[HN Gopher] Is pawn promotion to rook or bishop something that i...
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       Is pawn promotion to rook or bishop something that is seen in play?
       (2012)
        
       Author : susam
       Score  : 49 points
       Date   : 2025-10-01 20:48 UTC (6 days ago)
        
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       | beyondCritics wrote:
       | Tim Krabbes blog is recommended for this type of question and in
       | general: https://timkr.home.xs4all.nl/chess2/minor.htm
        
         | zzo38computer wrote:
         | I had known of stalemate (both causing and preventing it), but
         | there are others as they mention there.
         | 
         | One other I think I have read about (I do not entirely
         | remember) is that someone promoted to rook because promotion to
         | queen would have taken more time due to not having a extra
         | queen to promote to so they would have to go to another table
         | to borrow it (or ask the tournament officials for it).
        
       | AtlasBarfed wrote:
       | There are chess puzzlers I've seen where promoting to something
       | besides a queen is necessary to prevent stalemate.
        
       | zippyman55 wrote:
       | There are lots of situations where a promotion to a queen would
       | result in stalemate (draw) so a promotion to rook or other piece
       | gets away form this. I'd say Rook would be most common, but some
       | special (problem?) positions a knight or bishop could solve the
       | problem with a mate or a nice fork. E.g. promote to a night with
       | check and an attack on the opponents queen.
        
         | zippyman55 wrote:
         | Just to pile on, a common trick is to sac a queen for say a
         | minor piece, then after king takes queen, a pawn is promoted to
         | a knight with check and a fork on the queen. After the dust
         | settles, a player is up a minor piece.
        
           | colechristensen wrote:
           | A knight will attack different squares than a queen so
           | promoting to a knight of course makes obvious sense in
           | situations that warrant.
           | 
           | A rook or a bishop attack a subset of squares that a queen
           | does, so why would you ever pick one of them instead of a
           | queen? To avoid the stalemate where your opponent is not in
           | check but has no legal moves.
        
         | gus_massa wrote:
         | For not proffesional players (i.e. me) when there are only one
         | or two pawn and the kings, it's better to get a rock.
         | 
         | With a queen it's too easy to make a mistake and get a draw
         | because the other player can't move.
        
       | jmclnx wrote:
       | I think it can happen. The big question, how often a player at a
       | high level gets to a point where a promotion can happen ?
       | 
       | For highly rated players, I think a resignation would occur
       | before a promotion happens. So in general, promotions themselves
       | are rare.
       | 
       | Now me, the only way I would win is to promote 3 pawns to 3
       | queens, and even then ... :)
        
         | neaden wrote:
         | That all depends on time control. If you watch Titled Tuesday
         | for instance you'll see plenty of games where a player promotes
         | and their opponent doesn't concede hoping to get a stalemate or
         | a dirty flag.
        
           | NitpickLawyer wrote:
           | There's a very chill streamer named Eric Rosen that does
           | stalemate tricks at all levels, and it's surprising how often
           | he gets them to work (even with super GMs from time to time).
        
         | bluGill wrote:
         | Resignation is a signal that you know your opponent knows how
         | to win so why waste everyone's time playing it out. For high
         | level players you can be confident they know how to win but
         | there might be more than 100 moves left in the game, so not
         | wasting time playing out a losing game is the polite thing.
         | 
         | When playing someone low rated your opponent isn't good enough
         | to think they can win unless there are less than 3 moves left
         | so you may as well just play the rest of it out at that point.
         | Even then, if you are in a simple (rook?) endgame if the low
         | rated player makes a couple right moves you can assume they
         | know the remaining moves so is it worth wasting your time to
         | prove it?
        
       | jasonhong wrote:
       | Lichess has a series of puzzles you can try where underpromotion
       | is the theme (which is unfortunately a major giveaway to solving
       | these puzzles, since they otherwise be rather hard to solve)
       | 
       | https://lichess.org/training/underPromotion
        
       | dimator wrote:
       | It's super exciting when it does happen, just from the rarity
       | aspect. Here's one: https://youtu.be/z6jKBaVSOLw
        
       | mellosouls wrote:
       | Under-promotion is the sort of thing streamers like ChessBrah
       | will do to opponents who refuse to resign, just to rub their nose
       | in it.
        
       | dkarl wrote:
       | I played chess for only a few years, at a low level, and I
       | encountered situations where underpromotion to a bishop or rook
       | was necessary to win. It's possible it is more common at the
       | just-above-beginner level than at the elite level, because a
       | player in a losing position will play on longer and try to set up
       | stalemate traps that would be pointless in higher-level games.
        
         | Ethee wrote:
         | The unspoken assumption here would be promoting to rook or
         | bishop "instead of a queen" and as the post points out other
         | than avoiding the stalemate situation there doesn't appear to
         | be a logical reason for doing this.
        
           | wat10000 wrote:
           | It probably wouldn't ever happen in a real game, but I think
           | it's possible to be in a situation where you're still losing
           | after promoting to a queen, but underpromoting to a bishop
           | forces a stalemate by leaving you with no legal moves no
           | matter what your opponent plays in response.
        
       | porkbrain wrote:
       | [delayed]
        
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