Skyscraper Sudoku
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Kesalahan
0/3
Skor
-
Waktu
00:00
Kemajuan0%
Mudah · Sudoku Pencakar Langit
Ganti kesulitan di atas ↑
Cara bermain Skyscraper Sudoku
Aturan standar Sudoku berlaku. Setiap angka petunjuk biru memberi tahu Anda berapa banyak digit yang terlihat saat melihat ke dalam grid dari tepi tersebut — sebuah digit terlihat hanya jika lebih besar dari semua digit sebelumnya dari arah itu.
Panduan lengkap →
Petunjuk luar menunjukkan berapa banyak 'bangunan' yang terlihat dari tepi itu.
Skyscraper Sudoku Mudah
Skyscraper Sudoku Sedang
Skyscraper Sudoku Sulit
Skyscraper Sudoku Ahli
Apa itu Skyscraper Sudoku?
Skyscraper Sudoku membayangkan setiap digit sebagai gedung dengan tinggi tersebut. Petunjuk di luar kisi menunjukkan berapa banyak gedung yang dapat Anda lihat dari tepi tersebut ke dalam — gedung yang lebih tinggi menghalangi semua gedung yang lebih pendek di belakangnya. Petunjuk 1 berarti gedung pertama harus 9. Petunjuk 9 berarti gedung-gedung tersebut diatur dalam urutan yang meningkat secara ketat (1,2,3,4,5,6,7,8,9). Varian ini membutuhkan logika Sudoku dan penalaran permutasi.
Sekilas
| Jenis kendala | Petunjuk Luar |
| Petunjuk khas | 4–10 clue values |
| Peringkat kesulitan | ★★★★☆ 4/5 |
| Rata-rata waktu pemecahan — Mudah | 12 mnt |
| Rata-rata waktu pemecahan — Sedang | 25 mnt |
| Rata-rata waktu pemecahan — Sulit | 50 mnt |
| Rata-rata waktu pemecahan — Ahli | 80 mnt |
Cara Memecahkan Skyscraper Sudoku
| Teknik | Apa yang dilakukannya | Level |
|---|---|---|
| Clue 1 Forces 9 First | A visibility clue of 1 means the first building from that edge must be a 9. All shorter buildings behind it are hidden. | Lanjutan |
| Clue 9 Forces Ascending Order | A clue of 9 means all buildings are visible, so digits are in strictly ascending order from that edge: 1, 2, 3, 4, 5, 6, 7, 8, 9. | Lanjutan |
| Permutation Enumeration | For each clue value V, enumerate all permutations of 1–9 that give exactly V visible buildings. Cross-reference opposite-edge clues. | Lanjutan |
| 9 Always Visible | The digit 9 is always visible from either edge. The digit 8 is visible only if it appears before any 9 from that edge. | Lanjutan |
| Multi-Edge Constraint | Combine the clue from one edge with the opposite edge's clue. Both must be simultaneously satisfiable. | Lanjutan |
Waktu Pemecahan Rata-rata
Mudah
12 mnt
Sedang
25 mnt
Sulit
50 mnt
Ahli
80 mnt
Pertanyaan yang Sering Diajukan
Apa itu Skyscraper Sudoku?
Skyscraper Sudoku is a variant where numbers appear outside the grid on all four sides. Each number tells you how many distinct 'buildings' (digits) are visible when looking into that row or column from that side. Taller buildings hide shorter ones behind them — a larger digit blocks any smaller digit placed further into the row.
How does visibility work in Skyscraper Sudoku?
Imagine the digits in a row as buildings of different heights. Looking from one end, you can see a building only if no taller building stands between you and it. A clue of 1 means only the first building is visible, so it must be the tallest (digit 9). A clue of 9 means all buildings are visible, so the row must be in ascending order from that side.
What do extreme clue values tell me?
A clue of 1 means the first cell from that side holds a 9 — it blocks everything else. A clue of 9 means the row or column is in strictly ascending order from that direction (1,2,3,4,5,6,7,8,9). Both are immediately actionable. Mid-range clues require enumerating valid permutations.
Is Skyscraper Sudoku harder than regular Sudoku?
Yes, generally. Skyscraper clues require enumerating valid digit permutations for each row and column, which is more combinatorially intensive than classic Sudoku elimination. Easy puzzles are accessible; hard and expert puzzles require tracking visibility across multiple rows and columns simultaneously.
What is the best first strategy for Skyscraper Sudoku?
Start with clues of 1 and 9 — they immediately fix a digit or fully determine the order of a row. Then look for clues of 2, which constrain the position of the 9 significantly. Combine skyscraper deductions with standard Sudoku box and row/column scans.
How long does Skyscraper Sudoku take to solve?
Easy puzzles take 8–20 minutes. Medium puzzles run 20–40 minutes. Hard puzzles average 40–75 minutes and expert puzzles often exceed 90 minutes. Fast solvers develop the ability to enumerate valid visibility permutations quickly without writing them all out.