From: Reijer Grimbergen yz yamagata-u ac jp> Date: 04 sep 2006 Subject: This week in Shukan Shogi (no. 1156, July 19th 2006) Starting the Oi match with the first game between Habu and Sato. Interesting theoretical battle with some very high class shogi techniques. Here is the game with comments: [Black "Sato Yasumitsu, Challenger"] [White "Habu Yoshiharu, Oi"] [Event "47th Oi-sen, Game 1"] [Date "July 12th and 13rd 2006"] 1.P7g-7f 00:00:00 00:00:00 2.P3c-3d 00:00:00 00:02:00 3.P2g-2f 00:02:00 00:02:00 4.P4c-4d 00:02:00 00:09:00 5.P2f-2e 00:05:00 00:09:00 6.B2b-3c 00:05:00 00:10:00 7.S3i-4h 00:05:00 00:10:00 8.P9c-9d 00:05:00 00:13:00 9.G4i-5h 00:11:00 00:13:00 10.R8b-4b 00:11:00 00:32:00 11.K5i-6h 00:11:00 00:32:00 12.S3a-3b 00:11:00 00:40:00 13.K6h-7h 00:11:00 00:40:00 14.S3b-4c 00:11:00 00:41:00 15.P5g-5f 00:17:00 00:41:00 16.S7a-7b 00:17:00 00:43:00 17.S4h-5g 00:34:00 00:43:00 18.P9d-9e 00:34:00 00:45:00 19.P3g-3f 00:49:00 00:45:00 20.K5a-6b 00:49:00 00:59:00 21.P3f-3e 00:55:00 00:59:00 22.R4b-3b 00:55:00 01:14:00 23.P4g-4f 01:00:00 01:14:00 24.P3dx3e 01:00:00 01:24:00 25.P4f-4e 01:02:00 01:24:00 26.G4a-5b 01:02:00 01:26:00 27.P4ex4d 01:03:00 01:26:00 28.S4c-3d 01:03:00 01:28:00 29.R2h-4h 01:06:00 01:28:00 30.R3b-4b 01:06:00 01:30:00 31.S5g-4f 01:08:00 01:30:00 32.P*4g 01:08:00 01:33:00 33.R4hx4g 02:12:00 01:33:00 34.B3cx4d 02:12:00 01:41:00 35.B8hx4d 03:13:00 01:41:00 36.R4bx4d 03:13:00 01:43:00 37.B*2b 03:18:00 01:43:00 38.R4d-7d 03:18:00 02:29:00 39.R4g-4h 03:28:00 02:29:00 40.B*3c 03:28:00 02:46:00 41.B2bx3c+ 03:29:00 02:46:00 42.N2ax3c 03:29:00 02:46:00 43.B*6e 03:30:00 02:46:00 44.B*8d 03:30:00 02:46:00 45.S4f-5g! 04:20:00 02:46:00 A long theoretical battle to start this Oi match. This was the sealed move and it is also the first move that has not been played in professional practice before. Sato has prepared well, because it seems that black now gets the advantage. White is attacking, but his attack seems to be running out of steam. 46.N3c-4e 04:20:00 03:20:00 47.S5g-6f 04:50:00 03:20:00 48.R7d-6d 04:50:00 03:27:00 49.B6e-3b+ 04:54:00 03:27:00 50.R6dx6f 04:54:00 03:39:00 51.P6gx6f 04:54:00 03:39:00 52.B8dx6f 04:54:00 03:39:00 53.R4h-4g 04:58:00 03:39:00 54.S*5g 04:58:00 04:23:00 55.R*3a 05:22:00 04:23:00 56.S5gx5h= 05:22:00 05:03:00 57.G6ix5h 05:22:00 05:03:00 58.G*5g 05:22:00 05:03:00 59.G5h-6g! 05:39:00 05:03:00 Great defense. After 60.Gx4g Gx6f white has no good attack with the rook, while black is threatening a devastating S*8b. Also, after 60.Gx6g Rx6g Bx9i+ G*8b black has an unstoppable attack. If black manages to drop something on 8b, white is lost. These variations made Sato very confident about his position here. After the game, he admitted that he was so sure that black was better here that he was very surprised that the position actually appeared on the board. 60.B6f-9c! 05:39:00 05:14:00 Habu shows that there is still a little life left in his attack. This defends the weak point 8b and also leaves the attacking pieces on the board. 61.R4g-2g? 06:14:00 05:14:00 Habu had feared 61.Gx5g Nx5g+ R4a+ G5b-5a G*8b! which is winning for black after Bx8b +Rx5a etc. Further analysis showed that after G*8b white still can play Gx4a +Bx4a R*4h P*6h Rx4a+ and even though the position is very difficult, white might even be winning. Sato never even considered such a wild approach. After all, he thought the black position was already very good and playing quiet, solid moves would be good enough to win. The difference between Habu and Sato: Habu is always looking for possibilities to get to the enemy king. 62.G5gx6g 06:14:00 05:15:00 63.R2gx6g 06:16:00 05:15:00 64.N4e-5g+ 06:16:00 05:16:00 65.R6g-6e 06:22:00 05:16:00 66.S3d-4c 06:22:00 05:25:00 67.