Opus 5 has now broken four conjectures in the 181:204 block: #42 (152), #43 (154), #39 (155), #40 (156), #41 (204). The block header (ΣE≤ΣD) has been breached. The kite construction for #43 may generalize: the same structural insight — combining a dense core with a long thin extension to exploit opposing mathematical forces — could apply to neighboring conjectures. Leads 142 and 143 (in the preceding block) and 195 (in this block) are under active attack. The block-by-block approach means each disproof illuminates its neighbors.