| |
Hagrid public 0.7.56 |
Hagrid private 0.9.36 |
Snitch 1.0.0 |
Importance |
| Boardrepresentation 0x88 |
no
|
yes
|
no
|
-
|
| Boardrepresentation plain 8x8 |
no
|
no
|
yes
|
0
|
| Boardrepresentation bitboard |
yes
|
very few
|
no
|
+
|
| Boardrepresentation attackboards |
yes
|
no
|
no
|
0 |
| Boardrepresentation attacktables |
no
|
no
|
yes
|
+
|
| Boardrepresentation piece lists |
yes
|
yes
|
yes
|
++
|
| Movegen base
|
bitboard, attackboard
|
0x88, ray casting
|
piece lists, tablebased
|
+
|
| Generated moves
|
pseudo valid
|
pseudo valid
|
valid
|
0
|
| Movegen undo
|
yes
|
yes
|
no
|
+
|
| Alpha Beta / PVS
|
yes
|
yes
|
yes
|
+++
|
| PN search
|
no
|
experimental
|
no
|
-
|
| Book
|
yes
|
no
|
yes |
+
|
| Book Learning |
no |
no |
yes |
0 |
| EGTBs
|
yes
|
yes
|
yes
|
+
|
| SEE
|
sometimes
|
no
|
no
|
0
|
| Checks in qsearch
|
no
|
no
|
yes
|
0 |
| Lazy eval
|
yes
|
yes
|
yes |
+
|
| Futility pruning
|
yes
|
yes
|
yes |
+
|
| Special eval based pruning
|
no
|
no
|
yes
|
++
|
| Hashtable
|
Single (depth)
|
Single (depth)
|
Double (depth, allways)
|
+++
|
| Pawn hash
|
yes (basic)
|
yes (pawn + king)
|
yes (basic)
|
0
|
| Moveorder killer
|
yes
|
yes
|
yes
|
+
|
| Moveorder history
|
yes
|
yes
|
yes
|
+
|
| Moveorder SEE
|
no
|
no
|
no
|
0
|
| Moveorder MVV/LVA
|
yes
|
yes
|
yes
|
++
|
| Moveorder knowledge based |
no
|
yes (basic)
|
yes
|
+
|
| Fail high reductions
|
yes
|
yes
|
kind of |
+
|
| QS pruning |
yes
|
yes
|
yes
|
++
|
| Null move
|
yes (R=2)
|
yes (R= 3,2)
|
yes (R=3,2) |
+++
|
| Internal iterative deepening
|
no
|
yes
|
no
|
+
|
| Aspiration search
|
yes (sophisticated)
|
yes (sophisticated) |
yes
|
++
|
| Endgame evaluation
|
basic
|
sophisticated
|
basic
|
+
|
| Very sophisticated extensions
|
no
|
yes
|
no
|
0
|
| ETC
|
no
|
yes
|
no
|
-
|
| Eval piece square
|
yes
|
yes
|
yes |
+ |
| Eval square control
|
no
|
no
|
yes
|
++
|
| Eval pawns
|
yes
|
yes (sophisticated)
|
yes
|
++
|
| Eval king safty
|
yes (basic)
|
yes (psq based)
|
yes (attack based)
|
++
|
| Eval rook
|
yes
|
yes
|
yes |
+
|
| Eval bishop
|
yes
|
yes
|
yes
|
+
|
| Eval material
|
yes
|
yes
|
yes
|
++++
|
| Singular extensions
|
no |
no |
no |
- |
| nps XP 1700
|
700kn/s |
800kn/s |
300kn/s |
|
| Estimated Elo
|
2250
|
2300
|
2350 |
|
|