diff --git a/__pycache__/test.cpython-313.pyc b/__pycache__/test.cpython-313.pyc
new file mode 100644
index 0000000..c3d97e7
Binary files /dev/null and b/__pycache__/test.cpython-313.pyc differ
diff --git a/example.py b/example.py
index d830d5f..edfdcb3 100644
--- a/example.py
+++ b/example.py
@@ -1,54 +1,41 @@
-from enum import Enum
-from typing import Generic
+from modules.tag import Tag
+from modules.task import QTask
+from modules.task.factory import QTaskFactory
+from modules.variant_builder import VariantFactory
+from modules.variant_builder.task_pool import QTaskPool
 
-from option import Some
+tasks_on_first_topic = [QTask(f"1.{i + 1}", tags=Tag("topic", "1")) for i in range(5)]
+tasks_on_second_topic = [QTask(f"2.{i + 1}", tags=Tag("topic", "2")) for i in range(5)]
+tasks_on_third_topic = [QTask(f"3.{i + 1}", tags=Tag("topic", "3")) for i in range(5)]
+tasks_on_forth_topic = [QTask(f"4.{i + 1}", tags=Tag("topic", "4")) for i in range(5)]
+tasks_on_fifth_topic = [QTask(f"5.{i + 1}", tags=Tag("topic", "5")) for i in range(5)]
+tasks_on_sixth_topic = [QTask(f"6.{i + 1}", tags=Tag("topic", "6")) for i in range(5)]
+tasks_on_seventh_topic = [QTask(f"7.{i + 1}", tags=Tag("topic", "7")) for i in range(5)]
 
-from Quizard import Quizard, QuizTask, QuizTaskGeneratorMetadata, TaskGenerator
+task_pool = QTaskPool(
+    tasks_on_first_topic
+    + tasks_on_second_topic
+    + tasks_on_third_topic
+    + tasks_on_forth_topic
+    + tasks_on_fifth_topic
+    + tasks_on_sixth_topic
+    + tasks_on_seventh_topic
+)
 
+vf = VariantFactory(number_of_tasks=7, task_pool=task_pool)
 
-class TagCategory(str, Enum):
-    TOPIC = "topic"
-    DIFFICULTY = "difficulty"
+_ = vf.task[0].must.include_tag("topic", "1")
+_ = vf.task[1].must.include_tag("topic", "2")
+_ = vf.task[2].must.include_tag("topic", "3")
+_ = vf.task[3].must.include_tag("topic", "4")
+_ = vf.task[4].must.include_tag("topic", "5")
+_ = vf.task[5].must.include_tag("topic", "6")
+_ = vf.task[6].must.include_tag("topic", "7")
 
+variants = vf.generate_variants(number_of_variants=30)
 
-class TopicTag(str, Enum):
-    AVERAGE = "average"
-    VARIANCE = "variance"
-
-
-class MyTaskGenerator(TaskGenerator[TagCategory, TopicTag]):
-    def __init__(self):
-        self.metadata = QuizTaskGeneratorMetadata[TagCategory, TopicTag].from_values(
-            name=self.__class__.__name__,
-        )
-
-
-class AverageTask(MyTaskGenerator):
-    def generate(self):
-        return QuizTask(
-            "What is an average of 3, 4, 5 and 6?",
-            "4.5",
-            tags=[
-                (TagCategory.TOPIC, TopicTag.AVERAGE),
-            ],
-        )
-
-
-class AverageTask1(MyTaskGenerator):
-    def generate(self):
-        return QuizTask(
-            "What is an average of 1, 2, 3 and 4?",
-            "2.5",
-            tags=[
-                (TagCategory.TOPIC, TopicTag.VARIANCE),
-            ],
-        )
-
-    default_amount = Some(1)
-
-
-quizard = Quizard([AverageTask(), AverageTask1()], 3)
-
-quizard.fillTaskPool()
-
-print(*[task.generator_metadata.id for task in quizard.taskPool], sep="\n\n")
+i = 0
+for variant in variants:
+    print(f"Variant {i + 1}:")
+    print(*[task.question for task in variant.tasks])
+    i += 1
diff --git a/modules/tag/__init__.py b/modules/tag/__init__.py
index 5a0bc6b..63e7e17 100644
--- a/modules/tag/__init__.py
+++ b/modules/tag/__init__.py
@@ -20,7 +20,6 @@ class Tag(Generic[C, V]):
     val: V
 
