An Easy 8×8 Logic Puzzle, Solved in 8 Steps
Play this board yourself →A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
1×
×
×
2

×
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3×
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4×
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×

×
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×
5×
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×
6×
×
×
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×
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7

×
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×
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8

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This 8×8 board rates as easy (difficulty score 319). Solving it from scratch takes 8 logical steps, using 3 techniques: Single cell, Row/column exclusion, Adjacency clear. Every step below is forced: nothing here is a guess.
- First, place a marker at E8. Region has exactly one open cell left. Placing here clears the rest of row 8, column E, and its region. Placing here also clears its 2 touching neighbours.
- Next, place a marker at B7. Region has exactly one open cell left. Placing here clears the rest of row 7, column B, and its region. Placing here also clears its 2 touching neighbours.
- Then, place a marker at F5. Region has exactly one open cell left. Placing here clears the rest of row 5, column F, and its region. Placing here also clears its 2 touching neighbours.
- After that, place a marker at D1. Region has exactly one open cell left. Placing here clears the rest of row 1, column D, and its region. Placing here also clears its 1 touching neighbour.
- Now, place a marker at A2. Region has exactly one open cell left. Placing here clears the rest of row 2, column A, and its region.
- From there, place a marker at H6. Region has exactly one open cell left. Placing here clears the rest of row 6, column H, and its region.
- Following that, place a marker at G3. Region has exactly one open cell left. Placing here clears the rest of row 3, column G, and its region.
- Finally, place a marker at C4. Region has exactly one open cell left.
This was an easy solve: every step followed directly from placing a marker and clearing its row, column and region. ∎