双玉詰将棋
双玉詰将棋 (そうぎょくつめしょうぎ) is the shogi problem that not only the king of how to take but also the king of the attack is placed.
Because the king of the attack exists, you must warn the possibility that one's king including the crosscheck is taken.
Table of contents
History
It is said that a prewar avenue shogi problem included the shogi problem with two balls, but the establishment as the genre of 双玉詰将棋 is after the war.
It is Tsuneo Kato first to have devised 双玉詰将棋. Kato is a former encouragement member, and it is said that I thought from the experience that a crosscheck is done in game of go at that time and was defeated by.
Kato contributed after the war 双玉詰将棋 to the shogi problem paradise where did not have the foundation of a periodical room, but Mitsuo Koseki contributed 双玉詰将棋 (Koseki called it "a compound shogi problem") for the same period, too. Only a work of Koseki with a report was placed with the magazine. However, there were few people indicating the interest in this form.
Kato made questions for 双玉問題 as an avenue shogi problem. Because failure to become lively existed, a many avenue shogi problems shop made questions, and a lot of problems were made with the space "which a ball had stolen" in comparison with a normal shogi problem in that.
The avenue shogi problem was not seen, but 双玉詰将棋 is established as one of the genres and even specialized magazines are estimated as a normal work equally and are placed.
Authors of modern representative 双玉詰将棋 include Hiromitsu Kanki. Kamiyoshi performed the questions to a newspaper of 双玉詰将棋 and the issue of anthology.
In a sense two balls are
It is common to keep some kind of meanings to a piece appearing in the problem for a shogi problem. A meaning of the balls of the attack in 双玉詰将棋 includes the following things.
Crosscheck
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| ▲There is no captured piece |
It can prevent limiting a hand of the attack and from continuing a check by how to take sprinkling a check to a ball of the attack.
I can tell you to be existing implication from an infantility of 双玉詰将棋 that the crosscheck is reporting process and Mitsuo Koseki of the creation of Tsuneo Kato and appears.
In a report of Koseki, the crosschecks are classified in three ways.
- Hit the piece; and a check
- Difference check
- Move a piece; and a check
When I move a rook in a figure and do a check,
- ▲4 二飛成 is △ 3 two Katsura
- ▲3 三飛成 is a △ 1 one coins
- ▲2 三飛成 is △ silver
I ask it, and the gap becomes the crosscheck, too.
Establishment of the specific placement
Looking announces the smoke filling "space" of 双玉 Tanaka Arabian bird in 1960. Smoke filling included a condition "to locate all pieces first", but it was brought by a thought to put the ball of attacks in these "all pieces". It may be said that it is implication of the existence of the new ball irrelevant to a crosscheck.
▲ 5 nine ball is located necessarily to display the pieces at the time of the start of the normal shogi to 7-9 steps of eyes with the work called the attack actual fighting first form.
Other
The following things have been really made as other implication.
- I beat and am keeping walking
- Because a ball of the attack beats when a block does 歩, and it is for keeping walking, how to take comes to have to choose other guards. There are few examples.
I use this well, and there is "the Judgment" in the work which caused controversy in the rule. - Work
- Except a strong dragon, horse, the diagonal piece which can work behind is only a ball aside. The fewness of this blind spot may be used.
- Limit of the movement
- The ball cannot move a check by oneself at such a position. I guide a ball to the obstructive position using this.
Problem to include two pieces of balls on one
It cannot be a rule of the current shogi that one has plural balls. Thus, one does not have plural balls by the normal shogi problem.
Fairy shogi problem
By the fairy shogi problem, a thing with a ball of how to take as a plural number exists. The conditions (which "cutting down at least one ball" "takes all the balls") of the answer are written jointly at the time of questions.
The Crown Prince, drunkenness elephant
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| ▲Captured piece Katsura Katsura incense The Daisuke Ohara "old-fashioned crops" |
The Crown Prince whom there is in middle shogi is a piece with work same as a ball. Therefore, plural balls are equal to being when there is the Crown Prince or the drunkenness elephant which can become on the board. In this case you must squeeze all balls and Crown Prince in a rule.
Because the Crown Prince and the drunkenness elephant are not used in current shogi, I am not used by a current normal shogi problem, but may be located in the shogi during above-mentioned fairy shogi problem shop filling.
The work which a drunkenness elephant was used for really includes "the old-fashioned crops" (1707 right figure of) of Daisuke Ohara. Because a drunkenness elephant becomes right after a ball checkmated it by this problem, how to attack must let you checkmate the Crown Prince after having taken the ball. This work takes the ball on the way, but does not use the ball which I took as a person kept in reserve.
When there are a ball and the Crown Prince for how to attack in 詰中将棋, a ball may be taken if the Crown Prince stays. Thus, "the check is possible by a ball, too".
Allied item
This article is taken from the Japanese Wikipedia 双玉詰将棋
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