Which is a winning combination of digits?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Category: 
Correct Answers: 
2
Points: 
9

Calculate the number 9487

NUMBERMANIA: Calculate the number 9487 using numbers [1, 2, 7, 5, 12, 690] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
0
Points: 
10

Decrypt the map

PUZZLE: Decrypt the map!
Category: 
Correct Answers: 
1
Points: 
10

Calculate the number 1290

NUMBERMANIA: Calculate the number 1290 using numbers [6, 4, 5, 2, 79, 991] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
0
Points: 
10
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