 
-@dataclass
 class Tags(Generic[C, V]):
     """A collection of tags grouped by category
 
@@ -28,9 +27,11 @@ class Tags(Generic[C, V]):
         _dict: (dict[C, set[V]]): Internal dictionary storing tags grouped by category.
     """
 
-    _dict: dict[C, set[V]] = field(default_factory=dict)
+    _dict: dict[C, set[V]]
 
     def __init__(self, iter: Iterable[Tag[C, V]] | None = None):
+        self._dict = {}
+
         if iter:
             for tag in iter:
                 self._dict.setdefault(tag.cat, set()).add(tag.val)
@@ -101,9 +102,7 @@ class Tags(Generic[C, V]):
         lines: list[str] = []
         for category, values in self._dict.items():
             cat_str = str(category.value if isinstance(category, Enum) else category)
-            val_strs = sorted(
-                [str(v.value if isinstance(v, Enum) else v for v in values)]
-            )
+            val_strs = [str(v.value if isinstance(v, Enum) else v) for v in values]
             lines.append(f"{cat_str}: {', '.join(val_strs)}")
         return "\n".join(lines)
 
@@ -113,6 +112,7 @@ class Tags(Generic[C, V]):
         Yields:
             Tag[C, V]: Each tag in the collection.
         """
+
         for category, values in self._dict.items():
             for value in values:
                 yield Tag(category, value)
diff --git a/modules/tag/__pycache__/__init__.cpython-313.pyc b/modules/tag/__pycache__/__init__.cpython-313.pyc
new file mode 100644
index 0000000..e8973d3
Binary files /dev/null and b/modules/tag/__pycache__/__init__.cpython-313.pyc differ
diff --git a/modules/task/__init__.py b/modules/task/__init__.py
index 0bc683d..4659093 100644
--- a/modules/task/__init__.py
+++ b/modules/task/__init__.py
@@ -1,37 +1,42 @@
 import uuid
-from dataclasses import dataclass
-from typing import Generic, override
+from dataclasses import dataclass, field
+from typing import TYPE_CHECKING, Generic, override
 
 from option import Option
 
 from modules.tag import Tag, Tags
-from modules.task.factory.metadata import QTaskFactoryMetadata
 from modules.utils.types import A, C, Q, V
 from modules.utils.utils import indent
 
+if TYPE_CHECKING:
+    from modules.task.factory.metadata import QTaskFactoryMetadata
+
 
 @dataclass
 class QTask(Generic[C, V, Q, A]):
     question: Q
     answer: A
     tags: Tags[C, V]
-    factory_metadata: Option[QTaskFactoryMetadata[C, V]] = Option[
-        QTaskFactoryMetadata[C, V]
+    id: uuid.UUID
+    factory_metadata: Option["QTaskFactoryMetadata[C, V]"] = Option[
+        "QTaskFactoryMetadata[C, V]"
     ].maybe(None)
-    id: uuid.UUID = uuid.uuid4()
 
     def __init__(
         self,
         question: Q,
-        answer: A,
-        tags: Tags[C, V] | list[Tag[C, V]] | None = None,
+        answer: A = None,
+        tags: Tags[C, V] | list[Tag[C, V]] | Tag[C, V] | None = None,
     ):
         self.question = question
         self.answer = answer
+        if isinstance(tags, Tag):
+            self.tags = Tags[C, V]([tags])
         if isinstance(tags, list):
             self.tags = Tags[C, V](tags)
         elif isinstance(tags, Tags):
             self.tags = tags
+        self.id = uuid.uuid4()
 
     @override
     def __str__(self) -> str:
diff --git a/modules/task/__pycache__/__init__.cpython-313.pyc b/modules/task/__pycache__/__init__.cpython-313.pyc
new file mode 100644
index 0000000..51f9135
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diff --git a/modules/task/factory/__init__.py b/modules/task/factory/__init__.py
index c06e4fa..edd97cf 100644
--- a/modules/task/factory/__init__.py
+++ b/modules/task/factory/__init__.py
@@ -9,7 +9,6 @@ from modules.task.factory.metadata import QTaskFactoryMetadata
 from modules.utils.types import A, C, Q, V
 
