I occasionally make puzzles under the “Satoshi Rikami” alias.
Among the games listed on this page, cryptic crosswords are my favorites to play and create, followed by (variant) Sudoku and then Connections.
(Unless otherwise stated, all puzzles are licensed under CC-BY-SA-4.0.)
Cryptic Crosswords
Head over to my Crosshare blog to play all of my cryptic crosswords online.
You can also download the .ipuz files below and play them offline using programs such as GNOME Crosswords.
- 2026-01-06 - Mini Cryptic #1
- 2026-01-10 - Mini Cryptic #2 (Math Edition)
Variant Sudoku
The online-playable puzzles are currently hosted on SudokuPad. Visit my user profile on Logic Masters Germany or the puzzle pages directly to access them.
You can also download .svg and .png files for offline play below, as well as .json files that can be imported into SudokuMaker, where I construct all of my puzzles. This is where you can let a computer solve the puzzle for you, or even modify the puzzle yourself if you wish.
- 2026-01-12 - #1 - Pinwheel Set (download)
Connections
These puzzles are currently hosted on Connections Plus. The rules for this game can be found here.
- 2026-01-11 - #1 - Game, Set, Match!
- 2026-01-11 - #2 - Nerd Trivia
