count the number of positions reachable from a specific fen (at a specific depth) in a cdb data dump.
for 1. g4:
Exploring fen: rnbqkbnr/pppppppp/8/8/6P1/8/PPPPPP1P/RNBQKBNR b KQkq - 0 1
Max depth: 14
Allowing captures: 0
Opening DB
sequential prepare
Exploring tree
Iteration : 1 starting from 440 fens with 32 pieces
iter time iter count total time total count
236.652 101118900 236.652 101118900
iter DB gets iter DB gets/s total DB gets total DB gets/s
231925710 980029 231926172 980031
ply iter count iter cumulative total count total cumulative
0 1 1 1 1
1 20 21 20 21
2 419 440 419 440
3 5489 5929 5489 5929
4 72949 78878 72949 78878
5 358662 437540 358662 437540
6 1272576 1710116 1272576 1710116
7 3009673 4719789 3009673 4719789
8 5810106 10529895 5810106 10529895
9 9745276 20275171 9745276 20275171
10 12771540 33046711 12771540 33046711
11 15150084 48196795 15150084 48196795
12 16208403 64405198 16208403 64405198
13 17835362 82240560 17835362 82240560
14 18878340 101118900 18878340 101118900
Iteration : 2 starting from 23056232 fens with 31 pieces
iter time iter count total time total count
155.949 60670421 392.988 161789321
iter DB gets iter DB gets/s total DB gets total DB gets/s
135499981 868874 367426153 934956
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 2 2 421 442
3 166 168 5655 6097
4 3938 4106 76887 82984
5 57387 61493 416049 499033
6 294848 356341 1567424 2066457
7 1055335 1411676 4065008 6131465
8 2644475 4056151 8454581 14586046
9 5394936 9451087 15140212 29726258
10 8337753 17788840 21109293 50835551
11 10287433 28076273 25437517 76273068
12 10968682 39044955 27177085 103450153
13 10818584 49863539 28653946 132104099
14 10806882 60670421 29685222 161789321
Iteration : 3 starting from 19568267 fens with 30 pieces
iter time iter count total time total count
88.6883 40426263 482.604 202215584
iter DB gets iter DB gets/s total DB gets total DB gets/s
75075480 846509 442501633 916904
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 1 1 5656 6098
4 71 72 76958 83056
5 3449 3521 419498 502554
6 34613 38134 1602037 2104591
7 206013 244147 4271021 6375612
8 705178 949325 9159759 15535371
9 1930383 2879708 17070595 32605966
10 3577590 6457298 24686883 57292849
11 5801844 12259142 31239361 88532210
12 7349569 19608711 34526654 123058864
13 9551154 29159865 38205100 161263964
14 11266398 40426263 40951620 202215584
Iteration : 4 starting from 9896333 fens with 29 pieces
iter time iter count total time total count
35.7174 15483705 519.193 217699289
iter DB gets iter DB gets/s total DB gets total DB gets/s
28393133 794938 470894766 906973
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 0 0 5656 6098
4 0 0 76958 83056
5 41 41 419539 502595
6 2205 2246 1604242 2106837
7 19952 22198 4290973 6397810
8 102321 124519 9262080 15659890
9 390998 515517 17461593 33121483
10 960578 1476095 25647461 58768944
11 1933294 3409389 33172655 91941599
12 2951651 6361040 37478305 129419904
13 4069279 10430319 42274379 171694283
14 5053386 15483705 46005006 217699289
Iteration : 5 starting from 3415870 fens with 28 pieces
iter time iter count total time total count
10.5908 4598237 530.295 222297526
iter DB gets iter DB gets/s total DB gets total DB gets/s
8009381 756261 478904147 903089
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 0 0 5656 6098
4 0 0 76958 83056
5 0 0 419539 502595
6 55 55 1604297 2106892
7 991 1046 4291964 6398856
8 7954 9000 9270034 15668890
9 42235 51235 17503828 33172718
10 139376 190611 25786837 58959555
11 367785 558396 33540440 92499995
12 728083 1286479 38206388 130706383
13 1314867 2601346 43589246 174295629
14 1996891 4598237 48001897 222297526
Iteration : 6 starting from 877854 fens with 27 pieces
iter time iter count total time total count
2.54959 1091572 533.279 223389098
iter DB gets iter DB gets/s total DB gets total DB gets/s
1862756 730610 480766903 901529
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 0 0 5656 6098
