Ngoai Sudoku co dien: 8 bien the thu vi nen thu

The gioi ngoai luoi 9x9

Neu ban yeu sudoku co dien, ban se thich thu kham pha nhieu bien the. Moi bien the them quy tac moi, rang buoc moi hoac hinh dang luoi moi.

1. Killer Sudoku

Cach choi

Ket hop sudoku voi kakuro. Luoi chia thanh "long" co tong. So trong long khong duoc lap. Khong co so cho san — chi co tong cua long.

Meo chien luoc

Bat dau voi long chi co mot to hop co the. Dung "quy tac 45" — moi hang, cot va hop tong la 45.

2. Diagonal Sudoku (Sudoku X)

Cach choi

Them mot quy tac: hai duong cheo chinh cung phai chua 1-9.

Meo chien luoc

O trung tam bi rang buoc nhieu nhat — thuoc hang, cot, hop va ca hai duong cheo.

3. Irregular Sudoku (Jigsaw)

Cach choi

Thay hop 3x3 bang vung hinh dang bat quy tac. Quy tac hang va cot giu nguyen.

Meo chien luoc

Chu y ranh gioi vung. Vung co hinh dang bat thuong thuong cho co hoi giai doc dao.

4. Samurai Sudoku

Cach choi

Nam luoi 9x9 chong len nhau hinh chu thap. Luoi trung tam chia se hop 3x3 voi bon luoi ngoai.

Meo chien luoc

Bat dau o vung chong lap — bi rang buoc nhieu nhat.

5. Hyper Sudoku

Cach choi

Them bon vung 3x3 phu chong len hop tieu chuan.

Meo chien luoc

O thuoc ca hop tieu chuan va hop hyper co them rang buoc, la diem bat dau tot.

6. Windoku

Cach choi

Tuong tu Hyper nhung bon vung phu vi tri khac, tao mau cua so.

Meo chien luoc

Tan dung rang buoc phu tu vung cua so.

7. Greater Than Sudoku

Cach choi

Co dau bat dang thuc (< va >) giua cac o ke nhau. Doi khi khong co so cho san.

Meo chien luoc

Noi chuoi bat dang thuc de xac dinh pham vi. Neu A > B > C, A toi da 8, B toi da 7, C toi da 6.

8. Even-Odd Sudoku

Cach choi

Mot so o duoc danh dau chan (2, 4, 6, 8) hoac le (1, 3, 5, 7, 9).

Meo chien luoc

O chan chi co the la 2, 4, 6 hoac 8 — loai bo nam ung vien ngay.

Mo rong tam nhin cau do

Moi bien the mang den thu thach moi. Tren Sudoku Rival, sudoku co dien van la chuan thi dau, nhung ky nang tu bien the lam ban manh hon.