From: Reijer Grimbergen yz yamagata-u ac jp> Date: 22 nov 2006 Subject: This week in Shukan Shogi (no. 1169, October 18th 2006) In this report the starting game of the Ryu-O match between Watanabe and Sato. This game was played in San Francisco. It was already quite an interesting game, but without putting too much pressure on myself to quickly do the other games, this is just an appetizer. The second and third game of this match are absolute crackers. Unless one of the two players crumbles in the rest of the match, this might become a legendary encounter. Here is the first game with comments: [Black "Sato Yasumitsu, Challenger"] [White "Watanabe Akira, Ryu-O"] [Event "19th Ryu-O sen, Game 1"] [Date "October 10th and 11th 2006"] 1.P7g-7f 00:00:00 00:00:00 2.P8c-8d 00:00:00 00:01:00 3.P2g-2f 00:04:00 00:01:00 4.G4a-3b 00:04:00 00:06:00 5.G6i-7h 00:07:00 00:06:00 6.P8d-8e 00:07:00 00:13:00 7.B8h-7g 00:07:00 00:13:00 8.P3c-3d 00:07:00 00:14:00 9.S7i-8h 00:07:00 00:14:00 10.B2bx7g+ 00:07:00 00:15:00 11.S8hx7g 00:07:00 00:15:00 The first game of the Ryu-O match starts with a classic Kakugawari opening. Unlike the recently popular Kakugawari with tempo loss, the theory of the "normal" Kakugawari is very deep. The game follows the NHK tournament game between Matsuo and Watanabe for a long time. 12.S3a-4b 00:07:00 00:15:00 13.P9g-9f 00:08:00 00:15:00 14.P9c-9d 00:08:00 00:18:00 15.P1g-1f 00:10:00 00:18:00 16.P1c-1d 00:10:00 00:20:00 17.S3i-3h 00:11:00 00:20:00 18.S7a-7b 00:11:00 00:21:00 19.P3g-3f 00:30:00 00:21:00 20.P6c-6d 00:30:00 00:36:00 21.K5i-6h 00:32:00 00:36:00 22.S7b-6c 00:32:00 00:37:00 23.N2i-3g 00:33:00 00:37:00 24.S6c-5d 00:33:00 00:49:00 25.P4g-4f 00:34:00 00:49:00 26.P4c-4d 00:34:00 00:50:00 27.S3h-4g 00:38:00 00:50:00 28.G6a-5b 00:38:00 00:50:00 29.G4i-5h 00:57:00 00:50:00 30.K5a-4a 00:57:00 00:52:00 31.S4g-5f 01:00:00 00:52:00 32.K4a-3a 01:00:00 00:55:00 33.K6h-7i 01:02:00 00:55:00 34.P7c-7d 01:02:00 00:56:00 35.P6g-6f 01:03:00 00:56:00 36.N8a-7c 01:03:00 01:01:00 37.P2f-2e 01:05:00 01:01:00 38.S4b-3c 01:05:00 01:01:00 39.P4f-4e 01:22:00 01:01:00 40.P4dx4e 01:22:00 01:03:00 41.P3f-3e 01:22:00 01:03:00 42.P6d-6e 01:22:00 01:39:00 43.P6fx6e 01:31:00 01:39:00 44.S3c-4d 01:31:00 01:51:00 45.P2e-2d 02:29:00 01:51:00 46.P2cx2d 02:29:00 01:52:00 47.P1f-1e 02:31:00 01:52:00 48.N7cx6e 02:31:00 02:45:00 49.P*2b 03:19:00 02:45:00 50.G3bx2b 03:19:00 02:48:00 51.B*6d 03:50:00 02:48:00 52.R8b-8a 03:50:00 03:45:00 The sealed move. There are two alternatives here: 52.R9b or 52.R8a. Watanabe didn't play 52.R9b because he didn't like 53.Sx6e Sx6e Px1d. This gives black a strong attack on the edge, and the rook on 9b has not much force in a counter attack. However, Sato said in the post-mortem that he intended to play 53.S6f after R9b. He expected 54.G6c B9g and the game gets relatively quiet. The opinion in the press room was that Watanabe would not play 54.G6c because this would put the gold to far away from the king. It is hard to say who was right here, but it is interesting that both players looked at very different things. This will be a theme in the rest of this game and maybe in the rest of this match and one of the reasons the shogi world has been expecting a lot from this match. Habu and Sato have played so many matches against each other that their perception of the game has become very similar and often seems at a level difficult to understand for others. There is little chance that this will happen with Watanabe, who is known for his down-to-earth thinking and behavior. 53.S7g-6f 03:53:00 03:45:00 54.P8e-8f 03:53:00 03:48:00 55.P8gx8f 03:55:00 03:48:00 56.P*8h 03:55:00 04:07:00 57.G7hx8h 04:24:00 04:07:00 58.P*6g 04:24:00 04:43:00 59.P*6i 04:55:00 04:43:00 60.P*8e 04:55:00 05:21:00 61.P8fx8e 05:00:00 05:21:00 62.P1dx1e 05:00:00 05:22:00 63.G5hx6g 05:21:00 05:22:00 64.G2b-3b 05:21:00 05:33:00 65.P*2c 05:26:00 05:33:00 66.G3bx2c 05:26:00 05:37:00 67.P*2e 05:31:00 05:37:00 68.P2dx2e 05:31:00 05:37:00 69.B6d-7c+ 05:34:00 05:37:00 70.S4dx3e 05:34:00 06:35:00 Watanabe thought quite a long time about playing 70.P*8f, but decided against it because of 71.