Add tests

composeApp/src/commonMain/kotlin/domain/clues.kt

@@ -1,12 +1,7 @@
 package domain
 
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.setValue
-
 sealed class Clue {
     abstract fun isRuleViolated(grid: Grid): Boolean
-    var isActive: Boolean by mutableStateOf(true)
 }
 
 sealed class HorizontalClue : Clue()
@@ -58,6 +53,10 @@ class TripletClue<C : ItemClass<C>>(val a: Item<C>, val b: Item<C>, val c: Item<
         val rowC = grid[cType.companion]
 
         for (i in 2 until grid.size) {
+            if (rowA[i-2].selection == a){
+                return rowB[i - 1].mayBe(b) &&
+                        rowC[i - 0].mayBe(c)
+            }
             if (rowA[i - 2].mayBe(a) &&
                 rowB[i - 1].mayBe(b) &&
                 rowC[i - 0].mayBe(c)