MINES BENCHMARK · BEGINNER

Qwen3.8 27B on Beginner board 1

Hit a mine after 1 turn, with 5% of the safe cells cleared beyond the opening and 1 flag on safe cells. All of Qwen3.8 27B's boards.

RESULTHit a mine
ENDED BYmine
CLEARED5%
BOARD9×9, 10 mines
ILLEGAL / WASTED0 / 0
MODEL TIME0.8 min
COSTlocal, no list price
TOKENS IN / OUT558 / 423
REQUESTS1

covered ⚑ flag 3 open ● mine ● the mine it hit ⚑ flag on a safe cell 2 opened this turn

The board at the end

Every mine shown. A red flag sat on a safe cell. Step through the turns to see how it got here.

  1. the same for every model
  2. 6 of 6 applied · 3 opened · hit a mine
  3. every mine shown

The end of its last reply

I'll analyze the revealed cluster around rows 3-5, columns 4-6.

Let me label the covered cells:
- Row 2: B=(2,4), C=(2,5), D=(2,6)
- Row 3: H=(3,7), I=(3,8)
- Row 4: J=(4,7)
- Row 5: K=(5,7), L=(5,8)

Constraints from the open numbers:
- (4,5)=0 → all its neighbours are safe, which forces H, J, K safe.
- (3,5)=1, (3,6)=1: among {C, H, D, J}, exactly one mine. With H, J safe, the mine is in {C, D}.
- (3,4)=1: among {B, C, H}, exactly one. H is safe, so the mine is in {B, C}.
- (4,4)=2: among {B, C, D, H, J}, exactly two mines. H, J safe → mines are exactly C and D.

From "mines are exactly C and D" together with "mine in {B, C}", I conclude:
- C is a mine.
- D is a mine.
- B is safe (since the {B, C} mine is C).
- H, J, K are safe.
- I and L have no numbers constraining them and remain uncertain (correctly not revealed).

So the provably safe cells are: (2,4), (3,7), (4,7), (5,7). The mines (to avoid) are (2,5) and (2,6).

<actions>
flag 2 5
flag 2 6
reveal 2 4
reveal 3 7
reveal 4 7
reveal 5 7
</actions>