CSE143
4-Queens Trace handout
#22
explore col 1
1--place, explore col 2
1
2
3--place,
explore col 3
1
2
3
4
4--place,
explore col 3
1
2--place, explore col 4
1
2
3
4
3
4
2--place, explore col 2
1
2
3
4--place,
explore col 3
1--place, explore col 4
1
2
3--place, explore col 5
done!
