In 2024, this genre was featured at Grandmaster Puzzles, both as an [Instructionless Sunday Special|https://www.gmpuzzles.com/blog/2024/05/sunday-special-instructionless-by-takeya-saikachi], and as [Araf Loop|https://www.gmpuzzles.com/blog/2024/09/araf-loop-by-takeya-saikachi/], by @TakeyaSaikachi.


## [loop and bounds] Puzzles

### @AnuragSahay

The first ever standard-sized [loop and bounds] puzzle from 2019 that remained unpublished until now (2025)
W=10x10&L=(9)4(2)7(4)3(4)4(4)1(6)2(6)14(8)1(3)5(9)7(3)3(9)7(6)5(5)1(3)14(7)2(3)1(2)4(7)3(5)7&G=loop-and-bounds&A=Anurag&D=2019-07-05&F=3

New puzzles:
W=5x4&L=(4)0(1)3(2)3(0)4(3)1(6)5(1)3&SS=5URDDRRULURULLLLDDDRU&A=Anurag&D=2025-03-19&F=1&T=Example
W=6x6&L=(4)3(1)5(5)4(10)4(7)3(6)4(1)4(3)5&G=loop-and-bounds&A=Anurag&D=2025-03-21&F=2


### @PinkHoodie
W=6x6&L=(0)7(12)4(0)3(4)1(4)5(4)1(1)8(6)2(3)3&SS=2DDRRULUURDRDDRRULURUUULDDLUULDLULDDD&G=loop-and-bounds&A=PinkHoodie&D=2025-03-21&F=3&T=Gamed_Out
W=16x6&L=(2)2(5)3(1)9(4)3(10)9(3)3(4)7(12)2(5)17(10)2(7)7(13)14(4)4(12)7(11)1(0)3&SS=94DDDDLUUUULDLULLDRDLLDRRRURDDLLLLLLLURRULLLDDLLLLLUUUUURDDDDRRRULLUUURDDRRRRRRULLLLLURRRRRRRRRRRD&G=loop-and-bounds&A=PinkHoodie&D=2025-03-22&F=2&T=16x6_1

## Variants
### ´´full-optional´´
V=full-optional
W=7x7&L=x7(4)2(1)2(4)1(2)2(0)4(2)1(6)10(8)1(2)4(2)2(4)1(7)2&X-E=x0x17x6x1x29x6x1x6x2x7&SS=10ULURURDDDDRRULUUURDDRURDDLDRDLDLULDLULUU&V=full-optional


## Acknowledgements and Changes
**2025-01-15** Thanks to @Anurag for clarifying history of this ruleset.
**2025-03-18** Thanks to @Anurag for making the rule panels for [Loop and Bounds] and for noticing a bug in the main constraint, ironed out before the release.
**2025-03-21** An edge case involving question marks was detected by @PinkHoodie just in time for the release, who sent a good unit test. Thank you!
**2025-03-21** :::puzzletters Thanks to @AnuragSahay and @PinkHoodie for sending puzzles for the rollout of [Loop and Bounds]!
**2025-03-22** :::puzzletters @PinkHoodie sent a second [loop and bounds] puzzle for rollout - thank you.
**2025-03-23** :::puzzletters @AnuragSahay sent a ´´full-optional´´ variant [Loop and Bounds] panel for the corresponding puzzle. Thank you!