by John Power, special Japan correspondent for the E-Journal
Yamashita Keigo becomes Honinbo challenger: Yamashita Keigo 9P turns 40 on September 6 this year, but he is still a
member of a small top group that functions in Iyama Yuta’s shadow. At present, the other candidates for membership would be Murakawa Daisuke and Ichiriki Ryo, and players like Shibano Toramaru and Yo Seiki are vying to join it; Cho U (see next news item) is hoping to rejoin it. Members of this group were active in the final round of the 73rdHoninbo League. As the round started, on April 5, three players were still in the running to become the challenger: Yamashita, Ko Iso 8P, and Ida Atsushi 8P. The possibility of a tie, requiring a play-off, seemed quite high, but Yamashita beat Ko and Ida lost his game, so Yamashita won the league outright on 5-2.
Results follow: Yamashita (W) beat Ko Iso by resig.; Shibano (W) beat Ida by resig.; Yo (W) beat Kobayashi Satoru 9P by resig.; Motoki Katsuya (W) beat Hane Naoki 9P by resig.
The most disappointed of these players could be Ida, who won his first four games, taking the sole lead, then fizzled out with three losses. In contrast, Yamashita had reason to be happy, because he started out with two losses in the first three rounds and must have thought he was out of the running. Ko Iso (4-3) came second and retained his place because of his original ranking at no. 4. Motoki (3-4), Hane (2-5, and Kobayashi (2-5) all lost their places, but on the day there was no third- or fourth-place getter in the league. It’s a long time since this last happened. In 1999, there was a play-off among three players for one seat; the last time three players competed for two seats was in 1972. It became less likely in 1978, as in that year the system of ranking players according to their results in the previous league was adopted; only the four “newcomers,” all ranked #5, could now figure in such a tie. That’s what happened this year, presumably for the first and only time. Three of the league newcomers, equally ranked at no. 5, tied on 4-3, so there was a complicated play-off. This was decided by drawing lots to offset the unfairness of the fact that one player will get two chances. First, on April 12, Ida played Shibano; taking white, the latter won by 4.5 points, so Shibano keeps his place. Ida will play Yo on April 2, with the winner getting the fourth place. Yo drew the booby prize, that is, he gets just one chance. The title match starts on May 15.
Cho U takes sole lead in Meijin League: The first game in the fifth or April round of the 43rd Meijin League was played on April 5. Taking black, Cho U 9P (B) beat Kono Rin 9P by resignation. A second game was played on April 12, with 
Yamashita Keigo 9P (W) beating Ko Iso 8P by resig. Cho now has the sole lead in league, though his nearest rival, Shibano Toramaru 7P, can join him if he wins his fifth-round game. Perhaps Cho is finally coming out of his slump of recent years. Usually the league is dominated by the top-ranked players, but this year they are doing badly. Numbers 1 to 3 are Takao, Yamashita Keigo, and Murakawa Daisuke 8P; Takao and Murakawa are on 1-3, which comes close to putting them out of contention for the challengership, and Yamashita is on 2-3. No. 5 Kono is on 2-2, and no. 6, Ko Iso 8P, is on 1-2. The two newcomers to the lead besides Shibano are Hane Naoki 9P, on 3-1, which puts him in third place, and Yo Seiki 7P on 1-3.
8th Huanglongshi Cup starts: The 8th Huanglongshi Cup, a team tournament for five-woman teams from China, Korea, and Japan, got off to a start in Taizhou City on April 9. Unlike the Nong Shim Cup, two games a day are played on the first two days, then one on the third day, then two on the fourth, making a total of seven games in the opening round. The time allowance is one hour per player, followed by byo-yomi of one minute per move. The first round was dominated by Li He of China, who scored five wins. The second round starts on June 5.
(April 9) Nyu Eiko 2P (Japan) (W) beat O Cheonga 3P (Korea) by resig.; Li He 5P (China) beat Nyu.
(April 10) Li beat Kim Miri 3P (Korea); Li beat Xie Yimin 6P (Japan)
(April 11) Li beat Kim Tae 3P (Korea)
(April 12) Li beat O Keii 3P (Japan); O Yujin 5P (Korea) beat Li.
Iyama defends Judan: The third game of the 56th Judan title match was held at the Kuroyon Royal Hotel in Omachi City, Nagano Prefecture, on April 12. Taking white, Iyama 
Yuta (right) won by 4.5 points after 234 moves. Iyama has now won this title three years in a row and for the fifth time overall. The defeated challenger Murakawa Daisuke (left) commented: “Compared to the previous two games, this one was the most regrettable.” In other words, he has some winning chances. According to the Go Weekly commentary, the game was even after the first major fight, involving a ko, ended in a large-scale trade, but in a subsequent border fight, Iyama found a clever move that secured more territory than the spectators had been counting for him. The Grand Champion tournament doesn’t seem to be counted as an official title, so the Judan is Iyama’s 51st title. Incidentally, he has now won 17 games in a row in title matches.
participated ranging from 7D to 24K. Players traveled from Dallas, Houston, Edinberg, Tx and other points closer.
AlphaGo Zero vs. Master with Michael Redmond 9p: Game 8
Saturday April 14, 2018
Michael Redmond 9p, hosted by the AGA E-Journal’s Chris Garlock, reviews the eighth game of the new AlphaGo Zero vs.
Master series.
“Zero just doesn’t care about its opponent’s moyo,” says Redmond. “It can do anything inside the moyo. Human pros who have tried to emulate this strategy have just crashed almost every time. Miserably. But Zero has no trouble dealing with its weak groups, so in this game we’re going to see a lot of dancing around inside Master’s moyo. Plus a really weird endgame.” Redmond also has some interesting observations about the similarities — and differences — between top human players and AI players.
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