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In this video lesson, GM Igor Smirnov shares with you 5 key ideas to calculate effectively during your chess games. You will learn from beginner-level concepts and gradually climb to advanced-level so that you can calculate more complex positions/variations.

These calculation tips will teach you how to solve puzzles easily, how to find tactics in your games, and how to calculate efficiently and effectively. Most importantly, you will learn how top Grandmasters like Magnus Carlsen calculate variations effectively in their games.

At the end of this calculation training, you will be challenged with an interesting puzzle. Try to calculate all possible variations and find the winning shot!

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► Chapters

00:00 How to calculate in chess? [5 tips]

00:28 Example-1

00:51 Tip-1: Evaluate material

01:17 How to find candidate moves in a position?

04:09 Example-2

05:00 Tip-2: Calculate till the end of the forcing line

05:39 Example-3 (this is how Grandmasters think)

06:28 Tip-3: Use your positional understanding

09:18 How to improve your positional understanding?

09:59 Example-4

10:11 Tip-4: Don’t let your opponent’s king escape

11:57 Example-5

12:57 Tip-5: Try to make tactics work somehow

13:52 Test your calculation skills with this puzzle

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Bxf7 check , Kxf7 , Qh5 check , g6 , f5xg6 double check , Ke8 , g6xh7 discovered checkmate

That's the most forcing checkmate, it's all checks

But however if black king runs to e6 after f5xg6 check

There is :

Qg4 check , Kd5 , Rd1 check , Kc4 , Qe2 checkmate

My brain cells are dying 😂

Qd5, hitting the black Queen and threatening checkmate on f7. So QxQ is forced, then Nc7 #

3:26 In the first example, Nxg3 actually blunders mate in one: Qxh7#.

4:10 Bxh6 is devastating, because accepting the sacrifice with xh6 leads to Nf6+, forcing Kh8, and there is no way to stop Qe4 … Qh7#. Black should therefore decline the sacrifice, but remains down a pawn, and has a terrible position.

11:58 Qe2+ forces Kc1, and Bxf4 threatens Qd2#, Qe1+ Rxe1 Rxe1#, and Bxg4, implying that white's best move is Qxf7+.

13:53 Nc7+ forces Qxc7, then Bxf7+ forces Kxf7, then Qd5+ forces Ke8, Qe6+ forces Be7, allowing Qxe7#.

Nc7, Qxc7, Bxf7, Kxf7, Qd5?

qd5

Bxf7+

K×f7

Qh5+

g6

f×g6+

Ke8 /kg8

g×h7#/g×h7+

R×h7

Qf7+

Kh8

Q×f8+

N×f8

R×f8#

On example 4 (timestamp 11:34)

After Qg6, what's White's idea if Bd7?

The winning continuation is : 1.Nc7+ Qxc7 2. Bxf7+ Kxf7 3. Qd5+ Ke8 4. Qe6+ Be7 5. Qxe7#

The solution of the last puzzle can be 1.Qh5 threatening mate, if blackplays g6 then 2.fxg6 any pawn of black captures(f or h pawn)3. Bf7 is mate since rook supports the bishop.

I am not sure about the answer, if any one finds it please reply me.

► Chapters

00:00 How to calculate in chess? [5 tips]

00:28 Example-1

00:51 Tip-1: Evaluate material

01:17 How to find candidate moves in a position?

04:09 Example-2

05:00 Tip-2: Calculate till the end of the forcing line

05:39 Example-3 (this is how Grandmasters think)

06:28 Tip-3: Use your positional understanding

09:18 How to improve your positional understanding?

09:59 Example-4

10:11 Tip-4: Don't let your opponent's king escape

11:57 Example-5

12:57 Tip-5: Try to make tactics work somehow

13:52 Test your calculation skills with this puzzle

Awesome timing of this video 👌👍😊

Truly appreciate your help.

What openings would recomend me to play at 1450 elo level?

puzzle 2 pawn did not have to capture another variation was to move king

Final position is interesting. Looks like a Sicilian, Sozin variation where Black has played …b4 to chase away the Nc3 and then grab on e4. The solution is quite fun: 1.Nc7+! (forcing move, King cannot move) Qxc7 2.Bxf7+! (forcing move, again only one reply) Kxf7 3.Qd5#.

Interestingly, I think Black saw this. In the diagram, the last move was Qc7-c6, trying to cover d5. It looks like Black could just take the knight with …axb5, but that would allow Bxf7+ and Qd5# immediately. So Black saw the threat and tried to stop it, but 1.Nc7+! pulls the Queen away from d5 immediately. Must have been very satisfying to play as White!

bishop takes f7, king takes and then with queen h5 is check-mate whatever he does. if he block with the pawn we just take it and mate with the rook in the back rank. I am not sure if it is correct, because this is what I saw at first glance.

