| エラトステネスの篩い | Sieve of Eratstenes | T.Nishikawa | Articles | SRC | ||
| 数の分割 | Partition number | G.Suzuki T.Nishikawa Y.Nakano N.Yamashita M.Shimura | Articles(1) Articles(2) Articles(3) Articles(4) Articles(5) Articles(6) Articles(7) | SRC | MAN | LZH |
| 4 Oranges | Partition number | G.Suzuki | PDF(English) |
| (数の分割の応用) 数と配分 | M.Shimura |
| カプレカー数 | Kaprekar number | T.Nishikawa M.Shimura | Articles(1) Articles(2) | SRC | MAN | LZH |
| クロスプログラム | Cross program | T.Nishikawa | Articles | SRC | MAN | LZH |
| 数独 | Sudoku Number Place | Y.Nakano T.Nishikawa N.Yamashita | Articles(1) Articles(2) Articles(3) Articles(4) Articles(5) | SRC | MAN | LZH |
| 数独(シャドウ付) | Sudoku(Herald type) | M.Shimura | Articles | SRC | MAN | LZH |
| ハノイの塔 | Tower of Hanoi | Y.Nakano T.Nishikawa N.Yamashita J.Takeuchi | Articles | SRC | MAN | LZH |