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_1500	.1.3..1.4.....3.	2143341243211234	Basic 4x4 Sudoku 1500	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 . . . . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1501	...1.2.....3.3..	3421123421434312	Basic 4x4 Sudoku 1501	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	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1502	3......442.3..42	3421213442131342	Basic 4x4 Sudoku 1502	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 . . 4 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1503	..3..314.2.3.42.	4132231412433421	Basic 4x4 Sudoku 1503	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 1 4 . 2 . 3 . 4 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1504	4....2..3..4....	4312124331242431	Basic 4x4 Sudoku 1504	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 . . 4 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1505	1.2...4.4....3..	1423324141322314	Basic 4x4 Sudoku 1505	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 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1506	32.441....41...2	3214412323411432	Basic 4x4 Sudoku 1506	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 1 . . . . 4 1 . . . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1507	...4..1.1...3.2.	2134431212433421	Basic 4x4 Sudoku 1507	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 . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1508	2.....1....4..3.	2143341213244231	Basic 4x4 Sudoku 1508	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 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1509	.4....1.3..1...2	1423231432414132	Basic 4x4 Sudoku 1509	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	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1510	312......4.22.4.	3124421314322341	Basic 4x4 Sudoku 1510	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 . 2 2 . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1511	.123...1....1..4	4123234134121234	Basic 4x4 Sudoku 1511	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 . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1512	.1242.3......213	3124243113424213	Basic 4x4 Sudoku 1512	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 . 3 . . . . . . 2 1 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1513	.12...314.131...	3124243142131342	Basic 4x4 Sudoku 1513	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 . 1 3 1 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1514	3.1..1..1.4..43.	3214412313422431	Basic 4x4 Sudoku 1514	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 . . 1 . 4 . . 4 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1515	..3...4.2...3...	4231134224133124	Basic 4x4 Sudoku 1515	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 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1516	1.32..14..2.2..3	1432321443212143	Basic 4x4 Sudoku 1516	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 4 . . 2 . 2 . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1517	.413.....2.14...	2413132432414132	Basic 4x4 Sudoku 1517	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 . 1 4 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1518	...3....3.1.21.4	1243432134122134	Basic 4x4 Sudoku 1518	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 . 1 . 2 1 . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1519	34...24.41......	3421124341322314	Basic 4x4 Sudoku 1519	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_1520	...1.42..3...1.2	3241142323144132	Basic 4x4 Sudoku 1520	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 . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1521	1.........3..214	1423234141323214	Basic 4x4 Sudoku 1521	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 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1522	12........32....	1243342141322314	Basic 4x4 Sudoku 1522	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_1523	134...3...14..23	1342243132144123	Basic 4x4 Sudoku 1523	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 4 . . 2 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1524	4132.2.4..4....3	4132321423411423	Basic 4x4 Sudoku 1524	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 . 2 . 4 . . 4 . . . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1525	.1.2.4..1.2..23.	3142241313244231	Basic 4x4 Sudoku 1525	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 . 2 . . 2 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1526	.12.32....322..1	4123321414322341	Basic 4x4 Sudoku 1526	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 . . . . 3 2 2 . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1527	34.......14....1	3412123421434321	Basic 4x4 Sudoku 1527	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 . . . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1528	.4...3244..2....	2413132441323241	Basic 4x4 Sudoku 1528	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 4 4 . . 2 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1529	.....4.21.2.....	2143341213244231	Basic 4x4 Sudoku 1529	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 . 2 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1530	2....3.......13.	2413132432414132	Basic 4x4 Sudoku 1530	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 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1531	1....34.3.....13	1432234131244213	Basic 4x4 Sudoku 1531	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	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1532	4.2.3.1.2.4.....	4123321423411432	Basic 4x4 Sudoku 1532	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 . 2 . 