+B3b-2b 06:31:00 05:25:00 68.G*3b 06:31:00 05:33:00 69.+B2bx3b 06:38:00 05:33:00 70.S4cx3b 06:38:00 05:33:00 71.R3ax3b+ 06:39:00 05:33:00 72.B*4c! 06:39:00 05:58:00 If brilliance is the ability to transcend rules, Habu shows time and time again that he is brilliant. 72.B*4c is obviously the wrong move, as black can get out of the fork with tempo by capturing this bishop. The right move is of course 72.B*5d, but there is an important snag: 72.B*5d R3e Bx3b Rx3b+ and the unpromoted rook on 6e has become a promoted rook on 3b. Habu wants to keep the unpromoted rook on the board to attack it later. This sounds simple enough, but the problem is that after 72.B*4c +Rx4c Gx4c it is black to move and with four generals and a bishop in hand there is bound to be some good move. Handing over the initiative to your opponent when he has a pile of pieces in hand is too scary to contemplate even for the strongest shogi professionals. That Habu plays this anyway is the reason he is the best, maybe even the best of all time. But hold your applause, we are not done yet with Habu magic... 73.+R3bx4c 06:46:00 05:58:00 74.G5bx4c 06:46:00 05:58:00 75.P*6h 06:48:00 05:58:00 Despite a hand full of pieces, Sato can't find a good attacking plan. 76.R*3i 06:48:00 06:02:00 77.B*1h? 07:01:00 06:02:00 A mistake, but very hard to see. The best move was probably the unlikely 77.S*2h. Why this unlikely move is good will be explained after the next move. 78.P7c-7d! 07:01:00 06:24:00 Here is another one of Habu's magic moves. One of the most difficult professional concepts to learn for amateur player is the ability to leave your opponent the initiative when there is nothing he can do with it. Habu does this twice in one game and twice he takes Sato completely off guard. By leaving the rook on 6e through 72.B*4c, this rook is now a target for attack. Black has to act quickly, because otherwise white brings the knight into the attack with N7c and the attack that seemed to have run out of steam is suddenly unstoppable. For example, 79.S*2h R3h+ G*3i +R5h G*6i N7c! Gx5h (if the rook moves sideways, white wins with +N6g) Nx6e and the attack on the gold on 5h is still in the position. Now it is also clear why 77.S*2h was better than B*1h. If we now have the same development (78.R3h+ G*3i +R5h G*6i) there is no N7c as a follow-up. Therefore, it seems that white has to settle for 78.Rx2i+ G*3i +N6g Rx6g Bx3i+ Sx3i +Rx3i and black still has everything to play for. When asked after the game about 77.S*2h, both players responded with disbelief. Be this as it may, the difference in this game may have been the ability of Habu to play moves that are not normal, while Sato wasn't able to the same thing. 79.S*4f? 07:56:00 06:24:00 Sato spent 55 minutes on the losing move, but it only makes things worse. Still, the damage has already been done. 80.R3i-4i+ 07:56:00 06:42:00 81.S4fx5g 08:09:00 06:42:00 82.B9cx5g+ 08:09:00 06:42:00 83.G*6g 08:09:00 06:42:00 84.+B5g-4f 08:09:00 06:50:00 85.G*3g 08:09:00 06:50:00 86.N8a-7c 08:09:00 06:52:00 87.R6e-6f 08:09:00 06:52:00 88.S*6e 08:09:00 06:52:00 89.G3gx4f 08:09:00 06:52:00 90.S6ex6f 08:09:00 06:52:00 91.G6gx6f 08:09:00 06:52:00 92.R*5i 08:09:00 06:52:00 Resigns 08:09:00 06:52:00 The only reasonable defense against this double rook attack is 93.S*8h, but then R6i+ K7g Rx4f+ leaves black without hope, so Sato resigned here. Losing from a position he thought was very good for him, if not winning, must have been a serious psychological blow for Sato. Can he recover in time for the second game in which he has the white pieces? -- 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.bnuqMa.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 --^----------------------------------------------------------------