Sandwich Sudoku is a brilliant evolution of the classic Sudoku format. For those who find standard Sudoku a bit repetitive, the 'Sandwich' rules add a whole new dimension of logic. The numbers outside the grid tell you the sum of the digits sandwiched between the 1 and the 9 in that row or column. It sounds complicated, but it’s incredibly intuitive once you start.
This app is polished and user-friendly, developed by the minds behind the popular 'Cracking the Cryptic' channel. It’s a pure logic game that requires deduction rather than guessing. If you love brain teasers that truly challenge your number sense and logical reasoning, this is a must-download. It’s Sudoku for the next generation of puzzle lovers.
Available on: iPhone, iPad, iPod
Version 3Tue Sep 01 2020
10 new puzzles, all 100 puzzles are out now!
***** AUGUST UPDATE *****
10 new puzzles, all 100 puzzles are out now!
-------------------------------------
Presented by Cracking The Cryptic, YouTube's most popular Sudoku channel, here is the brand new "Sandwich Sudoku" game that has become an internet sensation!
In Sandwich Sudoku, the puzzle is presented with extra numbers outside the grid next to each row and column. These numbers indicate the SUM of cells sandwiched between the 1 and the 9 in that row/column. The logic required to solve the puzzles will appeal to anyone who enjoys normal Sudoku and a bit of basic maths. Each puzzle here has been lovingly hand-crafted by Mark Goodliffe and Simon Anthony, the hosts of Cracking The Cryptic. They've even included their own hints on each puzzle to help if you get stuck. Mark and Simon have both represented the UK many times in the World Sudoku Championship.
“I love it!”
Alex Bellos, author of Alex's Adventures in Numberland
Features:
100 hand-crafted levels
Many themes to choose from
Hints written by Mark and Simon!
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.***** AUGUST UPDATE *****
10 new puzzles, all 100 puzzles are out now!
-------------------------------------
Presented by Cracking The Cryptic, YouTube's most popular Sudoku channel, here is the brand new "Sandwich Sudoku" game that has become an internet sensation!
In Sandwich Sudoku, the puzzle is presented with extra numbers outside the grid next to each row and column. These numbers indicate the SUM of cells sandwiched between the 1 and the 9 in that row/column. The logic required to solve the puzzles will appeal to anyone who enjoys normal Sudoku and a bit of basic maths. Each puzzle here has been lovingly hand-crafted by Mark Goodliffe and Simon Anthony, the hosts of Cracking The Cryptic. They've even included their own hints on each puzzle to help if you get stuck. Mark and Simon have both represented the UK many times in the World Sudoku Championship.
“I love it!”
Alex Bellos, author of Alex's Adventures in Numberland
Features:
100 hand-crafted levels
Many themes to choose from
Hints written by Mark and Simon!






In Sandwich Sudoku, the grid is filled with the numbers 1-9, but there's a twist: numbers outside the grid indicate the sum of the digits 'sandwiched' between the 1 and the 9 in that row or column. Developed by logic experts, this game features hand-crafted puzzles that range from beginner-friendly to expertly difficult. No guessing required—just pure, satisfying deduction.
Unique 'Sandwich Sum' Ruleset
Hand-Crafted Puzzles (No Computer Generation)
Intuitive Interface and Note-Taking
Hints from Logic Experts
Look for rows with a '0' outside. This means the 1 and 9 must be touching. Conversely, a '35' means the 1 and 9 must be at the very ends of the row (slots 1 and 9), with all other numbers sandwiched in between.
Use the sandwich sums to eliminate possibilities for where the 1 and 9 can go. Once those anchors are set, the remaining math becomes much simpler to solve.
Only basic addition is required! The challenge comes from the logical deduction of where the numbers fit.