diff --git a/src/components/view/board/BoardView.tsx b/src/components/view/board/BoardView.tsx
index f4ecabf..1afe933 100644
--- a/src/components/view/board/BoardView.tsx
+++ b/src/components/view/board/BoardView.tsx
@@ -12,6 +12,7 @@ import {
   ContextMenuItem,
   ContextMenuTrigger,
 } from "@/components/ui/context-menu";
+import { useState, useEffect, useRef, useCallback } from "react";
 
 export default function BoardView({
   tags,
@@ -20,6 +21,18 @@ export default function BoardView({
   createTask,
   statuses,
 }: TaskViewProps) {
+  const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set());
+  const [isDraggingSelection, setIsDraggingSelection] = useState(false);
+  const [selectionBox, setSelectionBox] = useState<{
+    startX: number;
+    startY: number;
+    endX: number;
+    endY: number;
+  } | null>(null);
+  const boardRef = useRef<HTMLDivElement>(null);
+  const taskCardRefs = useRef<Record<string, HTMLDivElement | null>>({});
+  const mouseDownPos = useRef<{ x: number; y: number } | null>(null);
+
   function onDragEnd(result: any) {
     const { draggableId, source, destination } = result;
     if (!destination) return;
@@ -37,10 +50,130 @@ export default function BoardView({
     });
   }
 
-  // Group tasks by status, using statuses from first available todo entity
-  const tasksArray = Object.values(tasks);
+  const deleteSelected = useCallback(() => {
+    if (selectedIds.size === 0) return;
+    const updated = { ...tasks };
+    selectedIds.forEach((id) => delete updated[id]);
+    setTasks(updated);
+    setSelectedIds(new Set());
+  }, [selectedIds, tasks, setTasks]);
 
-  // Sort tasks by creation date within each status
+  // Ctrl+A to select all, Backspace/Delete to delete selected
+  useEffect(() => {
+    function handleKeyDown(e: KeyboardEvent) {
+      if (e.key === "a" && (e.ctrlKey || e.metaKey)) {
+        e.preventDefault();
+        setSelectedIds(new Set(Object.keys(tasks)));
+      }
+      if (e.key === "Backspace" || e.key === "Delete") {
+        // Don't fire if user is typing in an input/textarea
+        const target = e.target as HTMLElement;
+        if (
+          target.tagName === "INPUT" ||
+          target.tagName === "TEXTAREA" ||
+          target.isContentEditable
+        )
+          return;
+        deleteSelected();
+      }
+    }
+    window.addEventListener("keydown", handleKeyDown);
+    return () => window.removeEventListener("keydown", handleKeyDown);
+  }, [tasks, deleteSelected]);
+
+  // Mouse drag selection
+  useEffect(() => {
+    function handleMouseDown(e: MouseEvent) {
+      // Only start selection if clicking on the board background (not a card)
+      const target = e.target as HTMLElement;
+      const isCard = target.closest("[data-task-card]");
+      if (isCard) return;
+      if (e.button !== 0) return;
+
+      mouseDownPos.current = { x: e.clientX, y: e.clientY };
+    }
+
+    function handleMouseMove(e: MouseEvent) {
+      if (!mouseDownPos.current) return;
+      const dx = Math.abs(e.clientX - mouseDownPos.current.x);
+      const dy = Math.abs(e.clientY - mouseDownPos.current.y);
+      if (dx > 4 || dy > 4) {
+        setIsDraggingSelection(true);
+        setSelectionBox({
+          startX: mouseDownPos.current.x,
+          startY: mouseDownPos.current.y,
+          endX: e.clientX,
+          endY: e.clientY,
+        });
+      }
+    }
+
+    function handleMouseUp(e: MouseEvent) {
+      if (isDraggingSelection && selectionBox) {
+        // Find all task cards that intersect with the selection box
+        const minX = Math.min(selectionBox.startX, selectionBox.endX);
+        const maxX = Math.max(selectionBox.startX, selectionBox.endX);
+        const minY = Math.min(selectionBox.startY, selectionBox.endY);
+        const maxY = Math.max(selectionBox.startY, selectionBox.endY);
+
+        const newSelected = new Set<string>();
+        Object.entries(taskCardRefs.current).forEach(([id, el]) => {
+          if (!el) return;
+          const rect = el.getBoundingClientRect();
+          if (
+            rect.left < maxX &&
+            rect.right > minX &&
+            rect.top < maxY &&
+            rect.bottom > minY
+          ) {
+            newSelected.add(id);
+          }
+        });
+
+        if (e.shiftKey) {
+          setSelectedIds((prev) => new Set([...prev, ...newSelected]));
+        } else {
+          setSelectedIds(newSelected);
+        }
+      } else if (!isDraggingSelection) {
+        // Click on empty area deselects
+        const target = e.target as HTMLElement;
+        const isCard = target.closest("[data-task-card]");
+        if (!isCard) {
+          setSelectedIds(new Set());
+        }
+      }
+
+      mouseDownPos.current = null;
+      setIsDraggingSelection(false);
+      setSelectionBox(null);
+    }
+
+    window.addEventListener("mousedown", handleMouseDown);
+    window.addEventListener("mousemove", handleMouseMove);
+    window.addEventListener("mouseup", handleMouseUp);
+    return () => {
+      window.removeEventListener("mousedown", handleMouseDown);
+      window.removeEventListener("mousemove", handleMouseMove);
+      window.removeEventListener("mouseup", handleMouseUp);
+    };
+  }, [isDraggingSelection, selectionBox]);
+
+  function handleTaskClick(e: React.MouseEvent, taskId: string) {
+    if (e.ctrlKey || e.metaKey) {
+      setSelectedIds((prev) => {
+        const next = new Set(prev);
+        if (next.has(taskId)) next.delete(taskId);
+        else next.add(taskId);
+        return next;
+      });
+    } else if (e.shiftKey) {
+      setSelectedIds((prev) => new Set([...prev, taskId]));
+    }
+    // Normal click handled by SheetTrigger (task edit) if not multi-select
+  }
+
+  const tasksArray = Object.values(tasks);
   const tasksByStatus = statuses.map((status) => ({
     status,
     tasks: tasksArray
@@ -48,8 +181,62 @@ export default function BoardView({
       .sort((a, b) => a.createdAt - b.createdAt),
   }));
 
