1{2 "id": "daily-2026-04-16",3 "date": "2026-04-16",4 "width": 4,5 "height": 4,6 "difficulty": "easy",7 "seed": "sample-seed",8 "givens": [9 { "row": 0, "col": 0, "value": 4 },10 { "row": 0, "col": 2, "value": 4 },11 { "row": 2, "col": 0, "value": 4 },12 { "row": 2, "col": 2, "value": 4 }13 ],14 "solution": [15 { "row": 0, "col": 0, "width": 2, "height": 2, "value": 4 },16 { "row": 0, "col": 2, "width": 2, "height": 2, "value": 4 },17 { "row": 2, "col": 0, "width": 2, "height": 2, "value": 4 },18 { "row": 2, "col": 2, "width": 2, "height": 2, "value": 4 }19 ]20}