Trying out the latest 'Deep Ripper' (Version 1.0) to get us past +3. The position is totally not important but it is maybe interesting for some, all these new versions, there is a Sun15 as well. (Stockfish meanwhile also was updated in the last few hours.)
37.De4 Df2
[d]7k/p5p1/1p5p/8/1P2Q2P/P7/1KP2qP1/8 w - -
Engine: Deep Ripper -1- (1024 MB)
gemaakt door EN and Stockfish developers (see AUTHORS
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75/133 976:41 +3.08 38.Da8+ Kh7 39.De4+ Kh8 40.Kb3 Df7+
41.Dc4 Dd7 42.Kb2 Df5 43.Dd4 De6
44.Df4 De1 45.Df8+ Kh7 46.Df5+ Kh8
47.Df4 Kg8 48.g3 Kh8 49.Dd6 Kg8
50.Dd8+ Kh7 51.Dd3+ (40.606.502.541) 692
76/126 1017:58 +3.08 38.Da8+ Kh7 39.De4+ Kh8 40.Kb3 Df7+
41.Dc4 Dd7 42.Kb2 Df5 43.Dd4 De6
44.Df4 De1 45.Df8+ Kh7 46.Df5+ Kh8
47.Df4 Kg8 48.g3 Kh8 49.Dd6 Kg8
50.Dd8+ Kh7 51.Dd3+ (42.199.114.738) 690
77/115 1051:59 +3.03-- 38.Da8+ Kh7 (43.501.836.796) 689
77/115 1053:29 +3.00-- 38.Da8+ Kh7 (43.565.270.956) 689
77/115 1055:06 +2.96-- 38.Da8+ Kh7 (43.632.821.253) 689
77/115 1076:5 1+3.01++ 38.Da8+ (44.445.602.153) 687
77/115 1083:37 +2.90-- 38.Da8+ Kh7 (44.686.390.416) 687
77/117 1150:41 +3.07 38.Da8+ Kh7 39.De4+ Kh8 40.Kb3 Df7+
41.Dc4 Dd7 42.Kb2 Df5 43.Dd4 De6
44.Df4 De1 45.Df8+ Kh7 46.Df5+ Kh8
47.Df4 Kg8 48.g3 Kh8 49.Dd6 Kg8
50.Dd5+ Kh8 51.Dd8+ (47.254.524.934) 684
78/124 1503:10 +3.13 38.Da8+ Kh7 39.De4+ Kh8 40.Kb3 Df7+
41.Dc4 Dd7 42.Kb2 Df5 43.Dd4 De6
44.Df4 De1 45.Df8+ Kh7 46.Df5+ Kh8
47.Df4 Kg8 48.g3 Kh8 49.Dd6 Kg8
50.Dd5+ Kh8 51.Dd8+ (61.983.873.119) 687