+  const selRect = selectionBox
+    ? {
+        left: Math.min(selectionBox.startX, selectionBox.endX),
+        top: Math.min(selectionBox.startY, selectionBox.endY),
+        width: Math.abs(selectionBox.endX - selectionBox.startX),
+        height: Math.abs(selectionBox.endY - selectionBox.startY),
+      }
+    : null;
+
   return (
-    <div className="w-full h-full flex flex-col gap-6 overflow-hidden flex-1 min-h-0">
+    <div
+      ref={boardRef}
+      className="w-full h-full flex flex-col gap-6 overflow-hidden flex-1 min-h-0 relative"
+    >
+      {/* Selection box overlay */}
+      {isDraggingSelection && selRect && (
+        <div
+          className="fixed pointer-events-none z-50 border border-primary bg-primary/10 rounded"
+          style={{
+            left: selRect.left,
+            top: selRect.top,
+            width: selRect.width,
+            height: selRect.height,
+          }}
+        />
+      )}
+
+      {/* Delete bar when items selected */}
+      {selectedIds.size > 0 && (
+        <div className="flex items-center gap-2 px-3 py-2 bg-destructive/10 border border-destructive/30 rounded-md text-sm text-destructive">
+          <span className="font-medium">
+            {selectedIds.size} task{selectedIds.size !== 1 ? "s" : ""} selected
+          </span>
+          <span className="text-muted-foreground">
+            — press Backspace to delete
+          </span>
+          <Button
+            size="sm"
+            variant="destructive"
+            className="ml-auto h-7"
+            onClick={deleteSelected}
+          >
+            <Trash2 className="h-3 w-3 mr-1" />
+            Delete
+          </Button>
+          <Button
+            size="sm"
+            variant="ghost"
+            className="h-7 text-muted-foreground"
+            onClick={() => setSelectedIds(new Set())}
+          >
+            Clear
+          </Button>
+        </div>
+      )}
+
       <DragDropContext onDragEnd={onDragEnd}>
         <div className="grid grid-cols-1 md:grid-cols-3 gap-6 items-start flex-1 h-full min-h-0">
           {tasksByStatus.map(({ status, tasks: statusTasks }) => (
@@ -85,9 +272,14 @@ export default function BoardView({
                             <ContextMenu>
                               <ContextMenuTrigger asChild>
                                 <div
-                                  ref={provided.innerRef}
+                                  ref={(el) => {
+                                    provided.innerRef(el);
+                                    taskCardRefs.current[task.id] = el;
+                                  }}
                                   {...provided.draggableProps}
                                   {...provided.dragHandleProps}
+                                  data-task-card={task.id}
+                                  onClick={(e) => handleTaskClick(e, task.id)}
                                 >
                                   <BoardTask
                                     setTask={(t) =>
@@ -99,6 +291,17 @@ export default function BoardView({
                                     provided={provided}
                                     task={task}
                                     tags={tags}
+                                    isSelected={selectedIds.has(task.id)}
+                                    onDelete={(id) => {
+                                      const updated = { ...tasks };
+                                      delete updated[id];
+                                      setTasks(updated);
+                                      setSelectedIds((prev) => {
+                                        const next = new Set(prev);
+                                        next.delete(id);
+                                        return next;
+                                      });
+                                    }}
                                   />
                                 </div>
                               </ContextMenuTrigger>
@@ -110,6 +313,11 @@ export default function BoardView({
                                     const updated = { ...tasks };
                                     delete updated[task.id];
                                     setTasks(updated);
+                                    setSelectedIds((prev) => {
+                                      const next = new Set(prev);
+                                      next.delete(task.id);
+                                      return next;
+                                    });
                                   }}
                                 >
                                   <Trash2 className="text-destructive" />
@@ -136,4 +344,4 @@ export default function BoardView({
       </DragDropContext>
     </div>
   );
-}
+}
\ No newline at end of file
diff --git a/src/components/view/board/Task.tsx b/src/components/view/board/Task.tsx
index 5f58544..d662510 100644
--- a/src/components/view/board/Task.tsx
+++ b/src/components/view/board/Task.tsx
@@ -14,6 +14,7 @@ import TaskEdit from "../edit/TaskEdit";
 import { Button } from "@/components/ui/button";
 import { NotepadText, Trash2 } from "lucide-react";
 import DocDialog from "../edit/DocDialog";
+import { cn } from "@/lib/utils";
 
