Logic Masters Deutschland e.V.

Three Square Trick

• Normal sudoku rules apply.
• Along a green line, adjacent digits must have a difference of at least 5.
• Digits within a cage must add up to the total given in that cage’s upper-left corner.
• A white dot separates two digits that are consecutive.
• An X separates two digits that add to 10 and a V separates two digits that add to 5.
• Not all possible dots, Xs and Vs are given.
• In addition to the nine standard 3×3 boxes, the grid contains three hidden 3×3 regions. Each is a magic square containing the digits 1–9 exactly once, with every row, column and both main diagonals summing to the same value. The additional regions may overlap one another, but none occupies the same position as a standard box.

Hints:

• If the solver is unfamiliar with 3x3 magic squares, the following three hints may be useful (read them backwards, however many you please). That said, it may also be interesting to deduce these properties for oneself
• .swor eerht eht neewteb yllauqe dedivid eb tsum hcihw ,evif ytrof ot mus 9–1 stigid ehT .neetfif si mus cigam ehT
• .elbissop ti sekam taht tigid ylno eht si evif dna ,neetfif ot mus taht stigid eerht fo senil ruof ot sgnoleb tI .evif si tigid lartnec ehT
• .ddo era egde hcae fo elddim eht ni stigid ruof eht elihw ,neve era stigid renroc ruof ehT

CTC app link: Click Here

Enjoy!