Joey Stewart wrote: ↑Mon Feb 20, 2023 1:29 pm
Here's a couple of scientific explanations.
1) It could be down to the dyes they put in to make the plastic black giving the pieces a more 'slippery' surface and the glue does not adhere as well to them.
2) black surfaces absorb more heat so the pieces will be slightly warmer then the white ones and this may also account for the weakening of the glue.
But if they want to blame Scandinavian opening players then by all means go ahead - nobody likes those types!
The thermal explanation I had not thought about - scratches head and tries to remember his physics degree stuff. The pawns will be exactly the same temperature in the bag or box whether white or black (weighted or not) and indeed wood will be at the same temperature as plastic. Mind you if you don't look in the bag or box you can't let that particular cat out.
Once in play the heat inputs are mainly conduction (board and hand), convection in the air and radiant from lights/heat sources. The colour theoretically only affects the absorption of radiant heat but the distinctions break down so even if just finger tips touch a pawn the close hand is still radiating heat towards the pawn. I feel some thermal imaging experiment is needed here as I can't begin to guess the magnitude of the effects.
Thinking about a thermal explanation also brings up the issue of mass and surface area and is that a factor in pawns suffering more or is it the larger pieces press differently on their felts or move less? Perhaps picking a piece up and putting it down again has an effect compared to sliding a piece ('drag queen chess')? Pawns hang around for the endgame whereas bad bishops get exchanged?
Having nothing better to do (!) I did a bit of research on piece movement - the usual lazy way by Googling it -
https://chess.stackexchange.com/questio ... statistics This is fascinating from 2012; it appears to rule out individual pawns moving more than other pieces but I Immediately I noticed a comment: '
Extremely cool results

I overestimated the numbers, so glad I asked. My favourite fun-fact from this is that black tends to move his king and pawns, in the expense of the other pieces. Thanks! –
Ramon Snir
Jun 30, 2012 at 15:20'
The table in the post is this one
White piece moves
-----------------
P: 7.7708 total moves, .9714 per pawn
N: 5.1677 total moves, 2.5838 per knight
B: 4.6259 total moves, 2.3130 per bishop
R: 4.6985 total moves, 2.3493 per rook
Q: 3.5775
K: 3.1718
Black piece moves
-----------------
P: 7.7998 total moves, .9750 per pawn
N: 5.1576 total moves, 2.5788 per knight
B: 4.3511 total moves, 2.1756 per bishop
R: 4.5364 total moves, 2.2682 per rook
Q: 3.4869
K: 3.2875
Conclusion - I must research data mining in chess.