6k1/p2pp2p/bp4n1/q1r4R/1RP1P3/2P2B2/P2Q2P1/4K3 w - - bm Rd5; c0 "Rd5=10, Rf5=6, g4=7"; id "STS(v4.0) Square Vacancy.001";
Q7/2pq3k/1rp2b1p/2R5/8/1P1NP3/P2K1Pr1/5R2 w - - bm Qf8; c0 "Qf8=10, Qa4=5, Rc2=4"; id "STS(v4.0) Square Vacancy.025";
q5k1/p2p2bp/1p1p2r1/2p1np2/6p1/1PP2PP1/P2PQ1KP/4R1NR b - - bm Qd5; c0 "Qd5=10, Re6=4, a5=1, c4=2"; id "STS(v4.0) Square Vacancy.026";
3rk3/2p1r1p1/7q/p1p1P1R1/2B4P/4P3/PPQ5/6K1 w - - bm Qe4; c0 "Qe4=10, Kg2=4, b3=3"; id "STS(v4.0) Square Vacancy.039";
r5k1/1q4b1/6n1/3pp1Nn/1N3p2/3P2Pp/2QBP2P/1R4K1 w - - bm Qc5; c0 "Qc5=10, Nxh3=4"; id "STS(v4.0) Square Vacancy.053";
2rqrbk1/1b1n1p2/p2p1npp/1p6/4P2B/1B3NNP/PP1Q1PP1/3RR1K1 w - - bm Qf4; c0 "Qf4=10, Re2=3, a3=1, a4=2"; id "STS(v4.0) Square Vacancy.057";
5b1k/r7/Pq5p/2p5/3p3N/R2Q2P1/5PK1/8 w - - bm Qf5; c0 "Qf5=10, Ng6+=2, Qf3=8, Qg6=2"; id "STS(v4.0) Square Vacancy.061";
7r/q3kp2/2rp1p2/3RpPb1/1p2P1P1/1P1N4/P4R1P/1K2Q3 b - - bm Qa3; c0 "Qa3=10, Kd7=2"; id "STS(v4.0) Square Vacancy.085";
4r1k1/1rp2ppp/p3b3/1n1p4/1q1P1B2/1P3P1P/P1Q3P1/3RRNK1 w - - bm Qc6; c0 "Qc6=10, Ne3=4, Qd2=5, Qd3=5, Qf2=3"; id "STS(v4.0) Square Vacancy.088";
7k/ppr1qpb1/1n2pN1p/4P1p1/8/1B3QP1/PP3PKP/4R3 w - - bm Qh5; c0 "Qh5=10, Re2=3, Re3=1, h3=2"; id "STS(v4.0) Square Vacancy.097";
Neat improvement. From 74 to 90/100 in single version update. This score really surpasses many strong freewares. Did you tune the evaluation parameters with the goal to score more in test suite or did you just impart knowledge into it? Wondering how much elo this version would be relative to the previous one though!