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_1600	3...2.1....24...	3124241313424231	Basic 4x4 Sudoku 1600	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_1601	....4..3....2.1.	3241412314322314	Basic 4x4 Sudoku 1601	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_1602	..12....42.1....	3412214342311324	Basic 4x4 Sudoku 1602	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	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1603	...41....123.3..	3214143241232341	Basic 4x4 Sudoku 1603	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 . . . . 1 2 3 . 3 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1604	.2.41.23...2..4.	3214142341322341	Basic 4x4 Sudoku 1604	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 3 . . . 2 . . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1605	1..4.413...1..3.	1324241332414132	Basic 4x4 Sudoku 1605	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 1 3 . . . 1 . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1606	.3.44.3.34..1..3	2314413234211243	Basic 4x4 Sudoku 1606	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 . 3 4 . . 1 . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1607	...22.41.1.33...	1432234141233214	Basic 4x4 Sudoku 1607	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 . 4 1 . 1 . 3 3 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1608	..42........14..	3142423123141423	Basic 4x4 Sudoku 1608	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 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1609	....3..4241...4.	4231312424131342	Basic 4x4 Sudoku 1609	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 1 . . . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1610	42...1.4...113..	4213312424311342	Basic 4x4 Sudoku 1610	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 . 4 . . . 1 1 3 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1611	41.3.3.1..3....4	4123234114323214	Basic 4x4 Sudoku 1611	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 . 3 . 1 . . 3 . . . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1612	.4..13..4.2332..	2431134241233214	Basic 4x4 Sudoku 1612	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 . 2 3 3 2 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1613	.1.4..2.3..2....	2134432134121243	Basic 4x4 Sudoku 1613	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 . 3 . . 2 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1614	1..2.2..23.4.1.3	1432324123144123	Basic 4x4 Sudoku 1614	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 . 2 . . 2 3 . 4 . 1 . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1615	.....4.1.134..1.	1243342121344312	Basic 4x4 Sudoku 1615	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 . 1 3 4 . . 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1616	.3....1.2....4..	1342421321343421	Basic 4x4 Sudoku 1616	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 . . . . 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1617	....143...2..3.1	3214143241232341	Basic 4x4 Sudoku 1617	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 . . 3 . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1618	.13.43.13....24.	2134432134121243	Basic 4x4 Sudoku 1618	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 . 1 3 . . . . 2 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1619	...4.2..2.4.3.12	1324423121433412	Basic 4x4 Sudoku 1619	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 . . 2 . 4 . 3 . 1 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1620	1..334..23.4....	1243342123144132	Basic 4x4 Sudoku 1620	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 3 . 4 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1621	.4....2.4..3.34.	2431312442131342	Basic 4x4 Sudoku 1621	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 . 4 . . 3 . 3 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1622	.2.....1..3....4	1243342141322314	Basic 4x4 Sudoku 1622	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_1623	..3..2.11.2....4	4132324114232314	Basic 4x4 Sudoku 1623	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 1 . 2 . . . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1624	......43.4.22...	4321124334122134	Basic 4x4 Sudoku 1624	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 . 2 2 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1625	.2..13.4.1...43.	4213132431422431	Basic 4x4 Sudoku 1625	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 . 1 . . . 4 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1626	..4....24.3.....	2143341242311324	Basic 4x4 Sudoku 1626	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 4 . 3 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1627	.1..4.2...1....4	2143432134121234	Basic 4x4 Sudoku 1627	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	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1628	...2..3.4..3.1..	1342243142133124	Basic 4x4 Sudoku 1628	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 . . 3 . 1 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1629	4....2....2..4.1	4312124331242431	Basic 4x4 Sudoku 1629	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 . . . . 2 . . 4 . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1630	12........32....	1243342141322314	Basic 4x4 Sudoku 1630	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_1631	.4....4...3.31..	2413134242313124	Basic 4x4 Sudoku 1631	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 . 3 1 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1632	1....4....2...31	1342241331244231	Basic 4x4 Sudoku 1632	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 . . . 3 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1633	.....214....21.3	1432321443212143	Basic 4x4 Sudoku 1633	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 . . . . 2 1 . