Timeline for Which collections of pieces are legal?
Current License: CC BY-SA 4.0
29 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 25, 2021 at 14:59 | comment | added | Laska | @2080: thanks much appreciated | |
| Jan 25, 2021 at 14:56 | comment | added | Laska | @A.Rex ok I found the bug which was just in the totting up. The main spreadsheets were ok, phew! Answer updated, thanks for support | |
| Jan 25, 2021 at 14:55 | history | edited | Laska | CC BY-SA 4.0 |
added link to Kryukov
|
| Jan 25, 2021 at 14:27 | history | edited | Laska | CC BY-SA 4.0 |
correct number
|
| Jan 24, 2021 at 12:26 | history | bounty ended | 2080 | ||
| Jan 21, 2021 at 17:37 | history | edited | Laska | CC BY-SA 4.0 |
expand
|
| Jan 21, 2021 at 14:35 | comment | added | A. Rex | Cool write-up of a lot of things, especially the bishop tint. I agree there are 8694 legal collections considering only pieces of a single color. However, I think there are 58084310 legal collections total. This write-up by someone else agrees: stmintz.com/ccc/index.php?id=77068 (see section 2.2 and especially the inequality constraint (1)) | |
| Jan 21, 2021 at 12:33 | comment | added | Laska | @domotorp: yes! There's all kinds of random constraints: e.g. if 20 bishops are on the board, then the number of white & black light-tint bishops differs by at most 2. Need some systematic way to simplify the possibilities in order to be able to focus on real limiting factors | |
| Jan 21, 2021 at 12:20 | history | edited | Laska | CC BY-SA 4.0 |
fix typo
|
| Jan 21, 2021 at 10:47 | history | edited | Laska | CC BY-SA 4.0 |
better
|
| Jan 21, 2021 at 7:38 | history | edited | Laska | CC BY-SA 4.0 |
Typo
|
| Jan 21, 2021 at 6:09 | history | edited | Laska | CC BY-SA 4.0 |
Smooth
|
| Jan 21, 2021 at 5:57 | history | edited | Laska | CC BY-SA 4.0 |
Typo
|
| Jan 21, 2021 at 5:47 | history | edited | Laska | CC BY-SA 4.0 |
Typo
|
| Jan 21, 2021 at 4:30 | history | edited | Laska | CC BY-SA 4.0 |
added final number
|
| Jan 21, 2021 at 3:25 | history | edited | Laska | CC BY-SA 4.0 |
add numbers
|
| Jan 21, 2021 at 3:03 | history | edited | Laska | CC BY-SA 4.0 |
massively expanded
|
| Jan 21, 2021 at 2:32 | history | edited | Laska | CC BY-SA 4.0 |
massively expanded
|
| Jan 21, 2021 at 2:25 | history | edited | Laska | CC BY-SA 4.0 |
massively expanded
|
| Jan 21, 2021 at 2:18 | history | edited | Laska | CC BY-SA 4.0 |
massively expanded
|
| Jan 20, 2021 at 8:13 | comment | added | domotorp | Yes, you are right, the tint of the bishops is a brilliant observation! If no pieces are missing, except for $x$ black and $2x$ white pawns, and there are $2x$ additional white bishops, then an even number of them must be on white-squares (so with the original white-squared white bishop, an odd number of them). | |
| Jan 20, 2021 at 5:06 | history | edited | Laska | CC BY-SA 4.0 |
add
|
| Jan 20, 2021 at 4:30 | history | edited | Laska | CC BY-SA 4.0 |
add
|
| Jan 20, 2021 at 3:52 | history | edited | Laska | CC BY-SA 4.0 |
1 word
|
| Jan 20, 2021 at 3:43 | history | edited | Laska | CC BY-SA 4.0 |
expand
|
| S Jan 20, 2021 at 3:41 | history | suggested | CommunityBot | CC BY-SA 4.0 |
give example
|
| Jan 20, 2021 at 3:38 | review | Suggested edits | |||
| S Jan 20, 2021 at 3:41 | |||||
| Jan 19, 2021 at 19:12 | history | edited | Laska | CC BY-SA 4.0 |
shorter
|
| Jan 19, 2021 at 19:04 | history | answered | Laska | CC BY-SA 4.0 |