 
-@runtime_checkable
 class QTaskFactory(ABC, Generic[C, V, Q, A]):
     id: uuid.UUID
     metadata: QTaskFactoryMetadata[C, V]
diff --git a/modules/task/factory/__pycache__/__init__.cpython-313.pyc b/modules/task/factory/__pycache__/__init__.cpython-313.pyc
new file mode 100644
index 0000000..7457e8f
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diff --git a/modules/task/factory/__pycache__/metadata.cpython-313.pyc b/modules/task/factory/__pycache__/metadata.cpython-313.pyc
new file mode 100644
index 0000000..87c0ee2
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diff --git a/modules/task/factory/metadata.py b/modules/task/factory/metadata.py
index 2fab93d..0137a2e 100644
--- a/modules/task/factory/metadata.py
+++ b/modules/task/factory/metadata.py
@@ -2,7 +2,7 @@ import uuid
 from dataclasses import dataclass, field
 from typing import Generic
 
-from option import NONE, Option
+from option import Option
 
 from modules.utils.types import C, V
 
diff --git a/modules/utils/__pycache__/types.cpython-313.pyc b/modules/utils/__pycache__/types.cpython-313.pyc
new file mode 100644
index 0000000..7de74e7
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diff --git a/modules/utils/__pycache__/utils.cpython-313.pyc b/modules/utils/__pycache__/utils.cpython-313.pyc
index 1dfdd49..a50d8c3 100644
Binary files a/modules/utils/__pycache__/utils.cpython-313.pyc and b/modules/utils/__pycache__/utils.cpython-313.pyc differ
diff --git a/modules/utils/utils.py b/modules/utils/utils.py
index 50e3d76..16304ae 100644
--- a/modules/utils/utils.py
+++ b/modules/utils/utils.py
@@ -1,6 +1,11 @@
+from random import Random
 from typing import TypeVar
 
 
 def indent(text: str, spaces: int = 2) -> str:
     prefix = " " * spaces
     return "\n".join(prefix + line for line in text.splitlines())
+
+
+rnd = Random()
+rnd.seed(42)
diff --git a/modules/variant/__pycache__/__init__.cpython-313.pyc b/modules/variant/__pycache__/__init__.cpython-313.pyc
new file mode 100644
index 0000000..10a4291
Binary files /dev/null and b/modules/variant/__pycache__/__init__.cpython-313.pyc differ
diff --git a/modules/variant_builder/__init__.py b/modules/variant_builder/__init__.py
index 4302334..1b3dce2 100644
--- a/modules/variant_builder/__init__.py
+++ b/modules/variant_builder/__init__.py
@@ -1,16 +1,96 @@
-from dataclasses import dataclass
 from typing import Generic
 
+from modules.task import QTask
 from modules.utils.types import A, C, Q, V
 from modules.variant import QVariant
+from modules.variant_builder.context import DynamicCtx
+from modules.variant_builder.default_task_selector import LeastUsedTaskSelector
+from modules.variant_builder.filters import Filter
 from modules.variant_builder.task_pool import QTaskPool
 from modules.variant_builder.task_selector import QTaskSelector
 from modules.variant_builder.variant_set import QVariantSet
+from modules.variant_builder.variant_task import VariantTask
 
