Deep Abyss, Wide Sea No. 265 · Ma Yuan Sweeps the North

Nine records whose printed line does not hold

11 moves

渊深海阔 (1808), 第265局 马援扫北. The record claims mate by continuous checks in 6 moves, and the printed line does mate. It is not forced: at move 5 the defence has e9f9, which the record does not give, and after it there is no continuous-check mate within six moves of the recorded lengt…