+Bx7d G6c +Bx6c Sx6c G*4c and he felt white was losing. However, when this variation was played in the post-mortem analysis, Sato's face indicated that he thought this was a very hard variation to play. He didn't think the black attack was strong enough. Instead, he had planned 71.N7g Nx7g+ G8hx7g or Sx7g. "If so, I would have dropped the pawn", was Watanabe's prompt reaction. Again a difference of opinion, but it seems that Watanabe is right here. For example, if white plays Sx3e after G*4c, then Nx2e strongly threatens P*3c and B*4f P*2d Gx2d Rx2e! is a very strong sacrifice. Because black has a pawn on 6i, he can give up the rook for a strong attack. 71.+B7c-7b! 06:23:00 06:35:00 With so many captures and other powerful looking moves, it is easy to overlook a quiet move like this. Watanabe was taken by surprise by the bishop maneuvering in this game (from 6d to 7c to 7b). 71.S5fx6e is not good because of 72.Sx6e Sx6e P*8g Gx8g Rx8e forking gold and silver. 72.R8a-5a? 06:23:00 07:07:00 The point of 71.+B7b is that because of 72.Rx8e N9g R8f P*8g the knight on 6e is easier to capture than before. Still, moving the rook to 5a is an important mistake. Better was 72.R4a, which gives the rook more attacking power. This move is difficult to play because of S5fx6e followed by N*6d which attacks the undefended gold on 5b. However, after 72.S5fx6e Sx6e Sx6e P*6f Gx6f B*3i! is a strong bishop drop because R5h is answered by P4f, bringing the rook on 4a in play. Therefore, it seems that black has to play R6h and after Bx5g+ P*5h +B4f P*4g or K7h the position is unclear. 73.S5fx6e 06:25:00 07:07:00 74.S5dx6e 06:25:00 07:07:00 75.S6fx6e 06:25:00 07:07:00 76.P*6f 06:25:00 07:07:00 77.G6gx6f 06:46:00 07:07:00 78.P*8g 06:46:00 07:11:00 79.G8hx8g 06:57:00 07:11:00 80.P*8f 06:57:00 07:11:00 81.G8gx8f 06:58:00 07:11:00 82.B*5i 06:58:00 07:12:00 83.R2h-8h! 06:58:00 07:12:00 This is a difficult move to play, because it leaves the knight on 3g for white to pick up. This knight on 3g is an important attacking piece in the Kakugawari and giving it up often leads to entering king possibilities. In the press room 83.+B7c Bx8f+ N*4c Gx4c +Bx5a was analyzed, which is good for black, but if white plays 84.R7a instead of +Bx8f then after +B8b Bx8f+ +Bx7a P*8h white is behind in material but has a strong attack that seems hard to stop. Sato has seen this and has judged that saving the gold on 8f is more important than the knight on 3g. After 84.+Bx3g, black will win quickly with 85.N*6d G4b P*4c etc. 84.S*7g 06:58:00 07:28:00 Watanabe tries a desperate attack, but Sato is too good a player to allow his young opponent back into the game. 85.N8ix7g 07:01:00 07:28:00 86.B5ix7g+ 07:01:00 07:28:00 87.N*7h 07:07:00 07:28:00 88.P9d-9e 07:07:00 07:32:00 89.P9fx9e 07:10:00 07:32:00 90.P*9f 07:10:00 07:39:00 91.S*6h 07:12:00 07:39:00 92.+B7gx8f 07:12:00 07:40:00 93.R8hx8f 07:14:00 07:40:00 94.L9ax9e 07:14:00 07:43:00 95.P*9h 07:28:00 07:43:00 96.P*6d 07:28:00 07:43:00 97.S6ex6d 07:29:00 07:43:00 98.P7d-7e 07:29:00 07:55:00 99.P7fx7e 07:30:00 07:55:00 100.S3e-4f 07:30:00 07:59:00 101.N3gx2e 07:31:00 07:59:00 102.R5a-9a 07:31:00 07:59:00 103.P*3c 07:38:00 07:59:00 104.K3a-2b 07:38:00 07:59:00 105.S*3b 07:41:00 07:59:00 106.N2ax3c 07:41:00 07:59:00 107.S3bx2c+ 07:44:00 07:59:00 108.K2bx2c 07:44:00 07:59:00 109.N2ex3c+ 07:44:00 07:59:00 110.K2cx3c 07:44:00 07:59:00 111.+B7bx4e 07:48:00 07:59:00 Resigns 07:48:00 07:59:00 Watanabe resigned because black has many devastating attacking moves like N*2e while the black rook on 8f works perfectly in defense, giving white no access to the black king. Still, after the post-mortem analysis, Watanabe came in the press room and when he saw a computer screen with the final position he asked: "Why not first 111.N*2e and then +Bx4e?". A different opinion about the position until the very end... This is going to be a very interesting match. -- Reijer Grimbergen Department of Informatics, Yamagata University Jonan 4-3-16, Yonezawa, 992-8510 Japan Tel: +81-(0)238-26-3740 FAX: +81-(0)238-26-3299 http://gamelab.yz.yamagata-u.ac.jp/ --^---------------------------------------------------------------- This email was sent to: shogi-l shogi net EASY UNSUBSCRIBE click here: http://topica.com/u/?a2i6Ys.aBsjvI.c2hvZ2kt Or send an email to: shogi-unsubscribe topica com For Topica's complete suite of email marketing solutions visit: http://www.topica.com/?p=TEXFOOTER --^----------------------------------------------------------------