Split (7)

4x4 · 2k rows

task_name string	initial_board string	solution string	puzzle_id string	title string	rules string	initial_observation string	rows int64	cols int64	visual_elements string	description string
4x4_sudoku_100	1.4.4.213....1..	1243432134122134	Basic 4x4 Sudoku 100	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	1 . 4 . 4 . 2 1 3 . . . . 1 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_101	.2..3........12.	1234341223414123	Basic 4x4 Sudoku 101	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 2 . . 3 . . . . . . . . 1 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_102	.2.....41....4.1	4213312413422431	Basic 4x4 Sudoku 102	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 2 . . . . . 4 1 . . . . 4 . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_103	..3.3241.3..1...	4132324123141423	Basic 4x4 Sudoku 103	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 3 . 3 2 4 1 . 3 . . 1 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_104	3.2.21..4......3	3421213443121243	Basic 4x4 Sudoku 104	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	3 . 2 . 2 1 . . 4 . . . . . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_105	2.4.....3....21.	2341143231244213	Basic 4x4 Sudoku 105	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 . 4 . . . . . 3 . . . . 2 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_106	.32......4...13.	4321124334122134	Basic 4x4 Sudoku 106	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 3 2 . . . . . . 4 . . . 1 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_107	..1..34.34.1.1.4	4213134234212134	Basic 4x4 Sudoku 107	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 1 . . 3 4 . 3 4 . 1 . 1 . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_108	...1.3.....221..	4231132434122143	Basic 4x4 Sudoku 108	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 1 . 3 . . . . . 2 2 1 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_109	.34..2.....4241.	1342423131242413	Basic 4x4 Sudoku 109	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 3 4 . . 2 . . . . . 4 2 4 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_110	2..3..21.23.4...	2143342112344312	Basic 4x4 Sudoku 110	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 . . 3 . . 2 1 . 2 3 . 4 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_111	...2.....4..2..3	4312123434212143	Basic 4x4 Sudoku 111	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 2 . . . . . 4 . . 2 . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_112	2.1..3.4...24...	2413132431424231	Basic 4x4 Sudoku 112	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 . 1 . . 3 . 4 . . . 2 4 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_113	..4..2.....32...	3142423114232314	Basic 4x4 Sudoku 113	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 4 . . 2 . . . . . 3 2 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_114	12.4..21..433...	1234432121433412	Basic 4x4 Sudoku 114	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	1 2 . 4 . . 2 1 . . 4 3 3 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_115	..34.4...2...3.1	2134341212434321	Basic 4x4 Sudoku 115	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 3 4 . 4 . . . 2 . . . 3 . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_116	...21..3.4..2..4	4312124334212134	Basic 4x4 Sudoku 116	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 2 1 . . 3 . 4 . . 2 . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_117	..12.....3.1.134	3412124343212134	Basic 4x4 Sudoku 117	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 1 2 . . . . . 3 . 1 . 1 3 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_118	.1..2.41142.3...	4132234114233214	Basic 4x4 Sudoku 118	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 1 . . 2 . 4 1 1 4 2 . 3 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_119	.23....4.1..2...	4231132431422413	Basic 4x4 Sudoku 119	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 2 3 . . . . 4 . 1 . . 2 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_120	.2.13.....4.....	4231312413422413	Basic 4x4 Sudoku 120	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 2 . 1 3 . . . . . 4 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_121	..1212.4..2....1	3412123441232341	Basic 4x4 Sudoku 121	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 1 2 1 2 . 4 . . 2 . . . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_122	..2..43......34.	3124243142131342	Basic 4x4 Sudoku 122	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 2 . . 4 3 . . . . . . 3 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_123	..2....44....2.3	3421213443121243	Basic 4x4 Sudoku 123	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 2 . . . . 4 4 . . . . 2 . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_124	.31.1.3...4..1.3	2314143232414123	Basic 4x4 Sudoku 124	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 3 1 . 1 . 3 . . . 4 . . 1 . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_125	.4.3...41.......	2413312413424231	Basic 4x4 Sudoku 125	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 4 . 3 . . . 4 1 . . . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_126	.3.4.4233......2	2314142332414132	Basic 4x4 Sudoku 126	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 3 . 4 . 4 2 3 3 . . . . . . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_127	3.244..324...3..	3124421324311342	Basic 4x4 Sudoku 127	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	3 . 2 4 4 . . 3 2 4 . . . 3 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_128	231.4..21.2..2..	2314413214233241	Basic 4x4 Sudoku 128	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 3 1 . 4 . . 2 1 . 2 . . 2 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_129	..144..3.....24.	2314412314323241	Basic 4x4 Sudoku 129	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 1 4 4 . . 3 . . . . . 2 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_130	.......22.1.3..4	4231134224133124	Basic 4x4 Sudoku 130	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . . . . . 2 2 . 1 . 3 . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_131	4.32.21414......	4132321414232341	Basic 4x4 Sudoku 131	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 . 3 2 . 2 1 4 1 4 . . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_132	24.31..431...2..	2413132431424231	Basic 4x4 Sudoku 132	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 4 . 3 1 . . 4 3 1 . . . 