Logi-5 Puzzle 是一种变体数独。一个5x5的方阵被切割成五个不规则的区域，每一个区域有相同颜色的五个方格。将方阵中毎一个空格填满，并让每一横列、每一直行、每一区域都包含1到5的所有数字。换句话说，每一个数字在每一横列、每一直行、每一区域出现正好一次。
“变形数独5” (Logi5Puzz) 应用程序随机产生无数种可能的数独5x5问题，没有任何预订的样式。本应用程序先填入4到6个数字，玩家再将其余空格填满。答案一定是唯一。
按方阵中的一个方格，包含5个数字和一个空白钮的选单就会弹出。按一个数字填入该方格，或按空白钮去删除现有数字。轻按“新题”钮去重新开始一个新的题目。轻按“检查”钮去查核目前答案的正确性。轻按“复原”钮去恢复前一次数字改变。轻按“重做”钮去重复之前被“复原”钮恢复的改变。轻按“说明”钮去显示使用说明。
“变形数独5” (Logi5Puzz) 受美国、英国、加拿大、德国、法国等国客户五星评分。虽然5x5大小减低一般九宫格数独的复杂度，不规则型数独提供普通数独未见的挑战。本应用程序很适合为初学者或儿童的学习工具。4至6岁儿童便可尝试。本应用程序也适合那些无法花长时间玩九宫格数独，或欲体验不规则型数独乐趣的玩家。这是一个老少咸宜的益智游戏。
支援繁体和简体中文。百分之百中文使用界面及中文显示。
请亦参阅 Logi5Puzz+ “变形数独” 应用程序，一个提供更多功能的高阶版本:
1. 在iPad上设定方阵大小3x3到16x16，或在iPhone上设定方阵大小3x3到9x9。
2. 绝无广告。完全不使用网路工作。
3. 可选择标记(笔记)功能、提示功能、及密码锁住设定功能。
Logi-5 Puzzle is a variation of Sudoku game. A 5x5 grid of squares is divided into 5 irregular (or pentomino) regions, each with 5 squares of the same color. The objective is to fill the grid so that each row, each column, and each region contains all of the 5 digits from 1 to 5. In other words, each digit should appear exactly once in each row, each column, and each region.
Logi5Puzz app randomly generates a huge number of possible puzzles without any predefined patterns. The app usually sets 4 to 6 numbers for each puzzle, and the player needs to finish the rest. The solution must be unique for each game.
Tap a square and a list of 5 digits plus a blank button will pop up for the player to choose a number to fill into that square. Select the blank button to clear the existing number in the square.
Tap the "Check" button to check the correctness of the result. Tap the "New" button to start a new puzzle. Tap the "Undo" button to reverse the previous actions. Tap "Redo" button to restore those actions reversed by "Undo". Tap "Help" button to get instructions.
Although 5x5 size reduces complexity of 9x9 sudoku, the irregular (or pentomino) regions of puzzles introduces challenges not seen in regular sudoku. Logi5Puzz is very good for those who do not want to spend long time playing regular 9x9 sudoku, and young kids to whom 9x9 sudoku is too challenging. It helps kids develop problem solving skills. Kids 4-6 years old may start to play. It is great fun for adults to play and keep their brain sharp.
Please also check out Logi5Puzz+, an advanced version with more features:
1. Grid sizes configurable from 3x3 to 16x16 on iPad, and from 3x3 to 9x9 on iPhone.
2. Absolutely advertisement free. No internet connection required to play.
3. Optional smart/manual notes (pencil mark), hints and passcode lock.
4. Plays two games simultaneously and switch any time.