Sudoku Checker

March 31, 2022

Version 1.3.3 has the following modifications to 1.3.2. ・ The recognition sensitivity of the Sudoku technique called XY-Wing is increased. ・ The recognition sensitivity of the Sudoku technique called XYZ-Wing is increased. ・ We are increasing the recognition sensitivity of the Sudoku technique called the Hidden Triple. ・ We are increasing the recognition sensitivity of the Sudoku technique called skyscraper. ・ The recognition sensitivity of the Sudoku technique called swordfish is increased. Version 1.3.2 fixes the following bugs in 1.3.1. -Sometimes I couldn't recognize the Sudoku technique called X-Wing. -The X-Wing level and the Hidden Triples level are displayed in the difficulty nest display dialog. Version 1.3.1 fixes the following bugs in 1.3.0. -Sometimes it freezes while entering numerical values. Version 1.3.x has revised the calculation logic of the difficulty level. Previously (up to Version 1.2.x), the difficulty level was high when the number of hints was small, or the difficulty level was less than 300 even though advanced techniques were required. Therefore, the calculation logic is revised. The basic functions are the same as before. You can also call the calculation result of the past calculation logics.

January 23, 2022

Version 1.3.2 fixes the following bugs in 1.3.1. -Sometimes I couldn't recognize the Sudoku technique called X-Wing. -The X-Wing level and the Hidden Triples level are displayed in the difficulty nest display dialog. Version 1.3.1 fixes the following bugs in 1.3.0. -Sometimes it freezes while entering numerical values. Version 1.3.x has revised the calculation logic of the difficulty level. Previously (up to Version 1.2.x), the difficulty level was high when the number of hints was small, or the difficulty level was less than 300 even though advanced techniques were required. Therefore, the calculation logic is revised. The basic functions are the same as before. You can also call the calculation result of the past calculation logics.

December 30, 2021

Version 1.3.1 fixes the following bugs in 1.3.0. -Sometimes it hangs (freezes) while entering numerical values. In Version1.3, the calculation logic of the difficulty level has been revised. Previously (up to Version 1.2.x), the difficulty level was high when the number of hints was small, or the difficulty level was less than 300 even though advanced techniques were required. Therefore, the calculation logic is revised. The basic functions are the same as before. You can also call the calculation result of the past calculation logic.

December 27, 2021

In Version1.3, the calculation logic of the difficulty level has been revised. Previously (up to Version 1.2.x), the difficulty level was high when the number of hints was small, or the difficulty level was less than 300 even though advanced techniques were required. Therefore, the calculation logic is revised. The basic functions are the same as before. You can also call the calculation result of the past calculation logic.

October 7, 2021

Version 1.2.4 makes the following changes to Version 1.2.3. -Changed to display "advanced technique level" and "complexity index" in the difficulty level display dialog. -The "Clear" button in the dialog when a contradiction occurs has been eliminated.

June 14, 2021

Version 1.2.3 implements the following modifications to Version 1.2.2. -The re-verification result in the old difficulty calculation formula has been changed to be listed as "for Bigginer". There is no change in the difficulty calculation logic.

February 24, 2021

Version 1.2.2 implements the following modifications to Version 1.2.1. -Supports iOS 14 advertisement display.

January 15, 2021

Version 1.1 adds the following features: -The advertisement display has been revised to support iOS14. -Fixed the problem that the background color disappears when initializing in diagonal mode.

September 17, 2019

There are a few minor bugs in the decision logic that are fixed. At the same time, we are reviewing the “Difficulty level judgment logic” By selecting “Revalidate with old difficulty formula” in the difficulty level display dialog, you can see the old difficulty level.

May 28, 2019

The installation target version has been extended to iOS 9. The size of the input character is increased, and the character derived by it is reduced. When there are multiple solutions, the [Verify] function makes it easy to see the relevant places and possible numbers.