PAPER PRACTICE
Nonograms: Find the first certain squares
Three fixed studies, followed by separate answer pages. The links and IDs match the online collection.
Fill squares to match the ordered runs beside each row and above each column. Separate consecutive runs by at least one empty square. A clue of 0 means the line is empty. These compact boards practise number constraints; their patterns are not promised to depict recognisable pictures.
Use your browser’s Print command or Save as PDF. Both A4 and US Letter fit the diagrams. To keep answers separate, print only the challenge pages. The answer pages contain two useful checkpoints; the online practice page contains the complete checked route.
CHALLENGE 1
Nonogram study 1
| C13 1 | C20 | C32 1 | C40 | C51 1 | |
|---|---|---|---|---|---|
| R11 | |||||
| R21 · 1 · 1 | |||||
| R31 · 1 | |||||
| R40 | |||||
| R51 · 1 · 1 |
Explain one move you can prove. Which displayed clue or rule supports it?
Reason: ____________________________________________________
___________________________________________________________
CHALLENGE 2
Nonogram study 2
| C12 | C23 | C31 | C41 1 | C51 | |
|---|---|---|---|---|---|
| R11 | |||||
| R22 · 2 | |||||
| R31 | |||||
| R43 | |||||
| R50 |
Explain one move you can prove. Which displayed clue or rule supports it?
Reason: ____________________________________________________
___________________________________________________________
CHALLENGE 3
Nonogram study 3
| C13 1 | C23 | C31 3 | C41 | C53 1 | |
|---|---|---|---|---|---|
| R15 | |||||
| R22 · 1 | |||||
| R33 · 1 | |||||
| R41 | |||||
| R51 · 1 · 1 |
Explain one move you can prove. Which displayed clue or rule supports it?
Reason: ____________________________________________________
___________________________________________________________
ANSWER 1
Nonogram study 1
| C13 1 | C20 | C32 1 | C40 | C51 1 | |
|---|---|---|---|---|---|
| R11 | |||||
| R21 · 1 · 1 | |||||
| R31 · 1 | |||||
| R40 | |||||
| R51 · 1 · 1 |
Two checkpoints in the solution
- Row 2, clue 1, 1, 1: 1 legal arrangement remains after respecting the current marks. Every arrangement agrees on R2C1 filled, R2C2 empty, R2C3 filled, R2C4 empty, R2C5 filled. Other undecided cells in this line are left open.
- Row 4, clue 0: 1 legal arrangement remains after respecting the current marks. Every arrangement agrees on R4C1 empty, R4C2 empty, R4C3 empty, R4C4 empty, R4C5 empty. Other undecided cells in this line are left open.
ANSWER 2
Nonogram study 2
| C12 | C23 | C31 | C41 1 | C51 | |
|---|---|---|---|---|---|
| R11 | |||||
| R22 · 2 | |||||
| R31 | |||||
| R43 | |||||
| R50 |
Two checkpoints in the solution
- Row 2, clue 2, 2: 1 legal arrangement remains after respecting the current marks. Every arrangement agrees on R2C1 filled, R2C2 filled, R2C3 empty, R2C4 filled, R2C5 filled. Other undecided cells in this line are left open.
- Row 4, clue 3: 3 legal arrangements remain after respecting the current marks. Every arrangement agrees on R4C3 filled. Other undecided cells in this line are left open.
ANSWER 3
Nonogram study 3
| C13 1 | C23 | C31 3 | C41 | C53 1 | |
|---|---|---|---|---|---|
| R15 | |||||
| R22 · 1 | |||||
| R33 · 1 | |||||
| R41 | |||||
| R51 · 1 · 1 |
Two checkpoints in the solution
- Row 1, clue 5: 1 legal arrangement remains after respecting the current marks. Every arrangement agrees on R1C1 filled, R1C2 filled, R1C3 filled, R1C4 filled, R1C5 filled. Other undecided cells in this line are left open.
- Row 2, clue 2, 1: 3 legal arrangements remain after respecting the current marks. Every arrangement agrees on R2C2 filled. Other undecided cells in this line are left open.