2 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_133	1.23.3..4.31...2	1423231442313142	Basic 4x4 Sudoku 133	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	1 . 2 3 . 3 . . 4 . 3 1 . . . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_134	.....2...32.2..1	3142421313242431	Basic 4x4 Sudoku 134	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . . . 2 . . . 3 2 . 2 . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_135	....3.14.34.2...	4123321413422431	Basic 4x4 Sudoku 135	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . . 3 . 1 4 . 3 4 . 2 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_136	.....34......413	4231134231242413	Basic 4x4 Sudoku 136	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . . . 3 4 . . . . . . 4 1 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_137	2......34....1..	2314142342313142	Basic 4x4 Sudoku 137	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 . . . . . . 3 4 . . . . 1 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_138	...3342.21...3..	1243342121344312	Basic 4x4 Sudoku 138	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 3 3 4 2 . 2 1 . . . 3 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_139	..41.4.....2.214	2341142341323214	Basic 4x4 Sudoku 139	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 4 1 . 4 . . . . . 2 . 2 1 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_140	..1...2314..2...	3214412314322341	Basic 4x4 Sudoku 140	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 1 . . . 2 3 1 4 . . 2 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_141	24.1.3.4.1.2...3	2431132431424213	Basic 4x4 Sudoku 141	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 4 . 1 . 3 . 4 . 1 . 2 . . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_142	...2.23..31...2.	3142423123141423	Basic 4x4 Sudoku 142	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 2 . 2 3 . . 3 1 . . . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_143	3.....4.1.....2.	3412214312344321	Basic 4x4 Sudoku 143	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	3 . . . . . 4 . 1 . . . . . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_144	.143.3.23.2.....	2143431234211234	Basic 4x4 Sudoku 144	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 1 4 3 . 3 . 2 3 . 2 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_145	431..24..43.....	4312124324313124	Basic 4x4 Sudoku 145	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 3 1 . . 2 4 . . 4 3 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_146	.1.33.12......31	2143341213244231	Basic 4x4 Sudoku 146	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 1 . 3 3 . 1 2 . . . . . . 3 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_147	..141.23.1..4..1	2314142331424231	Basic 4x4 Sudoku 147	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 1 4 1 . 2 3 . 1 . . 4 . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_148	4..3..2.3.....31	4213132431422431	Basic 4x4 Sudoku 148	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 . . 3 . . 2 . 3 . . . . . 3 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_149	..2.23..1..4....	4123234112343412	Basic 4x4 Sudoku 149	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 2 . 2 3 . . 1 . . 4 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_150	..4.1....3.4..3.	3241142323144132	Basic 4x4 Sudoku 150	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 4 . 1 . . . . 3 . 4 . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_151	31..2.1....11.24	3142241342311324	Basic 4x4 Sudoku 151	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	3 1 . . 2 . 1 . . . . 1 1 . 2 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_152	123..4..41..2.4.	1234341241232341	Basic 4x4 Sudoku 152	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	1 2 3 . . 4 . . 4 1 . . 2 . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_153	2..3....3..4.4.2	2143432132141432	Basic 4x4 Sudoku 153	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 . . 3 . . . . 3 . . 4 . 4 . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_154	....12.34..2..3.	3421124343122134	Basic 4x4 Sudoku 154	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . . 1 2 . 3 4 . . 2 . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_155	12.443.2....2..3	1234431234212143	Basic 4x4 Sudoku 155	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	1 2 . 4 4 3 . 2 . . . . 2 . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_156	.12.3...14...31.	4123324114322314	Basic 4x4 Sudoku 156	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 1 2 . 3 . . . 1 4 . . . 3 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_157	.2.3......1....2	1243342123144132	Basic 4x4 Sudoku 157	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 2 . 3 . . . . . . 1 . . . . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_158	..4..32..1......	1243432121343412	Basic 4x4 Sudoku 158	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 4 . . 3 2 . . 1 . . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_159	.3.44.3..421....	2314413234211243	Basic 4x4 Sudoku 159	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 3 . 4 4 . 3 . . 4 2 1 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_160	1.....2..4..2.4.	1234432134122143	Basic 4x4 Sudoku 160	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	1 . . . . . 2 . . 4 . . 2 . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_161	.2...43....3..4.	3214143241232341	Basic 4x4 Sudoku 161	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 2 . . . 4 3 . . . . 3 . . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_162	4.3....2.3..2...	4231314213242413	Basic 4x4 Sudoku 162	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 . 3 . . . . 2 . 3 . . 2 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_163	4..3324...3...14	4123324114322314	Basic 4x4 Sudoku 163	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 . . 3 3 2 4 . . . 3 . . . 1 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_164	.4..2.1....1..3.	1423231432414132	Basic 4x4 Sudoku 164	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 4 . . 2 . 1 . . . . 1 . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_165	.1..42.1.....423	3142423123141423	Basic 4x4 Sudoku 165	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 1 . . 4 2 . 1 . . . . . 4 2 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_166	..34....2.4.41..	1234341223414123	Basic 4x4 Sudoku 166	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 3 4 . . . . 2 . 4 . 