Hard Sudoku

In this section, selected the most hard-solvable sudoku with the number of empty cells, more than 57, the level of which is estimated visitors to the site and built-in analyzer Sudoku as "complicated." Typically, these puzzles can not be solved by standard methods.

Mission "Reasons to love Sudoku"

2019-04-16

Bruno

Mission "Hardcore multi-Sudoku"

2018-11-25

Memo

100

Mission "Multistake - construction accident"

2019-04-02

Lysva

Found Sudoku: 221

Pages: 1 2 3 4 5 6 7 8

	Sudoku №19504 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 2.04 Added: 2017-12-30 Solved times: 310 Speed: 48m.8s.		Sudoku №19413 Empty cells: 59 Rating: Complexity (usr): Complexity (cmp): 2.26 Added: 2017-12-04 Solved times: 277 Speed: 39m.14s.
	Sudoku №17742 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 5.48 Added: 2017-07-02 Solved times: 172 Speed: 1h.1m.		Sudoku №17788 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.16 Added: 2017-07-02 Solved times: 245 Speed: 1h.8m.
	Sudoku №18093 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 5.26 Added: 2017-07-02 Solved times: 186 Speed: 1h.1m.		Sudoku №17326 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.87 Added: 2017-07-01 Solved times: 227 Speed: 43m.44s.
	Sudoku №17425 Empty cells: 59 Rating: Complexity (usr): Complexity (cmp): 4.77 Added: 2017-07-01 Solved times: 200 Speed: 48m.24s.		Sudoku №17606 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.20 Added: 2017-07-01 Solved times: 226 Speed: 56m.18s.
	Sudoku №17034 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.31 Added: 2017-06-30 Solved times: 233 Speed: 43m.33s.		Sudoku №17230 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.79 Added: 2017-06-30 Solved times: 181 Speed: 1h.13m.
	Sudoku №16696 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.93 Added: 2017-06-12 Solved times: 296 Speed: 50m.33s.		Sudoku №16668 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 5.74 Added: 2017-06-09 Solved times: 192 Speed: 1h.1m.
	Sudoku №14511 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 5.36 Added: 2016-10-30 Solved times: 167 Speed: 54m.17s.		Sudoku №14481 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.82 Added: 2016-10-26 Solved times: 291 Speed: 55m.9s.
	Sudoku №14449 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 3.87 Added: 2016-10-22 Solved times: 274 Speed: 50m.47s.		Sudoku №14312 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.44 Added: 2016-10-08 Solved times: 297 Speed: 40m.8s.
	Sudoku №14319 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 5.19 Added: 2016-10-08 Solved times: 209 Speed: 1h.2m.		Sudoku №14294 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 5.68 Added: 2016-10-07 Solved times: 249 Speed: 1h.32m.
	Sudoku №14276 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.89 Added: 2016-10-05 Solved times: 237 Speed: 50m.1s.		Sudoku №14245 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.96 Added: 2016-10-03 Solved times: 226 Speed: 53m.24s.
	Sudoku №14219 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 5.20 Added: 2016-10-02 Solved times: 226 Speed: 1h.9m.		Sudoku №14210 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.95 Added: 2016-10-01 Solved times: 160 Speed: 1h.25m.
	Sudoku №14178 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.51 Added: 2016-09-29 Solved times: 205 Speed: 56m.53s.		Sudoku №14135 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 5.01 Added: 2016-09-26 Solved times: 246 Speed: 48m.53s.
	Sudoku №13727 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 3.95 Added: 2016-09-01 Solved times: 204 Speed: 41m.8s.		Sudoku №13741 Empty cells: 59 Rating: Complexity (usr): Complexity (cmp): 5.61 Added: 2016-09-01 Solved times: 231 Speed: 41m.19s.
	Sudoku №13649 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 5.24 Added: 2016-08-28 Solved times: 179 Speed: 58m.55s.		Sudoku №13560 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 3.60 Added: 2016-08-23 Solved times: 228 Speed: 38m.40s.
	Sudoku №13531 Empty cells: 58 Rating: Complexity (usr): Complexity (cmp): 4.79 Added: 2016-08-22 Solved times: 199 Speed: 1h.21m.		Sudoku №13511 Empty cells: 59 Rating: Complexity (usr): Complexity (cmp): 3.76 Added: 2016-08-21 Solved times: 240 Speed: 44m.51s.