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March 25, 2019 19:59
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Winning answer to the "No Wires" challenge
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| f=(b,c=j=(l=b.replace(/\n/g,r='')).length)=>[...b].map(d=>{for(a=t=9;a;)t-='H'!=l[(0|j-1+(--a%3-1)*b.search` | |
| `+a/3)%c];j+=` | |
| `!=d,r+={H:'t',t:'.','.':t&&3>t&&'H'}[d]||d})&&r |
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This is jcazevedo's winning answer to the Pixels Camp Quizshow qualifiers' No Wires challenge, with just 172 bytes.