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[daj95376]

[tlanglet]

Danny, I just read your ANP() post prior to looking at this puzzle and it stimulated my attention in that direction. That, plus the tons of digits 4, 5, & 7 made this a fun, interesting, challenging puzzle for me........


1. ANP(57=4)r1c7|r2c9 - (4=5)r2c5 - r1c4 = (5)r1c7; r3c7<>5
2. ANP(57=4)[AUR48r56c48|r5c7] - (4=7)r3c7 - r3c12 = r2c3 - r5c3 = (7)r4c1; r4c8<>7
3. ANP(57=4)r7c8|r9c9 - r56c8 = r5c7 - (4=7)r3c7 - r3c2 = r9c2 - (7=5)r9c9; r8c9<>5
4. AXY-wing 45-7 with vertex 45 r2c5, pincer 57 r1c4 pincer 47 r2c9 plus fin 5 r2c9
xy-wing deletes: r1c7,r2c6<>7
fin deletes: (5)r2c9 - r9c9 = r9c2 - r6c2 = r6c8 - r5c7 = (5)r1c7; r1c7<>7

Notes:
1. At the end, I ran out of ANP()s.
2. I attempted to notate the second step but it may be incorrect or not understandable. The idea is to form ANP(57=4) by combining the pseudocell 57 from the AUR48 with the 457 in r5c7.
3. I would appreciate some help from anyone with the notation for the AXY-wing 45-7.

Ted

[Marty R.]

I used an ER (5), XY-Wing (457) and Simple coloring (7).

[yeoks]

Skyscraper (5); r7c8 <>5
XY wing (5-47) r2c9; r1c4 and r2c6 <>5
Kite (7); r5c3 <>7

[daj95376]

[yeoks]