WEBVTT 00:01.160 --> 00:01.730 Hi there. 00:03.350 --> 00:11.630 I just want to introduce you to the notion of this covert attack now, I discovered the tag, if it's 00:11.870 --> 00:16.540 resulting in check, is actually often called a discovered check. 00:17.390 --> 00:25.100 So the thing about discoveries is that sometimes you apply move and it looks as though you should just 00:25.100 --> 00:27.940 be looking at what that particular move does. 00:28.340 --> 00:35.600 But in fact, you should be looking at the whole position all the time because sometimes moves open 00:35.600 --> 00:37.870 up all the pieces. 00:38.300 --> 00:44.900 Now, here, white play, can you see, is this a very, very bad state of affairs or Rook's attacked 00:45.920 --> 00:47.260 the opponents of Queen up? 00:49.040 --> 00:53.540 Is it very, very sad or is there a silver lining here that we can use? 00:53.930 --> 00:57.200 If I give you five seconds pause video, what do you think we can do here? 01:00.530 --> 01:05.360 OK, we can actually play move which shields? 01:07.600 --> 01:14.320 That rock and so we've showed it on rock and it's also check. 01:14.560 --> 01:21.350 So actually we're going to be up here after the opponent moves, the queen, moves the king, rather. 01:21.430 --> 01:24.030 We're going to take the queen and we're going to be up. 01:24.040 --> 01:24.760 We're going to be winning. 01:25.900 --> 01:31.870 So sometimes you have to look at the whole possession, the discovery of facts. 01:33.790 --> 01:39.430 If, by the way, you know, we had moved here, then Rook takes Rook says that's that's not as good. 01:39.970 --> 01:44.800 So we want to shield the rock and create this lovely discovered check. 01:45.040 --> 01:47.500 It's a form of this covert attack. 01:48.220 --> 01:53.340 It's more dramatic quite often, in my view, for discovered check. 01:54.280 --> 01:55.930 Actually, it really depends on the example. 01:55.930 --> 02:04.360 There are some really dramatic examples where, you know, whatever excites you, but here this is the 02:04.360 --> 02:05.410 basic mechanism. 02:05.980 --> 02:10.900 So quite often, you know, you're just looking at what the opponent's moves. 02:11.710 --> 02:12.690 That's the mistake. 02:12.700 --> 02:14.110 You're going to look at the whole position. 02:14.650 --> 02:18.670 If they move, especially a pawn in the center, you know, they might vote, not the bishop. 02:18.670 --> 02:24.550 The rook say, you know, in theory, you know, a pawn move from 845. 02:24.550 --> 02:25.690 I hope you can visualize this. 02:26.230 --> 02:29.800 Rook might have been open to age for a bishop, might be able to age seven. 02:30.070 --> 02:37.000 So there's all these discovery effects of a pull move that could be potentially discovered attacks. 02:37.540 --> 02:40.960 You know, by moving a pawn, you could be attacking something over there. 02:41.230 --> 02:42.820 You could be attacking something over there. 02:43.060 --> 02:44.920 Depends on where your pieces are. 02:47.100 --> 02:51.250 So here you go, Bishop, every check and we winning the queen. 02:51.660 --> 02:57.090 So for me actually is kind of one of my golden principles of calculation when you calculate in your 02:57.090 --> 02:58.170 mind's eye. 03:00.670 --> 03:01.700 Moves ahead. 03:02.230 --> 03:07.260 You're not just looking at the move and thinking, well, what does that move threaten? 03:07.420 --> 03:08.640 Like you might move a pawn. 03:08.650 --> 03:10.970 You say, what does that pawn threaten? 03:11.410 --> 03:12.070 No. 03:12.250 --> 03:16.990 In fact, you've got to look at the weaknesses of the last move, the king of common squares and the 03:16.990 --> 03:18.360 discovery of facts. 03:18.970 --> 03:25.960 So if you move a pawn, especially in the center, they often do liberates other pieces and create the 03:26.290 --> 03:29.720 potential potentially discovered attacks. 03:30.280 --> 03:34.920 So you've got to like factor in this covert attacks, even in your mind's eye. 03:36.600 --> 03:43.600 That, you know, definitely when you move a piece or pawn or move a piece of pawn, don't just be magnified 03:43.630 --> 03:45.210 to just that section of the board. 03:45.210 --> 03:50.790 You might have opened up something subtly say the opponent played for them out of subtlely. 03:50.790 --> 03:51.480 I'm not a bishop. 03:51.480 --> 03:54.810 Across the insides, I take on exposing an attack against your king. 03:55.170 --> 03:56.400 So discovered. 03:57.750 --> 04:04.020 You know, attacks discovered to tackle this kind of attack, it's a very, very powerful, subtle thing, 04:04.020 --> 04:07.760 almost as if it's a secret that's been unveiled on the chessboard. 04:07.950 --> 04:12.420 And the problem with a lot of interfaces, they have great big arrows or what the opponents you've lost 04:12.690 --> 04:15.150 and you don't see these sometimes these discovery effects. 04:15.330 --> 04:17.720 You've got to have a vision of the whole board. 04:18.270 --> 04:23.200 What exactly has been liberated from the last move? 04:23.760 --> 04:26.310 OK, but we're going to have a look at some concrete examples. 04:26.660 --> 04:28.790 This is just an intro, intro, lecture. 04:29.400 --> 04:34.130 I hope you got the point about discoveries a little bit and then we'll look at some examples, OK? 04:35.010 --> 04:35.500 That's right.