International Solving Contest 2011 – Problems

7th International Solving Contest (ISC)
23th January, 2011

Category 1 – Problems

Round 1, time 2 hours:

1



#2

2



#3
3



#4
4



+
5



h#6, 2 solutions
6



s#3

Round 2, time 2 hours:

7



#2
8



#3
9



#5
10



=
11



h#3, 3 solutions
12



s#5

Solutions

 

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