4 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1533	4..11.24.4.....2	4231132424133142	Basic 4x4 Sudoku 1533	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 4 . 4 . . . . . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1534	..21..4.1...3..4	4321214314323214	Basic 4x4 Sudoku 1534	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 . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1535	.421.1.4..1.1..2	3421213442131342	Basic 4x4 Sudoku 1535	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 . 4 . . 1 . 1 . . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1536	.2..4.1....1..4.	1234431234212143	Basic 4x4 Sudoku 1536	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 . . . . 1 . . 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1537	1.3..3..312....3	1432234131244213	Basic 4x4 Sudoku 1537	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 . . 3 1 2 . . . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1538	..4..4...3.4..23	3241143223144123	Basic 4x4 Sudoku 1538	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 . 4 . . 2 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1539	..4..23.3..4....	1342423131242413	Basic 4x4 Sudoku 1539	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 . 3 . . 4 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1540	413..3....2...41	4132231414233241	Basic 4x4 Sudoku 1540	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 . . . . 2 . . . 4 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1541	3.1.4.2...4.1...	3214412323411432	Basic 4x4 Sudoku 1541	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 . 1 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1542	2...4.....32...1	2314412314323241	Basic 4x4 Sudoku 1542	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_1543	.412..3.4....14.	3412123443212143	Basic 4x4 Sudoku 1543	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 4 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1544	......2..1...43.	4213132431422431	Basic 4x4 Sudoku 1544	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 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1545	.13......21..4..	4132234132141423	Basic 4x4 Sudoku 1545	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 . . 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1546	..1....33...2..4	4312124334212134	Basic 4x4 Sudoku 1546	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	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1547	134........4.43.	1342421331242431	Basic 4x4 Sudoku 1547	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 . . . . . . . . 4 . 4 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1548	.3.11.3..4..21..	4321123434122143	Basic 4x4 Sudoku 1548	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 . . 2 1 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1549	.1.....3.32.1..4	3142241343211234	Basic 4x4 Sudoku 1549	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 . 1 . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1550	..433....1.2..1.	1243342141322314	Basic 4x4 Sudoku 1550	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 . . . . 1 . 2 . . 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1551	2.34.41.432.....	2134341243211243	Basic 4x4 Sudoku 1551	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 1 . 4 3 2 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1552	.4.3....2.1.....	1423324123144132	Basic 4x4 Sudoku 1552	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_1553	..2.123.341..1..	4321123434122143	Basic 4x4 Sudoku 1553	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 2 3 . 3 4 1 . . 1 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1554	.4.2..1..24.....	1432231432414123	Basic 4x4 Sudoku 1554	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 . . 2 4 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1555	.2...31...3....1	1243431221343421	Basic 4x4 Sudoku 1555	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 . . . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1556	.....432....321.	2341143241233214	Basic 4x4 Sudoku 1556	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 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1557	.3.1124....4....	4321124321343412	Basic 4x4 Sudoku 1557	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 2 4 . . . . 4 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1558	..1.124..4....2.	4312124324313124	Basic 4x4 Sudoku 1558	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 . 1 2 4 . . 4 . . . . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1559	....12..2.....3.	3421124323144132	Basic 4x4 Sudoku 1559	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 . . . . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1560	.23.....2.4..321	1234341221434321	Basic 4x4 Sudoku 1560	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 . 4 . . 3 2 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1561	1..3.2..2.1.....	1423324123144132	Basic 4x4 Sudoku 1561	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_1562	......124....2.4	2143341243211234	Basic 4x4 Sudoku 1562	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_1563	.3..21.4342.....	4312213434211243	Basic 4x4 Sudoku 1563	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 3 4 2 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1564	.4..31...321...4	2413314243211234	Basic 4x4 Sudoku 1564	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 2 1 . . . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1565	...1..2.1...4..3	2431312413424213	Basic 4x4 Sudoku 1565	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	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1566	4..3........3.24	4213134224313124	Basic 4x4 Sudoku 1566	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	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1567	.....3..4.2...4.	