Timeline for The Biggest Chess Blunder
Current License: CC BY-SA 4.0
22 events
| when toggle format | what | by | license | comment | |
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| Apr 8, 2023 at 22:11 | history | edited | Rewan Demontay | CC BY-SA 4.0 |
Making clear how the score is arrived at for others
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| Apr 5, 2023 at 20:00 | comment | added | loopy walt | @thisIs4d Where does this 26 come from? Each of the 7 white pawns had a black pawn in front of them. IIRC to create a passed pawn you have to (1) remove the opposing black pawn by (a) capturing it or (b) it capturing something or (2) sidestep it which requires the white pawn to capture something. 1a and 2 combined can create two white passed pawns with a single capture (so you could have 8 white passed pawns with 28 pieces still on the board) but if you want to retain or promote all black pawns option 1a is not available and if you want to retain all black pieces then only option 1b remains. | |
| Apr 5, 2023 at 18:47 | comment | added | thisIs4d | @loopywalt clever solution! are you sure the remaining black knight won't fit? because 7 passed pawns can allow 26 pieces, black pieces being 16 in total (i.e. with no black capture)... If its possible, then we can move both the black bishops to b1 and c1, and place second black knight on g5, increasing the score by +3 making it 159. 159 is anyways a theoretical upper bound, which in case would be strict. | |
| Apr 5, 2023 at 9:50 | history | edited | loopy walt | CC BY-SA 4.0 |
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| Apr 5, 2023 at 9:29 | history | edited | loopy walt | CC BY-SA 4.0 |
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| Apr 5, 2023 at 4:18 | vote | accept | ApexPolenta | ||
| Apr 4, 2023 at 15:36 | history | edited | ACB | CC BY-SA 4.0 |
Correct link
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| Apr 4, 2023 at 14:53 | history | edited | Glorfindel | CC BY-SA 4.0 |
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| Apr 4, 2023 at 11:30 | comment | added | thisIs4d | @loopywalt yes, having 7 white passed-pawns ensures 6 captured pieces, and since we would have 25 pieces, that would do. So this adds +3 making it 150 | |
| Apr 4, 2023 at 11:22 | comment | added | loopy walt | @thisIs4d Actually, you can just replace the white pawn h6 with a white knight. It not being a pawn alone frees up one piece, so you can add that black knight on b3. | |
| Apr 4, 2023 at 11:11 | comment | added | thisIs4d | @loopywalt oh yes you are right. still there's one more piece which can probably be replaced somehow. i.e. white pawn on h6, which is only used to block the checks, instead we could have used a black knight / black bishop, but have to figure out some other configuration to make it forced for black | |
| Apr 4, 2023 at 10:45 | comment | added | loopy walt | @thisIs4d I'm pretty sure that would make it an unreachable position because to get all the white pawns past all the black pawns 8 pieces must already have been captured and there are already 24 pieces on the board. | |
| Apr 4, 2023 at 10:31 | comment | added | thisIs4d | @loopywalt In the new variant, you can add a black Knight at b3, to get +3, making the score 150 | |
| Apr 4, 2023 at 9:54 | history | edited | loopy walt | CC BY-SA 4.0 |
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| Apr 4, 2023 at 9:31 | history | edited | loopy walt | CC BY-SA 4.0 |
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| Apr 4, 2023 at 8:11 | comment | added | thisIs4d | @loopywalt, can you consider following changes in the first solution above: 1. White queen on a8. 2. White rook on a6. 3. Black queen on a5. Rest is the same as shown above. Now if 1...Qa1, 2 Rxa1, you get your original solution with a +4 score, i.e. 123 | |
| Apr 4, 2023 at 7:21 | comment | added | loopy walt | @bass I didn't work out the exact sequence as it seems obvious that black can just activate as many of their queens as needed checking the white king in every move. | |
| Apr 4, 2023 at 7:14 | comment | added | loopy walt | @thisIs4d I don't know how to do it while keeping black's moves forced. | |
| Apr 4, 2023 at 6:24 | comment | added | Bass | What's the move sequence in the "black could easily win with 1. ... Qh8xh7+" variation? Looks like the white king starts to run out of squares really fast. | |
| Apr 4, 2023 at 4:49 | comment | added | thisIs4d | I wonder why you didn't consider 8 queens instead in the first case above, wouldn't that increase the score to 136 (stalemate & checkmate can be avoided considering black king to blunder again)? Also, its good that both are possible situations in a chess game. | |
| Apr 4, 2023 at 4:20 | history | edited | loopy walt | CC BY-SA 4.0 |
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| Apr 4, 2023 at 3:49 | history | answered | loopy walt | CC BY-SA 4.0 |