idnr: 3905
24*
2-
16+
14+
24+
1-
19+
90*
2/
5*
15+
24*
10*
144*
45*
392*
1680*
14+
72*
4-
270*
32+
64*
4-
9+
1
6+
648*
8
Difficulty: Difficult ()
idnr: 1650
7+
32+
9+
6-
9+
21+
2-
7-
8+
14+
6+
21+
1-
17+
8+
26+
20+
16+
24+
16+
13+
15+
11+
22+
4+
2-
18+
1-
19+
Difficulty: Impossible ()
idnr: 1687
16+
21*
11+
60*
432*
17+
14+
120*
144*
6/
13+
2-
15*
16+
8+
432*
14*
108*
4/
2-
20+
16+
336*
9/
1-
5
13+
14+
18+
6*
2
Difficulty: Medium ()
idnr: 4178
13+
17+
23+
2
10+
11+
36+
33+
6+
7+
6+
10+
16+
20+
11+
9+
12+
4
15+
14+
5
16+
8+
7+
13+
21+
21+
11+
14+
14+
Difficulty: Impossible ()