All variants
Variant
Diagonal sum
Same rules. Different mysteries.
Normal sudoku rules apply: each row, column and box holds 1 to 9 once. Diagonal sum clues add their own constraint. Each case's brief has the exact wording.
38 open cases
- CASE 011 Nine On The Face Of It by FullDeck and Missing a Few Cards GAS Diagonal sum Thermo
- CASE 014 Whirlwind by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum
- CASE 024 Inner Reasons by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Kropki ratio
- CASE 044 A Special Day by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Killer
- CASE 071 Concentric Steering by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Thermo
- CASE 074 Dotagonal Sums by FullDeck and Missing a Few Cards GAS Diagonal sum Kropki
- CASE 078 Thoracic Park by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Kropki ratio Renban
- CASE 094 Oppi by FullDeck and Missing a Few Cards Indigestion Diagonal sum Killer
- CASE 095 Back and Forth by FullDeck and Missing a Few Cards GAS Diagonal sum
- CASE 099 On The Bias by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Sandwich
- CASE 101 Market Square by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Killer
- CASE 125 Turnip Court by FullDeck and Missing a Few Cards Heartburn Anti-knight Diagonal sum
- CASE 134 Torquage by FullDeck and Missing a Few Cards Strong Indigestion Arrow Diagonal sum
- CASE 139 Happy Mother's Day 2026 by FullDeck and Missing a Few Cards Heartburn Diagonal sum Killer Whisper 5
- CASE 160 Temperature Cycle by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Thermo
- CASE 171 CaDS 8-4-26 by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Killer
- CASE 178 Diagadots by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Kropki ratio
- CASE 182 Happy 65th, MaFC! by FullDeck and Missing a Few Cards Heartburn Diagonal sum Renban
- CASE 198 Subway Sums by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Sandwich
- CASE 239 Clusters by FullDeck and Missing a Few Cards Strong Indigestion Arrow Diagonal sum
- CASE 266 Octopus by FullDeck and Missing a Few Cards Heartburn Arrow Diagonal sum
- CASE 287 December 15 CaDS and Dots by FullDeck and Missing a Few Cards GAS Diagonal sum Killer Kropki ratio
- CASE 300 CAD 25-12-4 by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Killer
- CASE 301 Midnight by FullDeck and Missing a Few Cards GAS Diagonal sum Kropki
- CASE 308 Stepdown by FullDeck and Missing a Few Cards Indigestion Diagonal sum Thermo
- CASE 313 Diagonal Dalmatians by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Kropki
- CASE 314 Stacks by FullDeck and Missing a Few Cards GAS Diagonal sum Killer
- CASE 324 Happy Birthday, Laika! by FullDeck and Missing a Few Cards Heartburn Diagonal sum Kropki Region sum
- CASE 338 Slanted Whispers of Love by FullDeck and Missing a Few Cards Indigestion Diagonal sum Whisper 5
- CASE 342 Hose Connector by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Palindrome
- CASE 345 DiagoSh 5 by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Whisper 5
- CASE 348 The Sum Is Hot Today by FullDeck and Missing a Few Cards GAS Diagonal sum Thermo
- CASE 365 Storm Season by FullDeck and Missing a Few Cards Strong Indigestion Arrow Diagonal sum
- CASE 417 Turning 22 by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Killer
- CASE 442 Triscuit by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Thermo
- CASE 446 15-7 CaDS by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Killer
- CASE 452 Parity, Take The Wheel! by FullDeck and Missing a Few Cards Indigestion Diagonal sum Parity line
- CASE 470 Tweener CaDS by FullDeck and Missing a Few Cards Heartburn Diagonal sum Killer
- CASE 011 Nine On The Face Of It by FullDeck and Missing a Few Cards GAS Diagonal sum Thermo
- CASE 014 Whirlwind by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum
- CASE 024 Inner Reasons by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Kropki ratio
- CASE 044 A Special Day by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Killer
- CASE 071 Concentric Steering by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Thermo
- CASE 074 Dotagonal Sums by FullDeck and Missing a Few Cards GAS Diagonal sum Kropki
- CASE 078 Thoracic Park by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Kropki ratio
- CASE 094 Oppi by FullDeck and Missing a Few Cards Indigestion Diagonal sum Killer
- CASE 095 Back and Forth by FullDeck and Missing a Few Cards GAS Diagonal sum
- CASE 099 On The Bias by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Sandwich
- CASE 101 Market Square by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Killer
- CASE 125 Turnip Court by FullDeck and Missing a Few Cards Heartburn Anti-knight Diagonal sum
- CASE 134 Torquage by FullDeck and Missing a Few Cards Strong Indigestion Arrow Diagonal sum
- CASE 139 Happy Mother's Day 2026 by FullDeck and Missing a Few Cards Heartburn Diagonal sum Killer
- CASE 160 Temperature Cycle by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Thermo
- CASE 171 CaDS 8-4-26 by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Killer
- CASE 178 Diagadots by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Kropki ratio
- CASE 182 Happy 65th, MaFC! by FullDeck and Missing a Few Cards Heartburn Diagonal sum Renban
- CASE 198 Subway Sums by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Sandwich
- CASE 239 Clusters by FullDeck and Missing a Few Cards Strong Indigestion Arrow Diagonal sum
- CASE 266 Octopus by FullDeck and Missing a Few Cards Heartburn Arrow Diagonal sum
- CASE 287 December 15 CaDS and Dots by FullDeck and Missing a Few Cards GAS Diagonal sum Killer
- CASE 300 CAD 25-12-4 by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Killer
- CASE 301 Midnight by FullDeck and Missing a Few Cards GAS Diagonal sum Kropki
- CASE 308 Stepdown by FullDeck and Missing a Few Cards Indigestion Diagonal sum Thermo
- CASE 313 Diagonal Dalmatians by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Kropki
- CASE 314 Stacks by FullDeck and Missing a Few Cards GAS Diagonal sum Killer
- CASE 324 Happy Birthday, Laika! by FullDeck and Missing a Few Cards Heartburn Diagonal sum Kropki
- CASE 338 Slanted Whispers of Love by FullDeck and Missing a Few Cards Indigestion Diagonal sum Whisper 5
- CASE 342 Hose Connector by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Palindrome
- CASE 345 DiagoSh 5 by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Whisper 5
- CASE 348 The Sum Is Hot Today by FullDeck and Missing a Few Cards GAS Diagonal sum Thermo
- CASE 365 Storm Season by FullDeck and Missing a Few Cards Strong Indigestion Arrow Diagonal sum
- CASE 417 Turning 22 by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Killer
- CASE 442 Triscuit by FullDeck and Missing a Few Cards Strong Indigestion Diagonal sum Thermo
- CASE 446 15-7 CaDS by FullDeck and Missing a Few Cards Mild Indigestion Diagonal sum Killer
- CASE 452 Parity, Take The Wheel! by FullDeck and Missing a Few Cards Indigestion Diagonal sum Parity line
- CASE 470 Tweener CaDS by FullDeck and Missing a Few Cards Heartburn Diagonal sum Killer