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1634	423.1..4.14.3...	4231132421433412	Basic 4x4 Sudoku 1634	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 . 1 . . 4 . 1 4 . 3 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1635	.3...2.33.1..134	4321124334122134	Basic 4x4 Sudoku 1635	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 . 3 3 . 1 . . 1 3 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1636	..3.3.42421.....	2431314242131324	Basic 4x4 Sudoku 1636	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 4 2 1 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1637	4...1.42.1....3.	4213134231242431	Basic 4x4 Sudoku 1637	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 . 1 . . . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1638	2..3.4.112......	2143342112344312	Basic 4x4 Sudoku 1638	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 1 2 . . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1639	.324.2.....3..1.	1324423121433412	Basic 4x4 Sudoku 1639	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 . 2 . . . . . 3 . . 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1640	2.3..4.143.....3	2134342143121243	Basic 4x4 Sudoku 1640	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 3 . . . . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1641	4.1..2.4.42.....	4312123434212143	Basic 4x4 Sudoku 1641	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 . 4 . 4 2 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1642	.....1.....2324.	2314412314323241	Basic 4x4 Sudoku 1642	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	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1643	2.3..32....21...	2134432134121243	Basic 4x4 Sudoku 1643	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 2 . . . . 2 1 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1644	.4.1.......3..14	2431134241233214	Basic 4x4 Sudoku 1644	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 . . 1 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1645	3....4..423..34.	3124241342311342	Basic 4x4 Sudoku 1645	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 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1646	.1..2...324..423	4132231432411423	Basic 4x4 Sudoku 1646	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 2 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1647	.3.22....2.4.12.	1342243132144123	Basic 4x4 Sudoku 1647	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 . . . . 2 . 4 . 1 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1648	..2..213..3....1	3124421314322341	Basic 4x4 Sudoku 1648	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 . . 3 . . . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1649	...2.34..4......	4132234114233214	Basic 4x4 Sudoku 1649	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 . . 4 . . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1650	.2...32.3.1...3.	1243432134122134	Basic 4x4 Sudoku 1650	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 . 3 . 1 . . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1651	12.4.312....2.4.	1234431234212143	Basic 4x4 Sudoku 1651	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 2 . . . . 2 . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1652	3......441...3.1	3412123441232341	Basic 4x4 Sudoku 1652	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 . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1653	32.14.....13..2.	3241413224131324	Basic 4x4 Sudoku 1653	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 4 . . . . . 1 3 . . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1654	34.22..44..1..4.	3412213443211243	Basic 4x4 Sudoku 1654	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 2 . . 4 4 . . 1 . . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1655	142.3...2.3.....	1423324121344312	Basic 4x4 Sudoku 1655	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 . 3 . . . 2 . 3 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1656	34..1.43....2.14	3421124341322314	Basic 4x4 Sudoku 1656	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 . 4 3 . . . . 2 . 1 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1657	2.4..1.31....21.	2341412314323214	Basic 4x4 Sudoku 1657	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 1 . . . . 2 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1658	2.4....3...4.43.	2341412332141432	Basic 4x4 Sudoku 1658	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 . 4 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1659	....3..4.12.....	1432321441232341	Basic 4x4 Sudoku 1659	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_1660	41.......2...4.1	4132231412433421	Basic 4x4 Sudoku 1660	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 . . . 4 . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1661	.2.4.....4..1...	3214412324311342	Basic 4x4 Sudoku 1661	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 . . 1 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1662	2.3.1..242..3..4	2431134242133124	Basic 4x4 Sudoku 1662	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 2 . . 3 . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1663	2431.1..4.12....	2431312443121243	Basic 4x4 Sudoku 1663	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 . 1 . . 4 . 1 2 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1664	.3.....1...2..4.	1324423134122143	Basic 4x4 Sudoku 1664	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 . . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1665	4....1.42.4.....	4213312423411432	Basic 4x4 Sudoku 1665	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 . 4 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1666	......314....24.	3124243143121243	Basic 4x4 Sudoku 1666	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 . . . . 2 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1667	4..33...231..43.	