 
-@dataclass
-class VariantBuilder(Generic[C, V, Q, A]):
+class VariantFactory(Generic[C, V, Q, A]):
     task_pool: QTaskPool[C, V, Q, A]
-    previos_variants: QVariantSet[C, V, Q, A]
-    current_variant: QVariant[C, V, Q, A]
+    previous_variants: QVariantSet[C, V, Q, A] = QVariantSet()
     task_selector: QTaskSelector[C, V, Q, A]
+    task: list[VariantTask[C, V, Q, A]]
+    number_of_tasks: int
+
+    def __init__(
+        self,
+        number_of_tasks: int,
+        task_pool: QTaskPool[C, V, Q, A],
+        task_selector: QTaskSelector[C, V, Q, A] | None = None,
+    ):
+        self.task = [VariantTask() for _ in range(number_of_tasks)]
+        self.number_of_tasks = number_of_tasks
+        self.task_pool = task_pool
+        self.task_selector = (
+            task_selector if task_selector is not None else LeastUsedTaskSelector()
+        )
+
+    def generate_variants(self, number_of_variants: int) -> QVariantSet[C, V, Q, A]:
+        variant_task_filters: list[Filter[C, V, Q, A]] = [
+            b.must.build() for b in self.task
+        ]
+        static_filter_matches_per_task = self._get_static_filter_matches(
+            variant_task_filters
+        )
+
+        dynamic_context = DynamicCtx(
+            self.task_pool,
+        )
+
+        for _ in range(number_of_variants):
+            variant_tasks: list[QTask[C, V, Q, A]] = []
+            for task_index in range(self.number_of_tasks):
+                dynamic_filtered_matches = self._get_dynamic_filter_matches(
+                    static_filter_matches_per_task[task_index],
+                    variant_task_filters[task_index],
+                    dynamic_context,
+                )
+
+                selected_task = self.task_selector.select(
+                    dynamic_filtered_matches, dynamic_context
+                )
+                variant_tasks.append(selected_task)
+                dynamic_context.current_variant_tasks.append(selected_task)
+
+            variant = QVariant(variant_tasks)
+            dynamic_context.previous_variants.append(variant)
+            dynamic_context.current_variant_tasks.clear()
+
+        return dynamic_context.previous_variants
+
+    def _get_static_filter_matches(
+        self, task_filters: list[Filter[C, V, Q, A]]
+    ) -> list[list[QTask[C, V, Q, A]]]:
+        statical_filter_matches_per_task: list[list[QTask[C, V, Q, A]]] = [
+            [] for _ in range(self.number_of_tasks)
+        ]
+
+        for task in self.task_pool:
+            task_filter_index = 0
+            for filter in task_filters:
+                if filter.static.is_satisfied(task):
+                    statical_filter_matches_per_task[task_filter_index].append(task)
+                task_filter_index += 1
+
+        return statical_filter_matches_per_task
+
+    def _get_dynamic_filter_matches(
+        self,
+        statically_filtered_pool: list[QTask[C, V, Q, A]],
+        filter: Filter[C, V, Q, A],
+        ctx: DynamicCtx[C, V, Q, A],
+    ) -> list[QTask[C, V, Q, A]]:
+        dynamic_filter_matches: list[QTask[C, V, Q, A]] = []
+
+        for task in statically_filtered_pool:
+            if filter.dynamic.check_if_satisfied(task, ctx):
+                dynamic_filter_matches.append(task)
+
+        return dynamic_filter_matches
diff --git a/modules/variant_builder/__pycache__/__init__.cpython-313.pyc b/modules/variant_builder/__pycache__/__init__.cpython-313.pyc
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diff --git a/modules/variant_builder/__pycache__/context.cpython-313.pyc b/modules/variant_builder/__pycache__/context.cpython-313.pyc
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index 0000000..5de9e24
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diff --git a/modules/variant_builder/__pycache__/default_task_selector.cpython-313.pyc b/modules/variant_builder/__pycache__/default_task_selector.cpython-313.pyc
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diff --git a/modules/variant_builder/__pycache__/task_pool.cpython-313.pyc b/modules/variant_builder/__pycache__/task_pool.cpython-313.pyc
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diff --git a/modules/variant_builder/__pycache__/task_selector.cpython-313.pyc b/modules/variant_builder/__pycache__/task_selector.cpython-313.pyc
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index 0000000..02bc048
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diff --git a/modules/variant_builder/__pycache__/variant_set.cpython-313.pyc b/modules/variant_builder/__pycache__/variant_set.cpython-313.pyc
new file mode 100644
index 0000000..6cefaf1
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diff --git a/modules/variant_builder/__pycache__/variant_task.cpython-313.pyc b/modules/variant_builder/__pycache__/variant_task.cpython-313.pyc
new file mode 100644
index 0000000..cdf9e49
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diff --git a/modules/variant_builder/context.py b/modules/variant_builder/context.py
index 3f7c925..d4ec410 100644
--- a/modules/variant_builder/context.py
+++ b/modules/variant_builder/context.py
@@ -1,6 +1,7 @@
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from typing import Generic
 
+from modules.task import QTask
 from modules.utils.types import A, C, Q, V
 from modules.variant import QVariant
 from modules.variant_builder.task_pool import QTaskPool
@@ -8,8 +9,9 @@ from modules.variant_builder.variant_set import QVariantSet
 
