It's because of this:
[d]8/8/5kBp/7P/5K2/8/r4P2/8 b - -
Found 145 tablebases
34/51 0:03 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Re1 82.Kd5 Kf4 83.Bf7 Re5+ 84.Kd4 Re7 85.Bg6 Rd7+ 86.Kc4 Rd2 87.Bf7 Ke5 (2.688.888) 764 TB:28.695
35/40 0:03 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Re1 82.Kd5 Kf4 83.Bf7 Re5+ 84.Kd4 Re7 85.Bg6 Rd7+ 86.Kc4 Rd2 87.Bf7 Ke5 (3.038.374) 842 TB:31.435
36/44 0:03 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke6 Rh2 83.Ke5 Rh1 84.Ke6 Re1+ 85.Kd5 Kf4 86.Bf7 Re5+ 87.Kd4 Re7 (3.278.156) 893 TB:33.025
37/45 0:03 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd7 83.Ke6 Rd1 84.Ke7 Re1+ 85.Kd6 Re2 86.Kd5 Kf4 87.Kd4 Rd2+ (3.482.953) 936 TB:34.457
38/47 0:03 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd7 83.Ke6 Rd1 84.Ke7 Re1+ 85.Kd6 Re2 86.Kd5 Kf4 87.Kd4 Rd2+ (3.542.996) 947 TB:34.798
39/47 0:04 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd7 83.Ke6 Rd1 84.Ke7 Re1+ 85.Kd6 Re2 86.Kd5 Kf4 87.Kd4 Rd2+ (3.944.739) 883 TB:38.414
40/45 0:05 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd7 83.Ke6 Rd1 84.Ke7 Re1+ 85.Kd6 Re2 86.Kd5 Kf4 87.Kd4 Re5 (4.065.523) 724 TB:39.772
41/45 0:06 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd7 83.Ke6 Rd1 84.Ke7 Re1+ 85.Kd6 Re2 86.Kd5 Kf4 87.Kd4 Re5 (4.981.434) 722 TB:47.571
42/52 0:06 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd7 83.Ke6 Rd1 84.Ke7 Re1+ 85.Kd6 Re2 86.Kd5 Kf4 87.Kd4 Re1 (5.012.380) 725 TB:47.660
43/52 0:07 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd7 83.Ke6 Rd1 84.Ke7 Re1+ 85.Kd6 Re2 86.Kd5 Kf4 87.Kd4 Re1 (5.182.216) 732 TB:49.106
44/50 0:07 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd7 83.Ke6 Rd1 84.Ke7 Re1+ 85.Kd6 Re2 86.Kd5 Kf4 87.Kd4 Re1 (5.547.379) 760 TB:52.036
45/52 0:08 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd7 83.Ke6 Rd1 84.Ke7 Re1+ 85.Kd6 Re2 86.Kd5 Kf4 87.Kd4 Rd2+ (6.929.477) 783 TB:63.522
46/50 0:08 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd1 83.Ke4 Re1+ 84.Kd4 Re7 85.Kd5 Re3 86.Kd4 Rh3 87.Ke4 Rh4+ (6.949.826) 783 TB:63.601
47/53 0:09 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd1 83.Ke4 Re1+ 84.Kd4 Re7 85.Kd5 Re3 86.Kd4 Rh3 87.Ke4 Rh4+ (7.321.364) 773 TB:67.405
48/52 0:10 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf4 82.Bf7 Re5 83.Bg6 Re3 84.Kc5 Re1 85.Kd5 Rd1+ 86.Kc4 Kg5 87.Kc3 Rd7 (8.023.203) 775 TB:73.657
49/57 0:10 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Rd2+ 82.Ke5 Rd1 83.Ke4 Rh1 84.Ke5 Rh4 85.Ke6 Rf4 86.Kd5 Rf1 87.Ke5 Kg4 (9.128.404) 841 TB:82.791
50/54 0:12 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf4 82.Bf7 Re1 83.Kd5 Re5+ 84.Kd4 Re2 85.Bg6 Rd2+ 86.Kc5 Ke5 87.Kc4 Rd4+ (11.404.568) 881 TB:100.302
51/58 0:13 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kg4 85.Kd4 Kf4 86.Bf7 Re1 87.Kd5 Re2 (12.461.367) 936 TB:104.925
52/58 0:13 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kg4 85.Kd4 Kf4 86.Bf7 Re2 87.Bg6 Re7 (13.370.943) 958 TB:111.279
53/57 0:14 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd4 Re2 86.Kd5 Rd2+ 87.Kc5 Rh2 (13.791.545) 937 TB:116.857
54/58 0:17 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd4 Re2 86.Kd5 Rd2+ 87.Kc5 Rh2 (17.369.436) 1021 TB:145.024
55/59 0:18 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd4 Re2 86.Kd5 Rd2+ 87.Kc5 Kg5 (20.431.763) 1124 TB:160.573
56/64 0:21 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd4 Re2 86.Kd5 Re1 87.Bf7 Re5+ (25.032.544) 1184 TB:197.695
57/59 0:24 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd4 Re2 86.Kd5 Re1 87.Bf7 Kg5 (28.651.598) 1185 TB:222.256
58/63 0:26 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd2 Rd5+ 86.Ke1 Rb5 87.Kd1 Ke5 (30.662.741) 1160 TB:261.869
59/64 0:28 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd2 Rd5+ 86.Ke1 Kg5 87.Ke2 Rd4 (34.762.555) 1223 TB:290.579
60/63 0:33 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd2 Rd5+ 86.Ke1 Kg5 87.Ke2 Rd4 (45.842.287) 1382 TB:339.071
61/66 0:51 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd2 Rd5+ 86.Ke1 Rd7 87.Ke2 Kg4 (96.095.047) 1868 TB:414.164
62/66 1:00 -3.45 74...Rxf2+ 75.Ke3 Rh2 76.Ke4 Rh4+ 77.Kd5 Rf4 78.Be8 Rf2 79.Bg6 Kg5 80.Ke5 Re2+ 81.Kd6 Kf6 82.Kc5 Re5+ 83.Kc4 Kg5 84.Kd3 Kf4 85.Kd2 Rd5+ 86.Ke1 Rd7 87.Ke2 Kg4 (120.104.566) 1993 TB:422.710
A -3.45 position I can't win!
I'm about to be proven wrong in many things I've said, so that's dramatic for me! I can't believe winning from here seems harder than from the black side of 1.g4! I couldn't live with myself if I can't win from a won position, so it's time to get serious...