Group Reverse

Infinix

Stone Grid

Another n-Queen Problem

Birthday Cake

Counting RNA sequences

Dancing Digits

算符破译 Equations in Disguise

Sapitaur's labyrinth

The problem of the crazy linguist

The least possible effort

Can you decide it for ME?

Musical instruments

The broken pedometer

Coloring the map, but not anyhow

The easiest way

Airplane Scheduling

Be Together Again and Forever

Chinese Mahjong

模拟 · 字符串 · 搜索 · 枚举

Digital Logic

编辑书稿 Editing a Book

搜索 · 深度优先搜索 DFS · 剪枝

Flipull

守卫键盘 Guarding the Chessboard

How Many Numbers?

Irrigation

Jewel Magnetizer

KTV

How old are you?

Decoding the message.

Magic square palindromes.

Only I did it!

O: dah dah dah!

Let's swim!

Tarot scores.

Reaching the fix-point.

The silver bullet.

Transportation system.

Improved tic-tac-toe.

Annoying painting tool

Black and white painting

Cylinder

Deli Deli

Expressions

Frequent values

ST 表

Grocery store

Halloween treats

Innoumerous bowling games

Open Source

Antimonotonicity

Humidex