Brain Teasers
Mini Mine Sweeper
5 total bombs in 3 by 4 grid (3 rows, 4 columns):
row 1: ? ? 2 1
row 2: 3 ? ? ?
row 3: ? 1 ? ?
Find the bombs.
Mine Sweeper rules: each number represents the exact total of surrounding mines.
row 1: ? ? 2 1
row 2: 3 ? ? ?
row 3: ? 1 ? ?
Find the bombs.
Mine Sweeper rules: each number represents the exact total of surrounding mines.
Hint
There is enough information to figure out the entire grid.Answer
* are bombs.row 1: * * 2 1
row 2: 3 3 3 *
row 3: * 1 2 *
Explanation:
Let's rewrite the grid with letters:
row 1: A B 2 1
row 2: 3 C D E
row 3: F 1 G H
Step 1: we know either D or E is a bomb (but not both).
Step 2: From Step 1, we know B or C is a bomb (but not both).
Step 3: From Step 2, we know A and F are bombs.
row 1: * B 2 1
row 2: 3 C D E
row 3: * 1 G H
Step 4: From Step 3, we know C, D, and G are not bombs.
row 1: * B 2 1
row 2: 3 - - E
row 3: * 1 - H
Step 5: From step 4, we know B is a bomb and E is a bomb.
row 1: * * 2 1
row 2: 3 - - *
row 3: * 1 - H
Step 6: Since there are exactly 5 bombs H must be a bomb.
row 1: * * 2 1
row 2: 3 - - *
row 3: * 1 - *
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