600 longest positions from matetrack (mate in 16 to mate in 126) https://github.com/vondele/matetrack . Found mates in 10 second with 6 cores:
SF11 288
SF18 268
SF19 243
For comparison Huntsman 443.
Mate solving test SF19, SF18 and SF11.
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Jouni
- Posts: 3918
- Joined: Wed Mar 08, 2006 8:15 pm
- Full name: Jouni Uski
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Jouni
- Posts: 3918
- Joined: Wed Mar 08, 2006 8:15 pm
- Full name: Jouni Uski
Re: Mate solving test SF19, SF18 and SF11.
Stockfish 19 surprises by solving some classic positions very fast.
[d]3qk3/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1
Analysis by Stockfish 19:
...
1.e4 Qd6 2.d4 Qg6 3.Qf3 Qf7 4.Bb5+ Ke7 5.Bg5+ Kf8 6.Bh6+ Ke7 7.Qg3 Kd8 8.Qd6+ Kc8 9.Bf4 Qa7 10.Ba6+ Qxa6 11.Qc7#
+- (#11) Depth: 51/24 00:00:15 71308kN
[d]3qk3/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1
Analysis by Stockfish 19:
...
1.e4 Qd6 2.d4 Qg6 3.Qf3 Qf7 4.Bb5+ Ke7 5.Bg5+ Kf8 6.Bh6+ Ke7 7.Qg3 Kd8 8.Qd6+ Kc8 9.Bf4 Qa7 10.Ba6+ Qxa6 11.Qc7#
+- (#11) Depth: 51/24 00:00:15 71308kN
Jouni
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mysammoore
- Posts: 6
- Joined: Mon Aug 31, 2026 6:21 pm
- Full name: Sam Moore
Re: Mate solving test SF19, SF18 and SF11.
As long as there are consistent checks, I would always imagine an HCE engine to out-calc mate lines vs. an NNUE unless the HCE was very slow. Mate lines are far more factual than eval-driven. Honestly the stronger the NNUE the weaker I'd expect it to perform under this test scenario.