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[Exercise] 1 Dan Challenge
antiquegoblin (1981) ☗0☗0☗02016-12-17 16:27
The following exercise is borrowed from the official webpage of the Shogi Association, players with 1 dan or below may try this to testify their strength, while higher dan players might find them useful for reinforcing their strength:

(original url: http://www.shogi.or.jp/news/2016/11/post_1466.html)

1. https://postimg.org/image/xzepiaqbt/

2. https://postimg.org/image/6dbxxm6yx/

3. https://postimg.org/image/pjtqejcuh/

4. https://postimg.org/image/kz7jzlt55/

5. https://postimg.org/image/aqf2ts53d/

6. https://postimg.org/image/tk0vqs3bd/

7. https://postimg.org/image/k0r6xbft5/

8. https://postimg.org/image/uc3jpz7ih/

9. https://postimg.org/image/a601r3bux/

10. https://postimg.org/image/rkk9zd8zt/

Each question 10 points, one securing 70 points would be qualified as 1 dan or above  :D 
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5: antiquegoblin (1981) ☗0☗0☗02017-01-01 15:15 (2017-01-01 15:16に編集)
Q8) Bx6f
if ... B+x6f, then Rx4a+

Q9) S7e
if ... Sx7e, then Bx7c+

Q10) S*3h

if ... B+x3h, then B5e N*7c (if S*7c, Bx7c+ Nx3c S*9c Kx9c Rx9a+ white is terrible while black has a solid castle; if N*6d, its own powerful lance is blocked) Bx3c+

if ... P6f, then Sx3g Px6g+ Bx5e G*6d Sx6g Gx5e P*6f (lance attack is less powerful and removes an enemy horse, while the gold at 5e is still somehow floating)
4: antiquegoblin (1981) ☗0☗0☗02016-12-30 12:38 (2016-12-30 12:41に編集)
Q6) B*6d
if ... S3f, then Bx7c+ R8a P*5e (Black has a promoted bishop on board and will gain a silver) 
if ... Sx5f, then Bx7c+ R8a P*5g (promoted bishop + 1 silver gain)

Q7) B*2a
if ... G3a, then B4c+ B*5b B+x3d Bx3d S4d
if ... G4b, then Bx5d+ (Gote has no pawns, so Rx5d Sx5d P*5c is not possible)
if ... Nx2e, then S4d (threatening S4c)
3: antiquegoblin (1981) ☗0☗0☗02016-12-30 02:16
I guess each question within 5 minutes would be okay, including intuiting candidate moves, calculation for confirmation and making judgement

Don't push yourself too hard, exercise as such should be fun in nature
2: BarbapappA (1528) ☗0☗0☗02016-12-28 19:17
Thanks! very cool. how long are you supposed to spend on each problem?
1: antiquegoblin (1981) ☗0☗0☗02016-12-23 19:47
Suggested answers:

Q1) P*3c
if ... Gx3c, then N4e, Bx2f, Nx3c=, Nx3c, Rx2f (gold-knight exchange)
if ... Nx3c, then P*3d (gain a knight)
if ... Bx3c, then N4e (bishop-silver fork)
if ... Bx2f, then Px3b+, Kx3b, Rx2f (gain a gold)

Q2) B*4h
if ... R7f or Rx5f, then Gx6h (gain a promoted bishop)
if ... B+x5h, then Bx6f, S3c, Gx5h (lose 1 gold, gain bishop and rook)

Q3) Sx3e?  (need assistance)
if ...Sx3e, then B*5e (King-knight fork, bishop promoted)
but not sure how it would go with ... B*7h

Q4) R6f
if ...R6b, then R6e, attacking the now unguarded pawn at 8e, otherwise rook breaks 6th file

Q5) B*1f the silver cannot be protected

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