Nonocross - Puzzle 18

Nonocross Puzzle 18 Answer — Ninja

Nonocross Puzzle 18, Ninja, is a 7×7 grid with 38 filled cells and 11 empty cells in the stored game board. The completed board is shown below with its row and column clues. These clues allow 2 valid grids, so the displayed board is a verified solution but not the only arrangement that satisfies every clue.

Use the clue tables and forced-cell information to compare your progress. A board can differ from the stored picture in the uncertain cells and still be correct if every row and column clue is satisfied.

Puzzle 18 - solved boardNinja
7 x 7
Grid size
38
Filled cells
11
Empty cells
2
Valid grids for these clues
45
Forced cells
4
Uncertain cells

The clues

Nonocross Puzzle 18 Row and Column Clues

Each line shows its clue and the cells to fill, counted from the left for rows or from the top for columns. Puzzle 18 has 7 rows and 7 columns.

Row clues and cells to fill for Nonocross puzzle 18
RowClueFill cells
Row 162 - 7
Row 261 - 6
Row 352 - 6
Row 452 - 6
Row 571 - 7
Row 652 - 6
Row 7222 - 3, 5 - 6
Column clues and cells to fill for Nonocross puzzle 18
ColumnClueFill cells
Col 1112, 5
Col 271 - 7
Col 371 - 7
Col 461 - 6
Col 571 - 7
Col 671 - 7
Col 7111, 5

The answer

Nonocross Puzzle 18 Solved Grid

Puzzle 18 (Ninja) is a 7×7 board with 38 filled cells and 11 empty cells. The board above is repeated here as plain text, one row per line, with ■ for a filled cell and · for an empty cell, so it can be copied or read by a screen reader.

·■■■■■■
■■■■■■·
·■■■■■·
·■■■■■·
■■■■■■■
·■■■■■·
·■■·■■·

Does Nonocross Puzzle 18 Have More Than One Solution?

Yes. A solver found 2 different grids that satisfy every row and column clue.

Of the 49 cells, 45 are identical in every valid grid and 4 can change between valid solutions. The displayed board is the grid stored with the puzzle, but another arrangement can also be correct if it satisfies every clue.

How to solve it

How to Solve Nonocross Puzzle 18

Start with the lines that need no thinking: Row 5 (7 on 7 cells), Column 2 (7 on 7 cells), Column 3 (7 on 7 cells), Column 5 (7 on 7 cells). A clue that adds up to the full length of its line, counting one gap between groups, can be filled straight away.

The strongest overlap is Column 4: its clue 6 needs 6 of the 7 cells, leaving 1 spare. The block of 6 can slide by at most 1, so cells 2–6 are filled in every placement.

Single-line deductions fix 36 of the 49 cells in the first pass and 45 after 2 passes, then stall. The remaining 4 cells are not forced by line logic alone.

Deductions

Step-by-Step Deductions for Puzzle 18

These deductions come from the actual clues of puzzle 18, applied one line at a time and repeated until nothing new follows.

1

Pass 1 · Row 5

(clue 7 on 7 cells): cells 1–7 must be filled, whatever the rest of the grid holds.

2

Pass 1 · Column 2

(clue 7 on 7 cells): cells 1–7 must be filled, whatever the rest of the grid holds.

3

Pass 1 · Column 3

(clue 7 on 7 cells): cells 1–7 must be filled, whatever the rest of the grid holds.

4

Pass 2 · Row 7

(clue 2 2): using the cells already fixed by crossing lines settles 3 more cells.

Watch out

Common Mistakes in Nonocross Puzzle 18

Joining two groups

Row 7 reads 2 2. In the finished board the groups of 2 and 2 are separated by a single empty cell (cell 4). Filling it would merge them into one block of 5 and break the clue.

Treating a different valid grid as an error

4 cells of this puzzle can legitimately differ between valid grids. If your board satisfies every row and column clue it is a valid solution, even if it does not match the stored picture.

Overthinking a full line

Row 5 (clue 7 on 7 cells) has no spare cell, so every position in it is decided by the clue; there is nothing to test.

Using the answer

How to Check Your Nonocross Puzzle 18 Answer

Read the filled-cell groups in every row and column of your grid and compare them with the clue lists above. In this puzzle row 1 must read 6 and column 1 must read 1 1; the last row must read 2 2 and the last column 1 1.

The line with the most groups is Row 7, which must read 2 2; it is the quickest place to spot a merged or split group.

Verification

How This Nonocross Puzzle 18 Answer Was Verified

  • The filled-cell groups of all 7 rows and 7 columns of the stored board were read and compared with the clue sequences: every line matches.
  • The stored board was compared cell by cell with the 7×7 grid drawn from the game’s own graphics files: identical.
  • A solver counted the grids that satisfy the clues: 2.
  • Not established: this board has not been replayed in the live game app. How SolvedWise checks answers.

Questions

Questions About Nonocross Puzzle 18

What is the answer to Nonocross Puzzle 18?

The displayed 7×7 board is a valid solution for Ninja, but the clues allow 2 valid grids in total.

What are the row clues for Puzzle 18?

row 1: 6; row 2: 6; row 3: 5; row 4: 5; row 5: 7; row 6: 5; row 7: 2 2.

What are the column clues for Puzzle 18?

column 1: 1 1; column 2: 7; column 3: 7; column 4: 6; column 5: 7; column 6: 7; column 7: 1 1.

Is Nonocross Puzzle 18 uniquely solvable?

No. 2 grids satisfy the complete clue set.

How should I start solving Puzzle 18?

Start with the row or column whose clue uses the greatest proportion of its available cells, then transfer the confirmed cells to the crossing clues.