Logic puzzle blog by Thomas Vuille. Riddles, brain teasers and thinking challenges.https://puzzles.newtomsoft.com/enhttps://puzzles.newtomsoft.com/en/fivecells0001/https://puzzles.newtomsoft.com/en/fivecells0001/Discover Five Cells, a Nikoli grid division game where each region must contain exactly five cells.Tue, 02 Jun 2026 00:00:00 GMTpuzzleFiveCellsnikolihttps://puzzles.newtomsoft.com/en/countryroad0002/https://puzzles.newtomsoft.com/en/countryroad0002/A classic logic puzzle: three switches, three light bulbs, one visit. Can you find the solution?Mon, 01 Jun 2026 00:00:00 GMTpuzzleCountryRoadclassiquehttps://puzzles.newtomsoft.com/en/countryroad0001/https://puzzles.newtomsoft.com/en/countryroad0001/A classic logic puzzle: three switches, three light bulbs, one visit. Can you find the solution?Sat, 30 May 2026 00:00:00 GMTpuzzleCountryRoadclassiquehttps://puzzles.newtomsoft.com/en/sudoku0001/https://puzzles.newtomsoft.com/en/sudoku0001/A classic logic puzzle: three switches, three light bulbs, one visit. Can you find the solution?Sat, 30 May 2026 00:00:00 GMTpuzzlesudokuclassique