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Weekly Extreme Str8ts Puzzle #35 Solution
- 1. Weekly Extreme Str8ts Puzzle #35 February 20 - February 26, 2011www.str8ts.com Solution bySlowThinker
- 2. Start
- 4. H1=9h, H6=8, J6=9 Thereis an X-Wing on 8 at EF89(youdon‘tneeditrightaway, but I useditforthefollowingsteps)
- 5. G4=6s, G9=4p, G8=5c, G5=7, H8=7, J8=6
- 6. H4=4, D5=5, D9=7, H5=3, H9=5
- 7. J9=2, A9=6, B5=8s, F3=3c
- 8. E4=7p, E7=9, A4=8, B4=9
- 9. E8=8, E9=1, F8=9, F9=8
- 10. B9=3, C9=9, B6=4, A6=2, C6=3
- 11. J1=8s, J2=7, J7=5, J3=4
- 12. E3=2, E2=4, F2=2p, F5=4, F1=6
- 13. C5=2, B3=6s, B2=5, B1=7
- 14. C2=6, C1=5c, A1=4, A7=7, A3=5 Done
- 15. Glossary Letters appended to steps indicate the last strategy used, just before filling in a field: No letter … number was last candidate in field s … single (last) candidate for that number in compartment c … compartment range check d … stranded (unreachable/impossible) digits removed h … high/low range check across compartments p/t/q … naked pair / naked triple / naked quadruple ph/th/qh … hidden pair / hidden triple / hidden quadruple x … X-wing (2 rows / 2 columns) w … Swordfish (3 rows / 3 columns) j … Jellyfish (4 rows / 4 columns) L … large gap field Sx … Setti’s rule (count the numbers rule) – ‘x’ is the analysed number u … unique rectangle y … Y-Wing (or extended Y-Wing e.g. XY-Chains)
- 16. Weekly Extreme Str8ts Puzzle #35www.str8ts.com Solution by SlowThinker Note: there are other (maybe easier or more logical) ways to solve this puzzle.