All cases
The Last Pages★☆☆about 5 min
A Color They Shouldn't Know★☆☆about 5 min
The Tripling Algae★☆☆about 5 min
The Plate Seen Upside Down★☆☆about 5 min
Clear Skies in 72 Hours★☆☆about 5 min
Multiplying a Hundred Numbers★☆☆about 5 min
The Heavily Guarded Cell★☆☆about 5 min
Cutting a Sausage into 11★☆☆about 5 min
When the Ice Melts★☆☆about 5 min
The Pencil-Rubbed Paper★☆☆about 5 min
Three Eggs★★★about 5 min
The Clue of "S"★★☆about 5 min
The Diary Weather★★☆about 5 min
The Daytime Moon★☆☆about 5 min
The Entrance That Showed Nothing★★☆about 5 min
A Thousand from Eight Eights★★☆about 5 min
The Sandbag Swap★★☆about 5 min
The Barbecue Bill★★☆about 5 min
Why She Wasn't Angry★☆☆about 5 min
The Lock That Opens in a Blackout★★☆about 5 min
The Book and the Bookmark★☆☆about 5 min
The Wet Window Frame★★☆about 5 min
Breaking a Chocolate Bar★★☆about 5 min
The Colored Dice★★☆about 5 min
Grandma's Remark★★☆about 5 min
The Under-Floor Storage★★☆about 5 min
Down from the Blacked-Out Department Store★☆☆about 5 min
The Pirates' Share★★★about 5 min
Vending Machine Juice★☆☆about 5 min
Five in a Line★★☆about 5 min
The Convenience Store Thief★★☆about 5 min
The Red Light★☆☆about 5 min
Times Four, Reversed★★☆about 5 min
The Elevator on a Rainy Day★★☆about 5 min
The Emergency Stairs★★☆about 5 min
The Same Numbers as the Stolen Bills★☆☆about 5 min
Five Sisters★☆☆about 5 min
The Key the Intruder Placed★★☆about 5 min
Three Cards★★★about 5 min
The Bill Held to the Light★☆☆about 5 min
Coffee and Milk★★☆about 5 min
The False Diary★☆☆about 5 min
The Label from the Wrong Era★★☆about 5 min
The Classroom Lock★☆☆about 5 min
Depth of the Footprints★★☆about 5 min
The Room He Was Locked In★☆☆about 5 min
The Balloon in the Accelerating Car★★☆about 5 min
Ten in a Circle★★☆about 5 min
Taro Slept Well★☆☆about 5 min
The Passage Above the Ceiling★★☆about 5 min
Who Ate It★☆☆about 5 min
Purity of the Crown★★☆about 5 min
Moonlight on a New Moon★☆☆about 5 min
The Trick That Tripped the Breaker★★☆about 5 min
Paths on a Grid★★☆about 5 min
The Faked Silhouette★★☆about 5 min
The Open Refrigerator★☆☆about 5 min
Who Broke the Promise★★☆about 5 min
Sighting at Dusk★☆☆about 5 min
The Drug in the Sugar★★☆about 5 min
Predicting the Ranking★★☆about 5 min
The Slow Clock★★☆about 5 min
Born on the Same Day★☆☆about 5 min
The Toy Shop Clerk★★☆about 5 min
The Door That Opens Only From Inside★☆☆about 5 min
Her Phone Number★★★about 5 min
How Rabbits Multiply★★☆about 5 min
The Entry Record Off by an Hour★★☆about 5 min
The Door Taken Off Its Hinges★★★about 5 min
The Same Date Twice★★☆about 5 min
The Medicine Bottles★★☆about 5 min
The Drink in the Painting★★☆about 5 min
The Cat Door★☆☆about 5 min
The Swapped Room Numbers★★☆about 5 min
Test Scores as Equations★☆☆about 5 min
Ways to Climb the Stairs★★☆about 5 min
Three Seconds to the Thunder★☆☆about 5 min
The Station Gate Record★★☆about 5 min
Angel, Devil, and Human★★☆about 5 min
Splitting the Bundles of Cash★★☆about 5 min
The Duplicated Key★★☆about 5 min
The Recorded Snoring★★☆about 5 min
Sum Equals Product★☆☆about 5 min
Trading in Empty Bottles★★☆about 5 min
The Ring's Tan Line★★☆about 5 min
The Chimney★★☆about 5 min
The Dropped Wristwatch★☆☆about 5 min
Hints to the PIN★★☆about 5 min
Stones Thrown into the Pond★★☆about 5 min
The Portrait in the Three Caskets★★☆about 5 min
The Phantom Thief X's Testimony★★★about 5 min
The Spinning Egg★☆☆about 5 min
A Rope Around the Earth★★★about 5 min
The Gap Under the Infrared Beams★★☆about 5 min
The Trains and the Bird★★☆about 5 min
The Strap When the Train Departs★☆☆about 5 min