 export default function BoardTask({
   task,
@@ -21,24 +22,27 @@ export default function BoardTask({
   setTask,
   tags,
   onDelete,
+  isSelected,
 }: {
   task: Task;
   setTask: (t: Task) => void;
   provided: DraggableProvided;
   tags: Record<TagId, Tag>;
   onDelete?: (taskId: string) => void;
+  isSelected?: boolean;
 }) {
   return (
     <TaskEdit task={task} tags={tags} setTask={setTask}>
       <SheetTrigger asChild>
         <Card
-          ref={provided.innerRef}
-          {...provided.draggableProps}
-          {...provided.dragHandleProps}
-          className="bg-background cursor-grab active:cursor-grabbing"
+          className={cn(
+            "bg-background cursor-grab active:cursor-grabbing transition-all duration-150",
+            isSelected &&
+              "ring-2 ring-primary ring-offset-1 bg-primary/5 mt-1"
+          )}
         >
           <CardHeader>
-            <CardTitle className="flex items-center justify-between">
+            <CardTitle className="flex items-center justify-between select-none">
               <span className="text-sm font-semibold">{task.title}</span>
               <div className="flex gap-1 ml-auto">
                 <DocDialog task={task} setTask={setTask} tags={tags}>
@@ -73,7 +77,7 @@ export default function BoardTask({
               </CardDescription>
             )}
           </CardHeader>
-          <CardContent className="flex flex-wrap gap-1.5 overflow-hidden">
+          <CardContent className="flex flex-wrap gap-1.5 overflow-hidden select-none">
             {task.tagIds?.map((tagId) => (
               <Badge
                 key={tagId}
@@ -92,4 +96,4 @@ export default function BoardTask({
       </SheetTrigger>
     </TaskEdit>
   );
-}
+}
\ No newline at end of file