4123324123141432	Basic 4x4 Sudoku 1667	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 3 1 . . 4 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1668	..13....1.....41	4213312414322341	Basic 4x4 Sudoku 1668	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 . . . . 1 . . . . . 4 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1669	.3.4........2.4.	1324423134122143	Basic 4x4 Sudoku 1669	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	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1670	....3..1.....21.	2134342113424213	Basic 4x4 Sudoku 1670	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 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1671	.2...432412....1	3214143241232341	Basic 4x4 Sudoku 1671	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 4 1 2 . . . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1672	....3.1..2.1.32.	2143341242311324	Basic 4x4 Sudoku 1672	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 . 3 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1673	3......3...4.4.1	3142421313242431	Basic 4x4 Sudoku 1673	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 . 4 . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1674	...2..1....4.32.	3142241312344321	Basic 4x4 Sudoku 1674	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 . 3 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1675	.41.31.21....23.	2413314213244231	Basic 4x4 Sudoku 1675	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 1 . 2 1 . . . . 2 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1676	3.42..3..32..21.	3142243113244213	Basic 4x4 Sudoku 1676	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 . . 3 . . 3 2 . . 2 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1677	....4..2...4..3.	1243431231242431	Basic 4x4 Sudoku 1677	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 . . . 4 . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1678	4.13..4.213..4..	4213134221343421	Basic 4x4 Sudoku 1678	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 . 2 1 3 . . 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1679	.4..231.3.4...2.	1432231432414123	Basic 4x4 Sudoku 1679	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 1 . 3 . 4 . . . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1680	4.....3....2.2..	4321213434121243	Basic 4x4 Sudoku 1680	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 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1681	...3.4.1.2...3..	2143342112344312	Basic 4x4 Sudoku 1681	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 . . . 3 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1682	.....2.....1.423	4132321423411423	Basic 4x4 Sudoku 1682	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 2 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1683	.....2311..424..	3142423113242413	Basic 4x4 Sudoku 1683	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 2 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1684	..4..1...32..4..	3241413213242413	Basic 4x4 Sudoku 1684	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 2 . . 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1685	.24.14.22.......	3241143223144123	Basic 4x4 Sudoku 1685	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 . 2 2 . . . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1686	..3..1....4..4..	4231312413422413	Basic 4x4 Sudoku 1686	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 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1687	...3..1..2.....4	2143341242311324	Basic 4x4 Sudoku 1687	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 . . . . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1688	.3..4..2.42.3.4.	2314413214233241	Basic 4x4 Sudoku 1688	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 . 3 . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1689	.3.....43.2..2..	4312213434211243	Basic 4x4 Sudoku 1689	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 . 2 . . 2 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1690	.3.41.2.4...324.	2314142341323241	Basic 4x4 Sudoku 1690	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 . . . 3 2 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1691	1..4.2....12.1.3	1324423134122143	Basic 4x4 Sudoku 1691	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 2 . 1 . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1692	4..22.1.1.2.....	4132231414233241	Basic 4x4 Sudoku 1692	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 2 . 1 . 1 . 2 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1693	.4.2.3.1.1..3...	1432234141233214	Basic 4x4 Sudoku 1693	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 . 1 . 1 . . 3 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1694	.13.2.1.3..11.4.	4132231434211243	Basic 4x4 Sudoku 1694	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 . 1 . 3 . . 1 1 . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1695	.2..3.4...3.....	4213314224311324	Basic 4x4 Sudoku 1695	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 . . . 3 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1696	..3.2.4....3..2.	1432234142133124	Basic 4x4 Sudoku 1696	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 . . . . 3 . . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1697	..12.1433.2.1...	4312214334211234	Basic 4x4 Sudoku 1697	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 4 3 3 . 2 . 1 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1698	...3...22...1...	4213314224311324	Basic 4x4 Sudoku 1698	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	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1699	.32....41.433...	4321213412433412	Basic 4x4 Sudoku 1699	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 . 4 3 3 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.

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