 
 @dataclass
-class DynamicFilterCtx(Generic[C, V, Q, A]):
+class DynamicCtx(Generic[C, V, Q, A]):
     task_pool: QTaskPool[C, V, Q, A]
-    previous_variants: QVariantSet[C, V, Q, A]
-    current_variant: QVariant[C, V, Q, A]
-    task_number: int
+    previous_variants: QVariantSet[C, V, Q, A] = field(
+        default_factory=QVariantSet[C, V, Q, A]
+    )
+    current_variant_tasks: list[QTask[C, V, Q, A]] = field(default_factory=list)
diff --git a/modules/variant_builder/default_task_selector.py b/modules/variant_builder/default_task_selector.py
new file mode 100644
index 0000000..fe1a406
--- /dev/null
+++ b/modules/variant_builder/default_task_selector.py
@@ -0,0 +1,63 @@
+import uuid
+from math import inf
+from test import best_candidate, min_max_intersections
+from typing import override
+
+from modules.task import QTask
+from modules.utils.types import A, C, Q, V
+from modules.utils.utils import rnd
+from modules.variant_builder.context import DynamicCtx
+from modules.variant_builder.task_pool import QTaskPool
+from modules.variant_builder.task_selector import QTaskSelector
+
+
+class LeastUsedTaskSelector(QTaskSelector[C, V, Q, A]):
+    task_usage_count: dict[uuid.UUID, int]
+
+    def __init__(self):
+        self.task_usage_count = {}
+
+    @override
+    def select(
+        self, filtered_tasks: list[QTask[C, V, Q, A]], ctx: DynamicCtx[C, V, Q, A]
+    ) -> QTask[C, V, Q, A]:
+        rnd.shuffle(filtered_tasks)
+
+        task_scores: list[int] = []
+
+        min_max_intersections = inf
+        for task in filtered_tasks:
+            max_intersections = 0
+            for variant in ctx.previous_variants:
+                intersections = 0
+                for t in ctx.current_variant_tasks:
+                    if t in variant.tasks:
+                        intersections += 1
+                if task in variant.tasks:
+                    intersections += 1
+                if intersections > max_intersections:
+                    max_intersections = intersections
+            task_scores.append(max_intersections)
+            if min_max_intersections > max_intersections:
+                min_max_intersections = max_intersections
+
+        if len(ctx.current_variant_tasks) == 6:
+            print(min_max_intersections)
+
+        best_candidates: list[QTask[C, V, Q, A]] = []
+
+        for task, score in zip(filtered_tasks, task_scores):
+            if score == min_max_intersections:
+                best_candidates.append(task)
+
+        least_used_score = inf
+        least_used_task: QTask[C, V, Q, A] = best_candidates[0]
+
+        for task in best_candidates:
+            if self.task_usage_count.setdefault(task.id, 0) < least_used_score:
+                least_used_score = self.task_usage_count[task.id]
+                least_used_task = task
+
+        self.task_usage_count[least_used_task.id] += 1
+
+        return least_used_task
diff --git a/modules/variant_builder/filters/__pycache__/__init__.cpython-313.pyc b/modules/variant_builder/filters/__pycache__/__init__.cpython-313.pyc
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index 0000000..deae6c4
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diff --git a/modules/variant_builder/filters/__pycache__/builder.cpython-313.pyc b/modules/variant_builder/filters/__pycache__/builder.cpython-313.pyc
new file mode 100644
index 0000000..bfb6877
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diff --git a/modules/variant_builder/filters/__pycache__/types.cpython-313.pyc b/modules/variant_builder/filters/__pycache__/types.cpython-313.pyc
new file mode 100644
index 0000000..f07dcb2
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diff --git a/modules/variant_builder/filters/builder.py b/modules/variant_builder/filters/builder.py
index afd70d7..a1737bf 100644
--- a/modules/variant_builder/filters/builder.py
+++ b/modules/variant_builder/filters/builder.py
@@ -5,11 +5,8 @@ from typing import Callable, Generic, Self, overload, override
 from modules.tag import Tag, Tags
 from modules.utils.types import A, C, Q, V
 from modules.variant_builder.filters import Filter
-from modules.variant_builder.filters.composite import CompositeFilter
 from modules.variant_builder.filters.dynamic import FilterDynamic
-from modules.variant_builder.filters.dynamic.composite import CompositeFilterDynamic
 from modules.variant_builder.filters.static import FilterStatic
-from modules.variant_builder.filters.static.composite import CompositeFilterStatic
 from modules.variant_builder.filters.static.must_be_one_of import MustBeOneOfFilter
 from modules.variant_builder.filters.static.must_include_all_tags import (
     MustIncludeAllTagsFilter,
@@ -92,6 +89,19 @@ class FilterBuilder(Generic[C, V, Q, A]):
     ) -> Self:
         return self.add_static(MustIncludeAllTagsFilter(tag, **kwargs))
 
