Dominosa can't highlight n > 9

[chrisboyle]

Reported by Avery Radmacher.

• dominosa.c would need to accept multi-digit input, and I'm not sure how this would play out on other platforms. If the game goes up to 12 and you want to highlight 1, do you have to press '0' '1', or '1' 'enter', or what?
• My keyboard widget would need to allow one tap to generate multiple key-press events.

An alternative would be for Dominosa to use letters instead of multi-digit numbers, but I as the Android porter am not going to do that unilaterally just on Android.

[chrisboyle]

+1 from Jelmer ter Burg

[Dansiman]

I think you could support numbers up to 19 using Shift-digit on PC, which should be compatible with Android by emulating the symbols !@#$%^&*(). I can't see this puzzle being very playable with n ≥ 20, since the time needed to solve it increases exponentially(?) as n increases, so that might be enough.

I do see one potential (albeit minor) issue on desktop, in that 0 is next to 9 on the keyboard, but ) would be used for 10, while ( would be for 19, so it could be mildly annoying for someone playing e.g. n=12 to have to use both ends of their numeral row for the three highest values, but it still beats just being entirely unable to highlight those numbers.

[JonnyTech]

I think you could support numbers up to 19 using Shift-digit on PC, which should be compatible with Android by emulating the symbols !@#$%^&*().

I frequently switch between UK and US keyboards - the shift+number combinations are not the same - other languages have differing layouts. Pressing shift+2 always confuses me!