Free printable · Answer key included
Printable 15x15 Nonograms (Hard), Pack 4
Fifteen-by-fifteen nonograms are long, absorbing solves with clue lists up to the edge of the grid. Print one per sitting, keep a sharp pencil, and mark empty squares as you go.
Pack 4 of 5 has four nonograms with an answer key on the second page. Between 46 and 56 percent of the squares end up shaded, so no two grids look alike.
15x15 Nonograms (Hard) · Pack 4
logicpuzzles.ca/printable/nonograms/hard-15x15/pack-4
Puzzle 1 · #173
1121
1122
3321
2215
212
137
2111
232
1311
111
111
322
2513
11311
21222
2111
323
213
113
1111
3211
22121
4123
1211
712
31112
111131
152
2121
11112
Puzzle 2 · #157
3115
211311
4124
1121
31212
111311
4111
4115
511
2223
21112
13111
832
53
2111
21411
3261
1331
351
115
332
14
2513
2111
445
1212
111111
3131
14113
21123
Puzzle 3 · #192
214
351
421
2231
4114
11311
111111
2223
111113
33
113112
21213
1121
511
22211
431
5411
31111
414
132
1213
12121
11231
253
312
3131
11222
13311
1112
1212
Puzzle 4 · #159
3112
534
271
111111
3212
411
142
132
1214
1211
5211
11123
13222
1110
24111
1315
3321
3221
11231
116
11113
1342
215
324
311
233
21312
41112
2214
2121
Answers: 15x15 Nonograms (Hard) · Pack 4
logicpuzzles.ca/printable/nonograms/hard-15x15/pack-4
Puzzle 1
1121
1122
3321
2215
212
137
2111
232
1311
111
111
322
2513
11311
21222
2111
323
213
113
1111
3211
22121
4123
1211
712
31112
111131
152
2121
11112
Puzzle 2
3115
211311
4124
1121
31212
111311
4111
4115
511
2223
21112
13111
832
53
2111
21411
3261
1331
351
115
332
14
2513
2111
445
1212
111111
3131
14113
21123
Puzzle 3
214
351
421
2231
4114
11311
111111
2223
111113
33
113112
21213
1121
511
22211
431
5411
31111
414
132
1213
12121
11231
253
312
3131
11222
13311
1112
1212
Puzzle 4
3112
534
271
111111
3212
411
142
132
1214
1211
5211
11123
13222
1110
24111
1315
3321
3221
11231
116
11113
1342
215
324
311
233
21312
41112
2214
2121
How to solve
- Read the clues: The numbers beside a row (or above a column) are the lengths of its shaded blocks, in order, with at least one empty square between blocks.
- Start with big blocks: A block longer than half the line always covers its middle squares, wherever it slides.
- Mark the empties: Put a dot or an X in squares that must stay empty. They cut lines into smaller pieces.
- Cross over: Every square you settle in a row is new information for its column, and the other way round.
Free to print and copy for home, classroom and library use. Every puzzle has one answer you can reach by logic alone.