1432231441233241	Basic 4x4 Sudoku 1567	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_1568	...1...22...4...	3241143223144123	Basic 4x4 Sudoku 1568	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 . . . 4 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1569	3..2....1...2..1	3142421313242431	Basic 4x4 Sudoku 1569	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 . . 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1570	..4.24.3....3...	1342241342313124	Basic 4x4 Sudoku 1570	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	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1571	3..2..1.1.....21	3142241312344321	Basic 4x4 Sudoku 1571	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 1	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1572	3...14.3.1.22.1.	3241142341322314	Basic 4x4 Sudoku 1572	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 . 1 . 2 2 . 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1573	143.3..4..41....	1432321423414123	Basic 4x4 Sudoku 1573	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 . . 4 . . 4 1 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1574	.3411....214..3.	2341142332144132	Basic 4x4 Sudoku 1574	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 1 . . . . 2 1 4 . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1575	.2.1..3....3..2.	3241413224131324	Basic 4x4 Sudoku 1575	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 . . . . 3 . . 2 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1576	..3....14...12..	2134342143121243	Basic 4x4 Sudoku 1576	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 . . . 1 2 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1577	42..3..2...1....	4213314224311324	Basic 4x4 Sudoku 1577	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 . . . 1 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1578	21.434....1..3..	2134342142131342	Basic 4x4 Sudoku 1578	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 4 . . . . 1 . . 3 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1579	.4.11.34.31....3	3421123443122143	Basic 4x4 Sudoku 1579	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 . 3 1 . . . . 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1580	.1.4.....2..3..1	2134431212433421	Basic 4x4 Sudoku 1580	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_1581	34.1.1...3....13	3421213413424213	Basic 4x4 Sudoku 1581	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 . 1 . . . 3 . . . . 1 3	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1582	..2.1........3.4	3421124341322314	Basic 4x4 Sudoku 1582	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_1583	24.......2.....3	2431134232144123	Basic 4x4 Sudoku 1583	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_1584	2.1...4.1...42..	2413314213244231	Basic 4x4 Sudoku 1584	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 . . . 4 2 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1585	.....2..4.3..34.	1423321441322341	Basic 4x4 Sudoku 1585	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_1586	1.3434..2.....1.	1234342121434312	Basic 4x4 Sudoku 1586	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 . . 2 . . . . . 1 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1587	23..4.2.32.1...2	2314412332411432	Basic 4x4 Sudoku 1587	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 . 2 . 3 2 . 1 . . . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1588	.42..243...443..	3421124321344312	Basic 4x4 Sudoku 1588	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 . . . 4 4 3 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1589	42..3......3..42	4231312424131342	Basic 4x4 Sudoku 1589	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 . . . . . . 3 . . 4 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1590	2.41.1.3...2.23.	2341412334121234	Basic 4x4 Sudoku 1590	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 . 1 . 3 . . . 2 . 2 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1591	....41...41...3.	2341412334121234	Basic 4x4 Sudoku 1591	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 1 . . . 3 .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1592	1..3...1..3..4..	1243432121343412	Basic 4x4 Sudoku 1592	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 . . 3 . . 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1593	1..3.4.14...23.4	1243342141322314	Basic 4x4 Sudoku 1593	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 . 1 4 . . . 2 3 . 4	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1594	...12.4312...3.2	3421214312344312	Basic 4x4 Sudoku 1594	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 . . . 3 . 2	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1595	...2..1..3.4.2..	3142241313244231	Basic 4x4 Sudoku 1595	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	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1596	.2....1221.4.4..	1243431221343421	Basic 4x4 Sudoku 1596	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 2 2 1 . 4 . 4 . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1597	.13.2.....1.....	4132234132141423	Basic 4x4 Sudoku 1597	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 . . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1598	4.1212..24.1....	4312124324313124	Basic 4x4 Sudoku 1598	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 1 2 . . 2 4 . 1 . . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.
4x4_sudoku_1599	....2413...14...	1324241332414132	Basic 4x4 Sudoku 1599	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 4 . . .	4	4	None	Complete the sudoku board based on the rules and visual elements.

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