1st UKPA Sudoku Championship

Transcription

1 st UKPA Sudoku Championship COMPETITION PUZZLES Saturday 6th Sunday 7th November 00 Championship Duration: hours. Puzzles designed by Tom Collyer # - Classic Sudoku ( 4) 0pts #8 - No Touch Sudoku 5pts # - Diagonal Sudoku 0pts #9 - Toroidal Sudoku 5pts #3 - Irregular Sudoku 0pts #0 - Sudoku Islands 0pts #4 - Non-consecutive Sudoku 0pts # - Touchy Sudoku 0pts #5 - Surplus Sudoku 0pts # - Sudokurve 5pts #6 - Tens Sudoku 0pts #3 - Killer Sudoku 30pts #7 - No Tens Sudoku 5pts #4 - Arrow Sudoku 30pts Total: 40pts + time bonus of pts for every minute saved.

2 #A: CLASSIC SUDOKU [0 points] once in each row, column and marked 3 3 box. 0 Points will only be awarded for correct solutions to all four puzzles: a, b, c and d. Answer key: 6 th row. Championship puzzles UK Puzzle Association 00. All rights reserved.

3 #B: CLASSIC SUDOKU [0 points] once in each row, column and marked 3 3 box. 0 Points will only be awarded for correct solutions to all four puzzles: a, b, c and d. Answer key: 6 th row. Championship puzzles UK Puzzle Association 00. All rights reserved.

4 #C: CLASSIC SUDOKU [0 points] once in each row, column and marked 3 3 box. 0 Points will only be awarded for correct solutions to all four puzzles: a, b, c and d. Answer key: nd row. Championship puzzles UK Puzzle Association 00. All rights reserved.

5 #D: CLASSIC SUDOKU [0 points] once in each row, column and marked 3 3 box. 0 Points will only be awarded for correct solutions to all four puzzles: a, b, c and d. Answer key: 9th row. Championship puzzles UK Puzzle Association 00. All rights reserved.

6 #: DIAGONAL SUDOKU [0 points] once in each row, column and marked 3 3 box. Additionally, the digits -9 appear in each of the marked main diagonals. st answer key: 7 th row. nd answer key: 9 th column. Championship puzzles UK Puzzle Association 00. All rights reserved.

7 #3: IRREGULAR SUDOKU [0 points] once in each row, column and marked 9-cell region. st answer key: 5 th row. nd answer key: nd column. Championship puzzles UK Puzzle Association 00. All rights reserved.

8 #4: NON-CONSECUTIVE SUDOKU [0 points] Place a digit from -9 in each cell in each cell such that each digit appears exactly once in each row, column and marked 3 3 box. Cells sharing a common edge may not contain consecutive digits. st answer key: 6 th row. nd answer key: 6 th column. Championship puzzles UK Puzzle Association 00. All rights reserved.

9 #5: SURPLUS SUDOKU [0 points] once in each row and column, and at least once in each of the 8 marked 0-cell regions. st answer key: 5 th row. nd answer key: 3 rd column. Championship puzzles UK Puzzle Association 00. All rights reserved.

10 #6: TENS SUDOKU [0 points] once in each row, column and marked 3 3 box. Where a pair of cells with a common edge contain digits summing to 0, both cells are shaded. If a cell is not shaded, then the sum of its digit and any digit contained in any other cell with an adjacent edge is not equal to 0. st answer key: 3 rd row. nd answer key: 5 th column. Championship puzzles UK Puzzle Association 00. All rights reserved.

11 #7: NO-TENS SUDOKU [5 points] once in each row, column and marked 3 3 box. Digits in cells with a common edge may not sum to 0. st answer key: 9 th row. nd answer key: 8 th column. Championship puzzles UK Puzzle Association 00. All rights reserved.

12 #8: NO TOUCH SUDOKU [5 points] once in each row, column and marked 3 3 box. Digits in cells that touch diagonally are not equal. st answer key: st row. nd answer key: 6 th column. Championship puzzles UK Puzzle Association 00. All rights reserved.

13 #9: TOROIDAL SUDOKU [5 points] once in each row, column and marked 9 cell region. Additionally, some of the outlined regions will wrap between the top and bottom edges, and/or the left and right edges of the grid. st answer key: 6 th row. nd answer key: 3 rd column. Championship puzzles UK Puzzle Association 00. All rights reserved.

14 #0: SUDOKU ISLANDS [0 points] Place the digits -5 in the grid such that each digit appears exactly once in each row, column and marked 3 3 box. The remaining cells should be shaded to form islands. Each island contains one numbered grey cell, already given, which represents the size of the island. The unshaded cells form an orthogonally connected region, i.e. you can travel from any unshaded cell to any other by moving vertically or horizontally using only other unshaded cells. There are no blocks of unshaded cells. st answer key: the 5 digits in the 3 rd row. nd answer key: the 5 digits in the 8 th row. Championship puzzles UK Puzzle Association 00. All rights reserved.

15 #: TOUCHY SUDOKU [0 points] Place a digit from -9 in the grid such that each digit appears exactly once in each row, column and marked 3 3 box. Each digit in the grid must have its cell share a common edge with at least one cell containing a consecutive digit. st answer key: 9 th row. nd answer key: 6 th column. Championship puzzles UK Puzzle Association 00. All rights reserved.

16 #: SUDOKURVE [5 points] once in each of the 3 3 boxes and 8 generalised rows. The generalised rows are marked by light curved lines. st answer key: st entirely horizontal row. nd answer key: 3 rd entirely horizontal row. Championship puzzles UK Puzzle Association 00. All rights reserved.

17 #3: KILLER SUDOKU [30 points] once in each row, column and marked 3 3 box. Additional cages are marked with the total sum of the digits they contain. Digits may not repeat within cages. st answer key: 9 th row. nd answer key: 9 th column. Championship puzzles UK Puzzle Association 00. All rights reserved.

18 #4: ARROW SUDOKU [30 points] once in each row, column and marked 3 3 box. Digits in the circled cells are the sum of the digits in the cells on the arrow leading out from it. Digits may repeat on these arrows. st answer key: 3 rd row. nd answer key: 4 th column. Championship puzzles UK Puzzle Association 00. All rights reserved.