diff --git a/items.cpp b/items.cpp
index f6a465b3..2f22be83 100644
--- a/items.cpp
+++ b/items.cpp
@@ -61,6 +61,10 @@ EX void pickupMovedItems(cell *c) {
         }
   }
 
+EX bool in_lovasz() {
+  return specialland == laMotion && bounded && ls::single() && !daily::on;
+  }
+
 EX bool collectItem(cell *c2, bool telekinesis IS(false)) {
 
   bool dopickup = true;
diff --git a/menus.cpp b/menus.cpp
index 2859113a..905adda4 100644
--- a/menus.cpp
+++ b/menus.cpp
@@ -599,7 +599,21 @@ EX void mode_higlights() {
     clearMessages();
     welcomeMessage();
     }));
-  
+
+  dialog::addItem(XLAT("Lovász Conjecture"), 'L');
+  dialog::add_action(dialog::add_confirmation([] {
+    popScreenAll();
+    resetModes();
+    set_geometry(gKleinQuartic);
+    gp::param = gp::loc(1, 1);
+    set_variation(eVariation::untruncated);
+    
+    firstland = specialland = laMotion;
+    start_game();
+    clearMessages();
+    welcomeMessage();
+    }));
+
   #if CAP_CRYSTAL
   if(hiitemsMax(itHolyGrail) || cheater || autocheat) {
     dialog::addItem(XLAT("Knight of the 16-Cell Table"), '1');
diff --git a/monstergen.cpp b/monstergen.cpp
index 01633f63..78271e94 100644
--- a/monstergen.cpp
+++ b/monstergen.cpp
@@ -377,7 +377,7 @@ EX void wandering() {
     
     if(smallbounded_generation && !c->item && hrand(5) == 0 && c->land != laHalloween) {
       if(passable(c, NULL, 0) || specialland == laKraken) {
-        if(c->land != laGraveyard && (c->land != laMotion || !ls::single() || daily::on) && !haveOrbPower() && specialland != laHell) for(int it=0; it<1000 && !c->item; it++)
+        if(c->land != laGraveyard && !in_lovasz() && !haveOrbPower() && specialland != laHell) for(int it=0; it<1000 && !c->item; it++)
           placeLocalOrbs(c);
         if(!c->item) c->item = wanderingTreasure(c);
         if(c->item == itShard) {
diff --git a/quit.cpp b/quit.cpp
index 7ad2c69f..91f6e3e2 100644
--- a/quit.cpp
+++ b/quit.cpp
@@ -327,9 +327,9 @@ EX void showMission() {
   const bool sweeper = false;
   #endif
 
-  if(!peace::on && !racing::on && !sweeper)
+  if(!peace::on && !racing::on && !sweeper && !in_lovasz())
     dialog::addInfo(XLAT("Your score: %1", its(gold())));
-  if(!peace::on && !racing::on && !sweeper)
+  if(!peace::on && !racing::on && !sweeper && !in_lovasz())
     dialog::addInfo(XLAT("Enemies killed: %1", its(tkills())));
 
 #if CAP_TOUR
@@ -352,6 +352,18 @@ EX void showMission() {
       }
     }
   #endif
+  else if(in_lovasz()) {
+    int score = 0, all = 0;
+    for(cell *c: currentmap->allcells()) {
+      if(c->wall == waChasm || c->item == itOrbInvis)
+        score++;
+      all++;
+      }
+    dialog::addInfo(XLAT("Dropped floors: %1/%2", its(score), its(all)));
+    if(score == all) dialog::addInfo(XLAT("CONGRATULATIONS!"), iinf[itOrbYendor].color);
+    if(score == all && geometry == gKleinQuartic && variation == eVariation::untruncated && gp::param == gp::loc(1,1))
+      achievement_gain_once("LOVASZ", rg::special_geometry);      
+    }
   else {  
     if(0)
       ;
diff --git a/system.cpp b/system.cpp
index c81f5d2a..cd4a88fa 100644
--- a/system.cpp
+++ b/system.cpp
@@ -335,7 +335,7 @@ EX void initgame() {
     generate_mines();
     }
   
-  if(specialland == laMotion && bounded && ls::any_order() && !daily::on) {
+  if(in_lovasz()) {
     cwt.at->item = itOrbInvis;
     }