VINTAGE COMPUTING CHRISTMAS CHALLENGE 2023

A size optimizing challenge, where you try to implement the given
shape (Christmas Diamonds / Mash) as short as possible. Moreover 
you could get creative and implement some extended version.
The event was held online from 4th Decemember until 30th December.
More information can be found here: http://logiker.com/vccc2023

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The post compo allows to add entries after the compo for perfection 
and archiving purpose. 

Post Compo

 1 Christmas Diamonds (Canvas/Canvas) by pdw [12]
 2 Christmas Diamonds (PC/APL) by Logiker [22]
 3 Christmas Diamonds (commodore C64/6502 Assembler) by Serato [25]
 3 Christmas Diamonds (Amstrad CPC/Z80 Assembler) by Logon System / Overflow & Longshot [25]
 5 Christmas Diamonds (KC 85/4/Z80 Assembler) by dOc.K [26]
 6 Christmas Diamonds (Atari XE/XL/6502 Assembler) by dmsc [29]
 7 Christmas Diamonds (Amiga/Assembler) by Losso / AttentionWhore [56]
 8 Christmas Diamonds (Sinclair ZX Spect../Sinclair BASIC) by Manzolli [102]
 9 Christmas Diamonds (PC/Python) by Konstantin Balashov [256]
10 Christmas Diamonds (Sinclair ZX Spect../BASIC) by Zarsoft [281]