+    @overload
+    def include_tag(self, category: C, value: V) -> Self: ...
+
+    @overload
+    def include_tag(self, category: Tag[C, V], value: None = None) -> Self: ...
+
+    def include_tag(self, category: C | Tag[C, V], value: V | None = None) -> Self:
+        if isinstance(category, Tag):
+            return self.include_all_tags(category)
+        else:
+            assert value is not None
+            return self.include_all_tags([Tag(category, value)])
+
     def be_inverse_of(
         self,
         filter: Callable[["FilterBuilder[C, V, Q, A]"], "FilterBuilder[C, V, Q, A]"],
diff --git a/modules/variant_builder/filters/dynamic/__init__.py b/modules/variant_builder/filters/dynamic/__init__.py
index dedf8c4..276e402 100644
--- a/modules/variant_builder/filters/dynamic/__init__.py
+++ b/modules/variant_builder/filters/dynamic/__init__.py
@@ -5,16 +5,15 @@ from typing import Generic, Protocol, override, runtime_checkable
 from modules.task import QTask
 from modules.utils.types import A, C, Q, V
 from modules.variant import QVariant
-from modules.variant_builder.context import DynamicFilterCtx
+from modules.variant_builder.context import DynamicCtx
 from modules.variant_builder.task_pool import QTaskPool
 from modules.variant_builder.variant_set import QVariantSet
 
 
-@runtime_checkable
 class FilterDynamic(ABC, Generic[C, V, Q, A]):
     @abstractmethod
     def check_if_satisfied(
-        self, task: QTask[C, V, Q, A], ctx: DynamicFilterCtx[C, V, Q, A]
+        self, task: QTask[C, V, Q, A], ctx: DynamicCtx[C, V, Q, A]
     ) -> bool: ...
 
     def __invert__(self) -> "FilterDynamic[C, V, Q, A]":
@@ -33,7 +32,7 @@ class DynamicFilterNegator(FilterDynamic[C, V, Q, A]):
 
     @override
     def check_if_satisfied(
-        self, task: QTask[C, V, Q, A], ctx: DynamicFilterCtx[C, V, Q, A]
+        self, task: QTask[C, V, Q, A], ctx: DynamicCtx[C, V, Q, A]
     ) -> bool:
         return not self.filter.check_if_satisfied(task, ctx)
 
diff --git a/modules/variant_builder/filters/dynamic/__pycache__/__init__.cpython-313.pyc b/modules/variant_builder/filters/dynamic/__pycache__/__init__.cpython-313.pyc
new file mode 100644
index 0000000..e5b419a
Binary files /dev/null and b/modules/variant_builder/filters/dynamic/__pycache__/__init__.cpython-313.pyc differ
diff --git a/modules/variant_builder/filters/dynamic/__pycache__/composite.cpython-313.pyc b/modules/variant_builder/filters/dynamic/__pycache__/composite.cpython-313.pyc
new file mode 100644
index 0000000..d420ddd
Binary files /dev/null and b/modules/variant_builder/filters/dynamic/__pycache__/composite.cpython-313.pyc differ
diff --git a/modules/variant_builder/filters/dynamic/composite.py b/modules/variant_builder/filters/dynamic/composite.py
index 8c7213c..fe31b1e 100644
--- a/modules/variant_builder/filters/dynamic/composite.py
+++ b/modules/variant_builder/filters/dynamic/composite.py
@@ -3,7 +3,7 @@ from typing import override
 
 from modules.task import QTask
 from modules.utils.types import A, C, Q, V
-from modules.variant_builder.context import DynamicFilterCtx
+from modules.variant_builder.context import DynamicCtx
 from modules.variant_builder.filters.dynamic import FilterDynamic
 
 
@@ -14,7 +14,7 @@ class CompositeFilterDynamic(FilterDynamic[C, V, Q, A]):
 
