Reddit reviews SUDOKU ultrahardcore 1: Intuition schlägt Logik
We found 1 Reddit comments about SUDOKU ultrahardcore 1: Intuition schlägt Logik. Here are the top ones, ranked by their Reddit score.
Give him one of those:
Killer Sudoku ultrahardcore
Sudoku - Intuition schlägt Logik
They are both from a German publisher, but hopefully available in other countries as well. These puzzles are usually very hard and most require AIC/ALS-type techniques to solve.
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Edit: Give him these for now and see how fast he can solve them:
...........38..1.5.7..12.6.6....39...5..8..2...75....4.1.95..4.2.9..45...........
.2...4.978.....1....762.....56.4.8.............9.6.34.....732....5.....337.8...6.
6....8.24.....7..1.5.4..9...189....5.........7....541...9..3.6.5..7.....14.2....3
79.....2....7...8...85124..23.........4.6.2.........41..93487...2...9....7.....94
..9.5..7...83.4...26...7.1.627..........8..........457.7.9...63...1.67...4..7.9..