4 1 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_167	41...2...341...3	4132321423411423	Basic 4x4 Sudoku 167	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 1 . . . 2 . . . 3 4 1 . . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_168	..1.2.4.4....2..	3412214343211234	Basic 4x4 Sudoku 168	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 1 . 2 . 4 . 4 . . . . 2 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_169	.1.2..41....13..	4132324124131324	Basic 4x4 Sudoku 169	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 1 . 2 . . 4 1 . . . . 1 3 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_170	...1..3......32.	3241413224131324	Basic 4x4 Sudoku 170	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 1 . . 3 . . . . . . 3 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_171	.2..1....1.33...	4231132421433412	Basic 4x4 Sudoku 171	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 2 . . 1 . . . . 1 . 3 3 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_172	..1......2...3.2	2413312442311342	Basic 4x4 Sudoku 172	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 1 . . . . . . 2 . . . 3 . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_173	23...1.33...123.	2341412334121234	Basic 4x4 Sudoku 173	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 3 . . . 1 . 3 3 . . . 1 2 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_174	...2..3..3.4..2.	3142423123141423	Basic 4x4 Sudoku 174	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 2 . . 3 . . 3 . 4 . . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_175	2.31...4..1.134.	2431312442131342	Basic 4x4 Sudoku 175	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 . 3 1 . . . 4 . . 1 . 1 3 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_176	.1....3.......43	3124243143121243	Basic 4x4 Sudoku 176	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 1 . . . . 3 . . . . . . . 4 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_177	...1.243.13.4.1.	3421124321344312	Basic 4x4 Sudoku 177	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 1 . 2 4 3 . 1 3 . 4 . 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_178	...44312.2.3....	2134431212433421	Basic 4x4 Sudoku 178	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 4 4 3 1 2 . 2 . 3 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_179	2....13..2.1....	2314413232411423	Basic 4x4 Sudoku 179	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 . . . . 1 3 . . 2 . 1 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_180	.....3.2....124.	2134431234211243	Basic 4x4 Sudoku 180	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . . . 3 . 2 . . . . 1 2 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_181	4.2.1...3.....4.	4321123434122143	Basic 4x4 Sudoku 181	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 . 2 . 1 . . . 3 . . . . . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_182	243.1.2.3.....13	2431132431424213	Basic 4x4 Sudoku 182	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 4 3 . 1 . 2 . 3 . . . . . 1 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_183	2.3......14.....	2431132431424213	Basic 4x4 Sudoku 183	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 . 3 . . . . . . 1 4 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_184	241......2.14..2	2413132432414132	Basic 4x4 Sudoku 184	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 4 1 . . . . . . 2 . 1 4 . . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_185	.1.334....21...4	2143341243211234	Basic 4x4 Sudoku 185	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 1 . 3 3 4 . . . . 2 1 . . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_186	43....4...3.3.14	4321214314323214	Basic 4x4 Sudoku 186	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 3 . . . . 4 . . . 3 . 3 . 1 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_187	..2....4.342.4..	4123321413422431	Basic 4x4 Sudoku 187	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 2 . . . . 4 . 3 4 2 . 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_188	...4.42.4.1..2..	2134342143121243	Basic 4x4 Sudoku 188	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . 4 . 4 2 . 4 . 1 . . 2 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_189	42.13....4..1.2.	4231314224131324	Basic 4x4 Sudoku 189	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 2 . 1 3 . . . . 4 . . 1 . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_190	3..4.12...4224..	3214412313422431	Basic 4x4 Sudoku 190	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	3 . . 4 . 1 2 . . . 4 2 2 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_191	12...4..4.2....3	1234341243212143	Basic 4x4 Sudoku 191	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	1 2 . . . 4 . . 4 . 2 . . . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_192	..2....42.133.42	4321123424133142	Basic 4x4 Sudoku 192	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . 2 . . . . 4 2 . 1 3 3 . 4 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_193	2.14.132..2....1	2314413214233241	Basic 4x4 Sudoku 193	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	2 . 1 4 . 1 3 2 . . 2 . . . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_194	43..1..3..3.3.12	4321124321343412	Basic 4x4 Sudoku 194	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	4 3 . . 1 . . 3 . . 3 . 3 . 1 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_195	.3....43.1.43..2	4321124321343412	Basic 4x4 Sudoku 195	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 3 . . . . 4 3 . 1 . 4 3 . . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_196	31...4..4...1.3.	3142241343211234	Basic 4x4 Sudoku 196	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	3 1 . . . 4 . . 4 . . . 1 . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_197	.2..3..1..1....4	1243342143122134	Basic 4x4 Sudoku 197	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 2 . . 3 . . 1 . . 1 . . . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_198	.1.4..3.2.1..3..	3124423124131342	Basic 4x4 Sudoku 198	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. 1 . 4 . . 3 . 2 . 1 . . 3 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_199	....2.1.1.2...3.	3142241313244231	Basic 4x4 Sudoku 199	Easy Sudoku	Each row, column, and 2×2 subgrid must contain all digits from 1 to 4 exactly once. Digits cannot be repeated within any row, column, or 2×2 subgrid.	. . . . 2 . 1 . 1 . 2 . . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.

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