11:26 In Tip-4 task there is mistake! Black King can escape. Qg3-g6, Re7-f7. Bh6:g7+, Kf8-e7 and he has escaped 🙂

Final Puzzle Solution: 1. Qd4 Qxd4 2. Nx3#. else 2. Qxf7#

Thank you so much for this lesson GM Igor

Man, why are all the puzzles in the Sicilian Defence nowadays…

Anyways, to keep it short:

1. Nc7+ Qxc7 2. Bxf7+ Kxd7 3. Qd5#

I tried calculating 2. Qd5 immediatly but that fails to 2… Nxg5!, and if 3. Qxa1 I think there is 3… Nf6 trapping the queen and the game is even if not black is better

Thanks for the great video!

Solution to final puzzle: 1.Nc7+ Qxc7 2.Bxf7+ Kxf7 3.Qd5+ Ke8 4.Qe6+ Be7 5.Qxe7#

I used all your tips to solve it! (I hope I'm correct.)

Queen d5 wins!

Nc7#

T4 has a problem 1. Qg6 Bd7 2. Qh7 Rf7

Hey, I figured em all out ! Where's my cookie ?

My solution is Nc7+, Qxc7, Bxf7+, Kxf7, Qd5#

On puzzle 1 I did not evaluate the pieces, I just looked for mate, saw what was prevented it and required removal. Maybe I will do that piece evaluation if I get better.

at puzzle 3 I immediately saw that g4 traps the knight and didn't even bother calculating Rxh5 lol

lovely puzzle. 1. Nc7+ Qc7 (only move), 2. Bf7+ Kf7(only move), 3. Qd5+ Ke1(only move), 4. Qe6+ Be7+(only move), 5.Qe7++

In the first position if knight takes knight then Qxh7 is fcking checkmate 😢🤣🤣🤣🤣

The solution to the puzzle at the end of the video is as follows:

1.Nc7+ Qxc7; 2.Bxf7+ Kxf7; 3.Qd5+ Ke8; 4.Qe6+ Be7; 5. Qxe7 mate.

I'm happy to say that I solved all the problems quickly. I must be getting better. Thanks, Igor.

man you are an amazing teacher

Just discovered your channel and I've been watching it for couple of days. Tomorrow I have local tournment that I'm looking forward to. As a 1200 player I will try and beat 1600s there. İt's probably unlikely but thanks to your incredible commentary and videos I feel like atleast I can try. Thanks ^^

Qd5 move wins. protects knight and threatens to take black queen. only move is to take white queen, then knight move checkmates black king.

Q d5 force to capture queen then knight c7 check mate

Qd5 Qxd5

Nc7#

I spent 5min calculating Bxf7 Kxf7 Qh5 g6 fxg6 Kg7 Rf7 Kg8 gxh7 Rxh7( king cant take on f7 its protected by the queen) and qh7 mate.

I was stumped by Bxf7 Kxf7 Qh5 g6 fxg6 Kg8 and idk because after gxh7 Rxh7 i guess we are lost. Opened the comments to find some mates in 3😂

qh5 move to threaten checkmate with light square bishop. blocks with pg6, take with pf5 to g6, almost looks like black gets away but bishop threatens checkmate and rook at f1 has an open file to the pawn at f7.

I learn a lot from this channel and it is the BEST teaching channel on YT. Thanks Igor!

1. Nc7, QxC7 (forced)

2. Bxf7, kxf7 (forced)

3. Qd5+, ke8 (forced)

4. Qe6#

In Example-4, if after Qg6, Black plays Bd7 (instead of Nde5), then how can White Checkmate Black?

Final puzzle (Example-6) possible solution,

…Nc7+ Qxc7, Bxf7 Kxf7, Qd5+ Ke8, Qe6+ Be7, Qxe7#!

1.Qd5!!

Nc7+, queen takes, Bf7+, king takes, queen d5 mate. Cool puzzle!

My answer to the puzzle

1.Nc7+ Qxc7

2. Bxf7+ Kfx7

3. Qd5+ Ke8

4. Qe6+ Be7

5. Qe7#

In the first position, if I'm not wrong, Nxg3 isn't followed by the queen taking back, but by Qxh7#.

Puzzle: I will play white Qxd5, Black will be forced to take my queen with his queen, then giving me a chance to checkmate playing white KxC7.

the second example is kind of cooperative. there is a lot of to calculate and evaluate after 1) B:h6 f5! Engine says +3 but you sac a piece for attack and it is not that easy to evaluate (i have found B:h6 and was trying to understand what should i do after f5)

Spoiler to the last puzzle below

.

.

.

1) Nc6+ Q:c6

2) Bf7+ K:f7

3) Qd5+ Ke8

4) Qe6#

I got the first 5 puzzle’s good as a 1500 😊

1.KC6, QXC6 2.BXF7 CK, KXF7 3.QD5 CK, KE8 4.QE6 MATE.