bool, hyperpoint> makeradar(shiftpoint h) {
   if(GDIM == 3 && WDIM == 2) h.h = radar_transform * h.h;
 
@@ -93,9 +94,10 @@ void celldrawer::radar_grid() {
     if(c->move(t) && (c->move(t) < c || fake::split()))
       addradar(V*get_corner_position(c, t%c->type), V*get_corner_position(c, (t+1)%c->type), gridcolor(c, c->move(t)));
   }
+#endif
 
 EX void draw_radar(bool cornermode) {
-
+#if MAXMDIM >= 4
   if(dual::split([] { dual::in_subscreen([] { calcparam(); draw_radar(false); }); })) return;
   bool d3 = WDIM == 3;
   bool hyp = hyperbolic;
@@ -185,6 +187,14 @@ EX void draw_radar(bool cornermode) {
       displaychr(int(h[0]), int(h[1]), 0, int(h[2]), r.glyph, r.color);
       }
     }
+#endif
   }
 
+#if MAXMDIM < 4
+EX void addradar(const shiftmatrix& V, char ch, color_t col, color_t outline) { }
+  void drawcell_in_radar();
+
+void celldrawer::drawcell_in_radar() {}
+void celldrawer::radar_grid() {}
+#endif
 }
diff --git a/rug.cpp b/rug.cpp
index 810e2f8d..ad92bc65 100644
--- a/rug.cpp
+++ b/rug.cpp
@@ -423,6 +423,7 @@ ld clifford_torus::compute_mx() {
   return mx;
   }
 
+#if MAXMDIM >= 4
 EX void buildTorusRug() {
 
   calcparam_rug();
@@ -523,6 +524,7 @@ EX void buildTorusRug() {
 
   return;
   }
+#endif
 
 EX void verify() {
   vector<ld> ratios;
@@ -554,11 +556,13 @@ EX void buildRug() {
 
   need_mouseh = true;
   good_shape = false;
+  #if MAXMDIM >= 4
   if(euclid && bounded) {
     good_shape = true;
     buildTorusRug();
     return;
     }
+  #endif
   
   celllister cl(centerover ? centerover : cwt.at, get_sightrange(), vertex_limit, NULL);
 
@@ -965,7 +969,7 @@ EX void addNewPoints() {
 
 EX void physics() {
 
-  #if CAP_CRYSTAL
+  #if CAP_CRYSTAL && MAXMDIM >= 4
   if(in_crystal()) {
     crystal::build_rugdata();
     return;
diff --git a/screenshot.cpp b/screenshot.cpp
index dc9e9f66..94e2f122 100644
--- a/screenshot.cpp
+++ b/screenshot.cpp
@@ -307,7 +307,9 @@ EX always_false in;
       int j = i%3 ? i-1 : i+2;
       int k = j%3 ? j-1 : j+2;
       hyperpoint normal = (data[j] - data[i]) ^ (data[k] - data[i]);
+      #if MAXMDIM >= 4
       normal[3] = 0;
+      #endif
       if(sqhypot_d(3, normal) < 1e-6) {
         println(hlog, "bug ", tie(data[i], data[j], data[k]));
         }
diff --git a/yendor.cpp b/yendor.cpp
index 5865ff91..012a3d9e 100644
--- a/yendor.cpp
+++ b/yendor.cpp
@@ -197,8 +197,12 @@ EX namespace yendor {
 
   EX bool exhaustive_distance_appropriate() {
     if(euclid && (kite::in() || arcm::in() || arb::in() || quotient)) return true;
+    #if MAXMDIM >= 4
     if(nil && quotient) return true;
+    #endif
+    #if CAP_SOLV
     if(asonov::in() && asonov::period_xy && asonov::period_xy <= 256) return true;
+    #endif
     
     if(bounded) return true;