585
edits
Changes
→Hashing
Perft can receive another speed boost by [[Hash Table|hashing]] node counts, with a small chance for inaccurate results. Sometimes this is used as a sanity check to make sure the hash table and keys are working correctly.
Output of [[Stockfish]] for Perft 5:
<pre>
go perft 5
a2a3: 181046
b2b3: 215255
c2c3: 222861
d2d3: 328511
e2e3: 402988
f2f3: 178889
g2g3: 217210
h2h3: 181044
a2a4: 217832
b2b4: 216145
c2c4: 240082
d2d4: 361790
e2e4: 405385
f2f4: 198473
g2g4: 214048
h2h4: 218829
b1a3: 198572
b1c3: 234656
g1f3: 233491
g1h3: 198502
Nodes searched: 4865609
</pre>
=Divide=
