WEBVTT 00:01.050 --> 00:01.860 Hi there. 00:01.890 --> 00:08.790 In this lecture, we see an amazing game as the banker now against an anonymous player in 1924, a simultaneous 00:08.790 --> 00:09.480 display. 00:09.920 --> 00:14.490 So now a very, very strong player playing for his country in Olympiads. 00:14.520 --> 00:16.170 You can look him up on wiki. 00:16.410 --> 00:20.850 So E4 from Esteban Canal. 00:20.880 --> 00:29.850 We have the five Scandinavian or centre counter as it used to be known as e tanks D five Queen 60 59c3 00:30.150 --> 00:40.830 Queen a5d4 C6 might have three Bishop G4 We have Bishop f4 e6h free. 00:40.860 --> 00:54.030 So black volunteers the Lions Choir, Bishop Queen Tanks, f3, Bishop b4 Bishop e2 97 and here A3 is 00:54.030 --> 00:55.920 played black should have. 00:56.550 --> 01:03.600 It seems just aims castle on the kingside say Knight g f6 and white consoles. 01:03.600 --> 01:08.910 Black could take on C free to double the pawns, but overall white is still better here. 01:08.940 --> 01:11.610 There's a lot of piece play for the structural damage. 01:11.610 --> 01:12.840 It's structural damage. 01:13.140 --> 01:15.390 You've got to look at the compensation, the trade off. 01:15.390 --> 01:20.460 And overall white is better here, but black actually castled queenside. 01:20.490 --> 01:28.980 If we look at that variation just for a moment, if you look at the diagonals of death, there's these 01:28.980 --> 01:29.400 two. 01:29.430 --> 01:34.950 We have to look at the opponent's king and see the so called what I like to call the diagonals of death, 01:34.980 --> 01:40.590 because sometimes these are amazing sources of losses. 01:40.590 --> 01:46.830 Statistically, a lot of games are lost on these diagonals, especially A2 to G quite often. 01:47.190 --> 01:50.940 Some very interesting tactics all the time in every tournament. 01:50.940 --> 01:53.910 Basically, these are so-called default downsides. 01:53.930 --> 01:59.670 I call them defaults because they are you're picking up a lot of points because by default, if Black 01:59.670 --> 02:05.730 Castle was kingside, which is thought to be safer, you have to look out for the tactics on that diagonal. 02:05.730 --> 02:09.390 But here we get Black Castle in queenside. 02:09.390 --> 02:14.070 So we need to establish what are the diagonals of death on the opponent's king. 02:14.070 --> 02:16.620 It's this one and it's this one. 02:16.620 --> 02:21.360 This can be these two can be sources of amazing tactical ideas. 02:22.200 --> 02:31.860 And in fact, in this position, White plays an amazing move here, which demonstrates this with. 02:32.800 --> 02:34.780 You know, great. 02:35.710 --> 02:37.720 A vivid way of demonstrating it. 02:38.050 --> 02:41.650 Really amazing, vivid demonstration is revealed here. 02:41.920 --> 02:44.590 So what you think won't place in this position? 02:45.040 --> 02:49.780 Also, note that it's not just that there's a diagonal of death potentially. 02:49.780 --> 02:54.070 The bishop here is controlling key escape squares. 02:54.520 --> 02:58.240 And if you look at my checkmate course, you know, we should be already excited. 02:58.450 --> 03:05.230 If we have such a situation increases the probability of making the opponent, we should be on the lookout 03:05.470 --> 03:13.630 for amazing combinations more than the general case where we haven't got such a resource pointing around 03:13.640 --> 03:14.580 octave squares. 03:14.590 --> 03:20.050 So whites play here, watch finger white place for 500 points. 03:23.360 --> 03:31.610 Okay tanks before rebelling against the relative pin offering a rock hair queen takes a one check and 03:31.610 --> 03:33.500 now King D2 offering another rock. 03:34.370 --> 03:40.670 Now here Black's best is actually 95 to hit the queen. 03:40.850 --> 03:42.410 Why could simply. 03:44.240 --> 03:47.720 Just take the queen, though, and this is just material up. 03:47.900 --> 03:49.340 At the very least, this is winning. 03:49.340 --> 03:56.240 But even better would be to take the knights and blacks trying to get the bishop away. 03:56.360 --> 03:59.420 And I'll show you why it's very shortly. 03:59.420 --> 04:02.330 So it's actually just loads of material up here. 04:02.630 --> 04:04.940 So that was Black's best. 04:05.120 --> 04:06.980 But Black took on each one. 04:07.490 --> 04:12.080 So why this pedantic ness with these diagonals of death? 04:13.070 --> 04:16.190 Is this, is this diagonal, but not particularly, actually. 04:19.230 --> 04:23.010 But there is one which is, well, by elimination. 04:23.010 --> 04:23.880 What would you play here for? 04:23.880 --> 04:24.830 200 points? 04:24.840 --> 04:31.050 Check all checks, even the seemingly outrageous ones and you'll find Queen C6. 04:31.050 --> 04:31.950 Jack, I hope. 04:33.440 --> 04:40.490 Blacks forced to play be takes and now Bowden style checkmates crisscross and the bishop's Boden's mate 04:40.490 --> 04:41.090 Patton. 04:42.950 --> 04:50.750 But yes, a general points games are continually lost on the diagonals to the opponent's king here. 04:50.780 --> 04:53.790 It's very vivid because this diagram is actually a checkmate. 04:53.900 --> 04:54.500 That's great. 04:54.500 --> 04:58.100 If the title is actually a checkmate like in this case. 04:58.100 --> 05:02.870 But it's a special case because the other bishops contributing towards the mating net. 05:03.230 --> 05:05.840 So a fantastic demonstration that actually. 05:05.840 --> 05:10.670 Yeah, you're going to factor in these diagonals for king safety considerations. 05:12.420 --> 05:16.110 Okay, So have you enjoyed this one so much?