4 0 0 76958 83056
5 0 0 419539 502595
6 0 0 1604297 2106892
7 22 22 4291986 6398878
8 368 390 9270402 15669280
9 3097 3487 17506925 33176205
10 14911 18398 25801748 58977953
11 55669 74067 33596109 92574062
12 143232 217299 38349620 130923682
13 308819 526118 43898065 174821747
14 565454 1091572 48567351 223389098
Iteration : 7 starting from 165444 fens with 26 pieces
iter time iter count total time total count
0.512325 180785 533.961 223569883
iter DB gets iter DB gets/s total DB gets total DB gets/s
304436 594224 481071339 900947
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 0 0 5656 6098
4 0 0 76958 83056
5 0 0 419539 502595
6 0 0 1604297 2106892
7 0 0 4291986 6398878
8 8 8 9270410 15669288
9 115 123 17507040 33176328
10 907 1030 25802655 58978983
11 4963 5993 33601072 92580055
12 17056 23049 38366676 130946731
13 47149 70198 43945214 174891945
14 110587 180785 48677938 223569883
Iteration : 8 starting from 23628 fens with 25 pieces
iter time iter count total time total count
0.0960406 25408 534.121 223595291
iter DB gets iter DB gets/s total DB gets total DB gets/s
41304 430068 481112643 900755
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 0 0 5656 6098
4 0 0 76958 83056
5 0 0 419539 502595
6 0 0 1604297 2106892
7 0 0 4291986 6398878
8 0 0 9270410 15669288
9 1 1 17507041 33176329
10 36 37 25802691 58979020
11 307 344 33601379 92580399
12 1484 1828 38368160 130948559
13 6120 7948 43951334 174899893
14 17460 25408 48695398 223595291
Iteration : 9 starting from 2192 fens with 24 pieces
iter time iter count total time total count
0.0350777 1973 534.206 223597264
iter DB gets iter DB gets/s total DB gets total DB gets/s
3377 96272 481116020 900618
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 0 0 5656 6098
4 0 0 76958 83056
5 0 0 419539 502595
6 0 0 1604297 2106892
7 0 0 4291986 6398878
8 0 0 9270410 15669288
9 0 0 17507041 33176329
10 0 0 25802691 58979020
11 9 9 33601388 92580408
12 76 85 38368236 130948644
13 385 470 43951719 174900363
14 1503 1973 48696901 223597264
Iteration : 10 starting from 97 fens with 23 pieces
iter time iter count total time total count
0.0157288 63 534.264 223597327
iter DB gets iter DB gets/s total DB gets total DB gets/s
113 7184 481116133 900521
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 0 0 5656 6098
4 0 0 76958 83056
5 0 0 419539 502595
6 0 0 1604297 2106892
7 0 0 4291986 6398878
8 0 0 9270410 15669288
9 0 0 17507041 33176329
10 0 0 25802691 58979020
11 0 0 33601388 92580408
12 5 5 38368241 130948649
13 11 16 43951730 174900379
14 47 63 48696948 223597327
Iteration : 11 starting from 13 fens with 22 pieces
iter time iter count total time total count
0.0107763 11 534.31 223597338
iter DB gets iter DB gets/s total DB gets total DB gets/s
21 1948 481116154 900443
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 0 0 5656 6098
4 0 0 76958 83056
5 0 0 419539 502595
6 0 0 1604297 2106892
7 0 0 4291986 6398878
8 0 0 9270410 15669288
9 0 0 17507041 33176329
10 0 0 25802691 58979020
11 0 0 33601388 92580408
12 0 0 38368241 130948649
13 2 2 43951732 174900381
14 9 11 48696957 223597338
Iteration : 12 starting from 3 fens with 21 pieces
iter time iter count total time total count
0.00992937 2 534.355 223597340
iter DB gets iter DB gets/s total DB gets total DB gets/s
3 302 481116157 900368
ply iter count iter cumulative total count total cumulative
0 0 0 1 1
1 0 0 20 21
2 0 0 421 442
3 0 0 5656 6098
4 0 0 76958 83056
5 0 0 419539 502595
6 0 0 1604297 2106892
7 0 0 4291986 6398878
8 0 0 9270410 15669288
9 0 0 17507041 33176329
10 0 0 25802691 58979020
11 0 0 33601388 92580408
12 0 0 38368241 130948649
13 0 0 43951732 174900381
14 2 2 48696959 223597340
Finished all iterations!
Closing DB
This tool requires a working instance of cdbdirect. See the
cdbdirect repo for a description of the
Chess Cloud Database (cdb) and how to access a
local copy.