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Chess Squares Most Often Moved To Graph

Chess Squares Most Often Moved To Graph

zzii
Jan 21, 2014, 11:47 PM 0

Chess Squares Most Often Moved To Graph

The squares of this graph represent the squares of a chess board. The a1 square is located at the bottom left corner. The brightness of the squares indicate how often chess pieces were moved there. The brighter the square, the more often chess pieces were moved there.

The data is from 310670 games, consisting of 74425971 piece moves, played by 230 well known players. The games were obtained from pgnmentor.com/files.html on 19 July 2013. An unknown number of these games are duplicates. Castling moves were noted only by the squares to which the kings moved, not by the squares to which the rooks moved.

I compiled this data to find out if the 4 centre squares (d4, d5, e4, e5) were the most moved to, and to find out if the lesser moved to squares "evenly leave the centre or not" in a circular way.

The most moved to squares were d4 and d5, followed by f6, then e4 and e5.
The 10 most moved to squares (d4, d5, f6, e4, e5, f3, c4, c3, c5, c6) form the shape of the letter K.
The g file stands out from the f and h files.
All four corner squares were the least moved to, although there were 13% more moves made to a8 and h8 on black's side than to a1 and h1 on white's side.
The graph is somewhat symetrical vertically, however b5 and g5 are slightly brighter than their vertically mirroring squares b4 and g4.
There were 6% more moves to squares on black's side than on white's side.
There were 4% more moves to squares on the queen's side than on the king's side.
Of all the games, 103726 were won by white, 70190 were won by black, 136671 were drawn and 83 were marked with an asterisk (*) character. 15080 pawns were promoted to queens, 269 to knights, 133 to rooks, and 60 to bishops.

Number of moves to square (chess board formation)

8   104020   186870   315821   333428   320057   243869   375468   102538  
7 115913 255622 297258 562183 525755 229483 311360 123649
6 327409 386692 645298 523210 575914 815495 394909 275922
5 342956 474910 677495 920725 763563 493866 450594 293012
4 349289 438713 691196 971391 780763 508075 391374 299026
3 246166 385933 687896 470772 522363 741433 369450 245813
2 106448 187101 289226 480179 447051 218694 263215 111285
1 089417 172921 296253 329636 298024 207845 352714 093729
  a b c d e f g h

Number of moves to square (descending order)

d4 971391
d5 920725
f6 815495
e4 780763
e5 763563
f3 741433
c4 691196
c3 687896
c5 677495
c6 645298
e6 575914
d7 562183
e7 525755
d6 523210
e3 522363
f4 508075
f5 493866
d2 480179
b5 474910
d3 470772
g5 450594
e2 447051
b4 438713
g6 394909
g4 391374
b6 386692
b3 385933
g8 375468
g3 369450
g1 352714
a4 349289
a5 342956
d8 333428
d1 329636
a6 327409
e8 320057
c8 315821
g7 311360
h4 299026
e1 298024
c7 297258
c1 296253
h5 293012
c2 289226
h6 275922
g2 263215
b7 255622
a3 246166
h3 245813
f8 243869
f7 229483
f2 218694
f1 207845
b2 187101
b8 186870
b1 172921
h7 123649
a7 115913
h2 111285
a2 106448
a8 104020
h8 102538
h1 093729
a1 089417

Sean Newlands
20140120

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