The New Sudoku Players' Forum

[OscarSeurat]

Hi,
Here is a rather unusual book of classic Sudoku puzzles whose entries form pictures of various objects. Each of the 101 puzzles is accompanied by a short essay on the depicted item (e.g., house, snake, lock, peace sign, etc.). Since the recognizability of the patterns was the main focus of the authors, the majority of the grids are easy or medium, and the puzzles spread randomly on the difficulty spectrum. The members of this expert forum would probably find 10% of the puzzles difficult. Below is one such puzzle (the “Tortoise” from the “Animals” chapter). Overall, a nice gift to raise interest in this surprisingly rich game.

Oscar

Code: Select all

*-----------*
|...|97.|...|
|...|.2.|59.|
|...|836|.1.|
|---+---+---|
|..8|...|6..|
|.3.|...|451|
|.4.|...|9.3|
|---+---+---|
|97.|..4|...|
|..2|68.|...|
|..3|...|...|
*-----------*


Code: Select all

...97........2.59....836.1...8...6...3....451.4....9.397...4.....268......3......


[champagne]

some examples of tortoise
could seem tougher (skfr rating 9.0) but ...

...42........8.61....193.7...2...3...4....892.3....1.596...2.....735......8......;9.0;1.2;1.2
...42........8.61....169.7...2...8...1....792.4....1.578...2.....951......6......;9.0;1.2;1.2
...42........7.61....981.7...3...1...7....962.4....8.568...3.....956......7......;9.0;1.2;1.2
...42........7.61....183.7...6...3...4....962.2....1.596...7.....725......8......;9.0;1.2;1.2
...21........6.41....948.5...4...9...3....571.9....8.268...5.....983......7......;9.0;1.2;1.2
...12........5.41....786.5...8...7...3....942.9....6.168...9.....983......7......;9.0;1.2;1.2

[champagne]

these one really tougher

it seems difficult with this pattern to get high ED. Should be investigated more to see if it is worth to have it in the game

...12........9.14....564.7...2...4...1....682.5....9.339...2.....597......8......;9.1;1.2;1.2
...12........3.94....456.3...2...7...8....512.6....4.317...8.....679......3......;9.1;1.2;1.2
...12........3.74....456.3...2...8...9....512.6....4.318...9.....687......3......;9.1;1.2;1.2
...12........3.15....456.7...6...3...9....562.8....4.776...3.....394......1......;9.1;1.2;1.2
...12........3.15....456.7...6...3...8....562.9....4.776...3.....384......1......;9.1;1.2;1.2
...12........3.15....456.7...6...3...4....562.9....4.776...3.....389......1......;9.1;1.2;1.2
...12........3.15....456.7...6...3...4....562.8....4.776...3.....398......1......;9.1;1.2;1.2
...12........3.14....564.7...2...4...1....692.5....3.883...2.....537......9......;9.1;1.2;1.2
...12........3.14....546.7...6...3...9....462.8....5.776...3.....395......1......;9.1;1.2;1.2
...12........3.14....546.7...6...3...9....462.8....5.776...3.....395......1......;9.1;1.2;1.2
...12........3.14....546.7...6...3...9....462.8....5.776...3.....395......1......;9.1;1.2;1.2
...12........3.14....546.7...6...3...8....462.9....5.776...3.....385......1......;9.1;1.2;1.2
...12........3.14....546.7...6...3...5....462.9....5.776...3.....389......1......;9.1;1.2;1.2
...12........3.14....546.7...6...3...5....462.9....5.776...3.....389......1......;9.1;1.2;1.2
...12........3.14....546.7...6...3...5....462.8....5.776...3.....398......1......;9.1;1.2;1.2
...12........3.14....546.7...6...3...5....462.8....5.776...3.....398......1......;9.1;1.2;1.2
...12........3.14....546.7...6...3...5....462.8....5.776...3.....398......1......;9.1;1.2;1.2

[1to9only]

it seems difficult with this pattern to get high ED.

I think SudokuExplainer's first hint will always be r1c6=5, so all puzzles will be rated /1.2/1.2
hasty thoughts, my statement is incorrect, see next post.

[champagne]

it seems difficult with this pattern to get high ED.

I think SudokuExplainer's first hint will always be r1c6=5, so all puzzles will be rated /1.2/1.2

in this small list yes, but other puzzles do have a higher serate ED

and what about the first list

[tarek]

Lunatic has a nice Pattern based generator available at http://www.mpq-software.be/software/generator.html

Code: Select all

     2 8   1 7     
   8           1   
 7   9 5   4 8   6
 5   3 1   8 2   4
                   
 9   1       3   7
 1     7 5 9     8
   9           7   
     7 2   6 4     

tarek

[masterH]

Hi,
Here is a rather unusual book of classic Sudoku puzzles whose entries form pictures of various objects. Each of the 101 puzzles is accompanied by a short essay on the depicted item (e.g., house, snake, lock, peace sign, etc.). Since the recognizability of the patterns was the main focus of the authors, the majority of the grids are easy or medium, and the puzzles spread randomly on the difficulty spectrum. The members of this expert forum would probably find 10% of the puzzles difficult. Below is one such puzzle (the “Tortoise” from the “Animals” chapter). Overall, a nice gift to raise interest in this surprisingly rich game.

Oscar

Code: Select all

*-----------*
|...|97.|...|
|...|.2.|59.|
|...|836|.1.|
|---+---+---|
|..8|...|6..|
|.3.|...|451|
|.4.|...|9.3|
|---+---+---|
|97.|..4|...|
|..2|68.|...|
|..3|...|...|
*-----------*


Code: Select all

...97........2.59....836.1...8...6...3....451.4....9.397...4.....268......3......


More puzzles like this please.