     @override
     def check_if_satisfied(
-        self, task: QTask[C, V, Q, A], ctx: DynamicFilterCtx[C, V, Q, A]
+        self, task: QTask[C, V, Q, A], ctx: DynamicCtx[C, V, Q, A]
     ) -> bool:
         return all(filter.check_if_satisfied(task, ctx) for filter in self.filters)
 
diff --git a/modules/variant_builder/filters/dynamic/must_not.py b/modules/variant_builder/filters/dynamic/must_not.py
deleted file mode 100644
index 4b4ef62..0000000
--- a/modules/variant_builder/filters/dynamic/must_not.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from modules.utils.types import A, C, Q, V
-from modules.variant_builder.filters.dynamic import FilterDynamic
-
-
-class FilterNegatorDynamic(FilterDynamic[C, V, Q, A]):
-    
diff --git a/modules/variant_builder/filters/static/CompositeFilterStatic b/modules/variant_builder/filters/static/CompositeFilterStatic
deleted file mode 100644
index feac656..0000000
--- a/modules/variant_builder/filters/static/CompositeFilterStatic
+++ /dev/null
@@ -1 +0,0 @@
- e
diff --git a/modules/variant_builder/filters/static/__pycache__/__init__.cpython-313.pyc b/modules/variant_builder/filters/static/__pycache__/__init__.cpython-313.pyc
new file mode 100644
index 0000000..f1afd8f
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diff --git a/modules/variant_builder/filters/static/__pycache__/composite.cpython-313.pyc b/modules/variant_builder/filters/static/__pycache__/composite.cpython-313.pyc
new file mode 100644
index 0000000..79be6cc
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diff --git a/modules/variant_builder/filters/static/__pycache__/must_be_one_of.cpython-313.pyc b/modules/variant_builder/filters/static/__pycache__/must_be_one_of.cpython-313.pyc
new file mode 100644
index 0000000..c4fe061
Binary files /dev/null and b/modules/variant_builder/filters/static/__pycache__/must_be_one_of.cpython-313.pyc differ
diff --git a/modules/variant_builder/filters/static/__pycache__/must_include_all_tags.cpython-313.pyc b/modules/variant_builder/filters/static/__pycache__/must_include_all_tags.cpython-313.pyc
new file mode 100644
index 0000000..3ae27de
Binary files /dev/null and b/modules/variant_builder/filters/static/__pycache__/must_include_all_tags.cpython-313.pyc differ
diff --git a/modules/variant_builder/filters/static/__pycache__/must_include_any_tag.cpython-313.pyc b/modules/variant_builder/filters/static/__pycache__/must_include_any_tag.cpython-313.pyc
new file mode 100644
index 0000000..a3b563b
Binary files /dev/null and b/modules/variant_builder/filters/static/__pycache__/must_include_any_tag.cpython-313.pyc differ
diff --git a/modules/variant_builder/filters/static/composite_filter.py b/modules/variant_builder/filters/static/composite_filter.py
deleted file mode 100644
index 48c5a11..0000000
--- a/modules/variant_builder/filters/static/composite_filter.py
+++ /dev/null
@@ -1,16 +0,0 @@
-from dataclasses import dataclass
-from typing import override
-
-from modules.task import QTask
-from modules.utils.types import A, C, Q, V
-from modules.variant_builder.filters import FilterBuilder
-from modules.variant_builder.filters.static import FilterStatic
-
-
-@dataclass
-class CompositeFilterStatic(FilterStatic[C, V, Q, A]):
-    filters: list[FilterStatic[C, V, Q, A]]
-
-    @override
-    def is_satisfied(self, task: QTask[C, V, Q, A]) -> bool:
-        return all(filter.is_satisfied(task) for filter in self.filters)
diff --git a/modules/variant_builder/filters/static/must_not.py b/modules/variant_builder/filters/static/must_not.py
deleted file mode 100644
index 4b0c503..0000000
--- a/modules/variant_builder/filters/static/must_not.py
+++ /dev/null
@@ -1,19 +0,0 @@
-from dataclasses import dataclass
-from typing import override
-
-from modules.task import QTask
-from modules.utils.types import A, C, Q, V
-from modules.variant_builder.filters.static import FilterStatic
-
-
-@dataclass
-class StaticFilterNegator(FilterStatic[C, V, Q, A]):
-    filter: FilterStatic[C, V, Q, A]
-
-    @override
-    def is_satisfied(self, task: QTask[C, V, Q, A]) -> bool:
-        return not self.filter.is_satisfied(task)
-
-    @override
-    def __invert__(self) -> "FilterStatic[C, V, Q, A]":
-        return self.filter
diff --git a/modules/variant_builder/task_pool.py b/modules/variant_builder/task_pool.py
index a72ad4f..fb616b2 100644
--- a/modules/variant_builder/task_pool.py
+++ b/modules/variant_builder/task_pool.py
@@ -1,3 +1,4 @@
+import random
 from dataclasses import dataclass, field
 from typing import Generic
 
