Hi,
indeed Crystal is the winner. Latest version 4.1 solves it on my old 2cores laptop in less than 1sec !
Code:
Crystal 4.1
0:04/15-29, 1/21: 4.Ba5+, 2,9M nodes (635K nps), 128MB hash, 2 threads
0:00: -1.86/10 4.Bc5+ Kc7 5.Ne8+ Kb7 6.Nxf6 Qb5 7.b4 Qa6 8.Kf4 Qxa3 9.Ke5 Qb3 10.f4
0:00: +7.16/11 4.Ba5+ Kxa5 5.Nc4+ Kb5 6.Kf4 f5 7.Kg5 f4 8.f3 Qxa3 9.Nxa3+ Kb4 10.Nc4 Kxb3 11.Na5+ Ka4 12.Nxc6 a6 13.Kxf4 Kb5 14.d5 a5
0:01: +8.60/12 4.Ba5+ Kxa5 5.Nc4+ Kb5 6.Kf4 f5 7.Kg5 f4 8.f3 Qxa3 9.Nxa3+ Kb4 10.Nc4 Kc3 11.Ne5 Kxd4 12.Nxc6+ Kc3 13.Kg4 a6 14.b4
0:01: +8.54/13 4.Ba5+ Kxa5 5.Nc4+ Kb5 6.Kf4 Qxa3 7.Nxa3+ Kb4 8.Nc4 a6 9.Kf5 Kc3 10.Kxf6 Kxd4 11.f4 c5 12.f5 Kc3 13.Ke5
0:01: +8.50/14 4.Ba5+ Kxa5 5.Nc4+ Kb5 6.Kf4 f5 7.Kg5 f4 8.f3 Qxa3 9.Nxa3+ Kb4 10.Nc4 a6 11.Ne5 Kb5 12.Kg4 Kb4 13.Nxc6+ Kc3
Many programs struggle to find the best move.
Other programs I found that succeeded in a short time:
Critter 1.6a in 2s
Capture R01 in 7s
Deep Shredder 12 in 9s
Comet B68 in 14s
The King 3.12 (CM8000) in 15s
Rebel 6 in 21s
Komodo 13.01 MCTS in 66s
Schönen Gruß,
Eric