This puzzle had multiple solutions and has been removed.
Suraromu
Honeycomb
DoubleDoku Anti-Knight Killer
Rules
This puzzle consists of two overlapping grids, each of which follows standard Killer Sudoku Rules. Additionally, no two cells a knight’s move [2,1] away from each other can have the same value.
Extra Groups Killer Sudoku
This puzzle from the archive was designed in June 2006.
Rules
1. Standard Killer Sudoku Rules apply.
2. The numbers along the diagonals must be 1-9 exclusive.
3. Colored regions refer to Extra Groups, which must also be 1-9 exclusive.
Shikaku
Slitherlink
Migration
Suraromu
Honeycomb
Here is the first honeycomb puzzle I designed as a proof of concept, before aesthetics were considered.
Rules
Standard Honeycomb rules.
