Alastair Chisholm Collection

As a software developer, Alastair spends his time working on logical problems. This fascination with numbers has led him to write several books on Sudoku and Kakuro puzzles. He is based in Edinburgh, Scotland. As a software developer, Alastair spends his time working on logical problems. This fascination with numbers has led him to write several books on Sudoku and Kakuro puzzles. He is based in Edinburgh, Scotland.