Puzzle Description:

Spikeball Logo

#1: Web Paint-By-Number Robot (webpbn) on Jun 6, 2018

New version published by jmhpro14.

That is, indeed, the logo! The picture still needs some tweaking. Maybe if you thickened the outline of the S?

https://www.coolstuff.com/Spikeball-Game

Will do, thanks Kristen!

New version published by jmhpro14.

edge logic 17 r1 = c18-25 white
line logic
EL 9 c25 = r5-11, r22-28 w
LL
EL bottom 5 c25 = r23-28 w
LL
EL 7 r28 places it.
LL
EL 7 c1 = r6-7, r18-19 w
LL
EL 5 c22 = r18-20 w
LL
EL 5 r4 = c7-8, c18 w
LL
EL 5 c4 = it cannot go below r17 without causing a block of one in c5, so c4r18-20 must be white.
LL
two-way logic 5 c22: it can only be in r9-13 or r13-17. Either way, c21r18-20 must be black.
LL
EL 2 c20 = r6 w
(no LL)

internal EL left 3 r5: if it were in c10-12, the 5 in r4 would then leave no room for the right 3 in r5, so r5c12 must be white.
LL
EL left 2 r6 = c6 w
(no LL)
internal EL top 4 c5: if it were in r7-10, it would cause a block of one in c6 (in r8) so c5r7 must be white
LL
EL 5 c7: it's naive range is [r9-19] but it cannot go above r14 without creating a block of three in c8. So its real range is [r14-19] and so c7r15-18 must be black.
LL to finish.

Found to be solvable with moderate lookahead by infrapinklizzard.

Joe, you meant C21 R18-20 must be black. :)

Ki, you are right. Changed. Usually two-way logic gives you white spaces and this time I spaced.

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