@@ -5,6 +6,6 @@ from modules.task import QTask
 from modules.utils.types import A, C, Q, V
 
 
-@dataclass(frozen=True)
-class QTaskPool(Generic[C, V, Q, A]):
-    pool: list[QTask[C, V, Q, A]]
+class QTaskPool(list[QTask[C, V, Q, A]], Generic[C, V, Q, A]):
+    def shuffle(self):
+        random.shuffle(self)
diff --git a/modules/variant_builder/task_selector.py b/modules/variant_builder/task_selector.py
index 0e66b2e..6b8d38f 100644
--- a/modules/variant_builder/task_selector.py
+++ b/modules/variant_builder/task_selector.py
@@ -1,13 +1,15 @@
+from abc import ABC, abstractmethod
 from dataclasses import dataclass
-from typing import Protocol
+from typing import Generic, Protocol
 
 from modules.task import QTask
 from modules.utils.types import A, C, Q, V
+from modules.variant_builder.context import DynamicCtx
 from modules.variant_builder.task_pool import QTaskPool
 
 
-@dataclass
-class QTaskSelector(Protocol[C, V, Q, A]):
-    task_pool: QTaskPool[C, V, Q, A]
-
-    def select(self, filtered_task_pool_indexes: list[int]) -> QTask[C, V, Q, A]: ...
+class QTaskSelector(ABC, Generic[C, V, Q, A]):
+    @abstractmethod
+    def select(
+        self, filtered_tasks: list[QTask[C, V, Q, A]], ctx: DynamicCtx[C, V, Q, A]
+    ) -> QTask[C, V, Q, A]: ...
diff --git a/modules/variant_builder/variant_set.py b/modules/variant_builder/variant_set.py
index 817a4c1..9e7ec1a 100644
--- a/modules/variant_builder/variant_set.py
+++ b/modules/variant_builder/variant_set.py
@@ -6,9 +6,4 @@ from modules.variant import QVariant
 
 
 @dataclass
-class QVariantSet(Generic[C, V, Q, A]):
-    variants: list[QVariant[C, V, Q, A]] = field(default_factory=list)
-
-    def __iter__(self):
-        for variant in self.variants:
-            yield variant
+class QVariantSet(list[QVariant[C, V, Q, A]], Generic[C, V, Q, A]): ...
diff --git a/modules/variant_builder/variant_task.py b/modules/variant_builder/variant_task.py
index 71046f5..2a8bd97 100644
--- a/modules/variant_builder/variant_task.py
+++ b/modules/variant_builder/variant_task.py
@@ -1,6 +1,15 @@
+from dataclasses import dataclass, field
 from typing import Generic
 
+from option import Option
+
 from modules.utils.types import A, C, Q, V
+from modules.variant_builder.filters import Filter
+from modules.variant_builder.filters.builder import FilterBuilder
 
 
 class VariantTask(Generic[C, V, Q, A]):
+    must: FilterBuilder[C, V, Q, A]
+
+    def __init__(self):
+        self.must = FilterBuilder[C, V, Q, A]()
diff --git a/test.py b/test.py
new file mode 100644
index 0000000..364809c
--- /dev/null
+++ b/test.py
@@ -0,0 +1,33 @@
+from math import inf
+
+tasks1 = [f"1.{i + 1}" for i in range(5)]
+tasks2 = [f"2.{i + 1}" for i in range(5)]
+tasks3 = [f"3.{i + 1}" for i in range(5)]
+
+all_variants = []
+
+for i in tasks1:
+    for j in tasks2:
+        for k in tasks3:
+            all_variants.append([i, j, k])
+
+selected_variants = [all_variants[0]]
+
+for _ in range(9):
+    best_candidate = all_variants[0]
+    min_max_intersections = inf
+    for variant in all_variants:
+        max_intersections = -inf
+        for selected_variant in selected_variants:
+            intersections = 0
+            for j in range(3):
+                if selected_variant[j] == variant[j]:
+                    intersections += 1
+            if max_intersections < intersections:
+                max_intersections = intersections
+        if max_intersections < min_max_intersections:
+            min_max_intersections = max_intersections
+            best_candidate = variant
+    selected_variants.append(best_candidate)
+
+print(any([]), sep="\n")