added 33 characters in body

Source Link

edited Jun 14, 2021 at 17:11

100.3k
13
247
410

Lichess puzzle 87510 has this position.

[FEN "r1b1k3/pp4R1/2q3RQ/4p3/5P2/bP2P3/2P1K2P/8 b - - 0 1"]

The solution is 1...Bg4+,.after which White has 6 legal moves:

1...Bg4+ 2. Rxg4 Qxh6, which is the computer solution, possibly followed by 3. Rg8+ Bf8,
1. Kd3, which is mate in 7,
1. Kd2, which is mate in 8,
1. Ke1, which is mate in 5,
1. Kf1, which is mate in 4, and
1. Kf2, which is mate in 4.

I feel like a human player in a tournament would not calculate the whole decision tree, and probably just intuit that 1...Bg4+ is going to win since black can continue with a range of powerful moves Qf3, Qc2, Rd8, and Bb4 and at least one of them is with check, depending onWhite'son White's response.

Question: How much calculation would a strong player (say an FM+) perform before playing 1...Bg4+?

It's a dangerous movemmove Black begins with an exposed king, with mate threats and a possible rook skewer, and queen attacked, and Black responds by creating an undefended bishop. If the checks ended, Back would probably lose.

PS black has already castled

Lichess puzzle 87510 has this position.

[FEN "r1b1k3/pp4R1/2q3RQ/4p3/5P2/bP2P3/2P1K2P/8 b - - 0 1"]

The solution is 1...Bg4+,.after which White has 6 legal moves:

1...Bg4+ 2. Rxg4 Qxh6, which is the computer solution, possibly followed by 3. Rg8+ Bf8,
1. Kd3, which is mate in 7,
1. Kd2, which is mate in 8,
1. Ke1, which is mate in 5,
1. Kf1, which is mate in 4, and
1. Kf2, which is mate in 4.

I feel like a human player in a tournament would not calculate the whole decision tree, and probably just intuit that 1...Bg4+ is going to win since black can continue with a range of powerful moves Qf3, Qc2, Rd8, and Bb4 and at least one of them is with check, depending onWhite's response.

Question: How much calculation would a strong player (say an FM+) perform before playing 1...Bg4+?

It's a dangerous movem Black begins with an exposed king, with mate threats and a possible rook skewer, and queen attacked, and Black responds by creating an undefended bishop. If the checks ended, Back would probably lose.

Lichess puzzle 87510 has this position.

[FEN "r1b1k3/pp4R1/2q3RQ/4p3/5P2/bP2P3/2P1K2P/8 b - - 0 1"]

The solution is 1...Bg4+,.after which White has 6 legal moves:

1...Bg4+ 2. Rxg4 Qxh6, which is the computer solution, possibly followed by 3. Rg8+ Bf8,
1. Kd3, which is mate in 7,
1. Kd2, which is mate in 8,
1. Ke1, which is mate in 5,
1. Kf1, which is mate in 4, and
1. Kf2, which is mate in 4.

I feel like a human player in a tournament would not calculate the whole decision tree, and probably just intuit that 1...Bg4+ is going to win since black can continue with a range of powerful moves Qf3, Qc2, Rd8, and Bb4 and at least one of them is with check, depending on White's response.

Question: How much calculation would a strong player (say an FM+) perform before playing 1...Bg4+?

It's a dangerous move Black begins with an exposed king, with mate threats and a possible rook skewer, and queen attacked, and Black responds by creating an undefended bishop. If the checks ended, Back would probably lose.

PS black has already castled

deleted 40 characters in body; edited title

Source Link

edited Aug 21, 2020 at 15:26

Rewan Demontay

17.8k
4
69
116

LiChess Lichess puzzle 87510: How much calculation would a strong player do before playing Bg4+ when white has a range of (all losing) responses?

LiChessLichess puzzle 87510 has the followingthis position:.

[FEN "r1b1k3/pp4R1/2q3RQ/4p3/5P2/bP2P3/2P1K2P/8 b - - 0 1"]

The solution is 1...Bg4+1...Bg4+, after.after which whiteWhite has 6 legal moves:

1...Bg4+ 2. Rxg4 Qxh6 1...Bg4+ 2. Rxg4 Qxh6, which is the computer solution (possibly, possibly followed by 3. Rg8+ Bf8)3. Rg8+ Bf8,
2. Kd3, which is mate in 7,
1. Kd3, which is mate in 7,
2. Kd2, which is mate in 8,
1. Kd2, which is mate in 8,
2. Ke1, which is mate in 5,
1. Ke1, which is mate in 5,
2. Kf1, which is mate in 4, and
1. Kf1, which is mate in 4, and
2. Kf2, which is mate in 4.
1. Kf2, which is mate in 4.

I feel like a human player in a tournament would not calculate the whole decision tree, and probably just intuit that 1...Bg4+1...Bg4+ is going to win since black can continue with a range of powerful moves Qf3Qf3, Qc2Qc2, Rd8Rd8, and Bb4,Bb4 and at least one of them is with check, depending on white'sonWhite's response.

Question: How much calculation would a strong player (say an FM+) perform before playing 1...Bg4+1...Bg4+?

It's a dangerous move: blackmovem Black begins with an exposed king (with, with mate threats and a possible rook skewer), and queen attacked, and blackBlack responds by creating an undefended bishop. If the checks ended, blackBack would probably lose.

LiChess puzzle 87510: How much calculation would a strong player do before playing Bg4+ when white has a range of (all losing) responses?

LiChess puzzle 87510 has the following position:

[FEN "r1b1k3/pp4R1/2q3RQ/4p3/5P2/bP2P3/2P1K2P/8 b - - 0 1"]

The solution is 1...Bg4+, after which white has 6 legal moves:

1...Bg4+ 2. Rxg4 Qxh6, which is the computer solution (possibly followed by 3. Rg8+ Bf8),
2. Kd3, which is mate in 7,
2. Kd2, which is mate in 8,
2. Ke1, which is mate in 5,
2. Kf1, which is mate in 4, and
2. Kf2, which is mate in 4.

I feel like a human player in a tournament would not calculate the whole decision tree, and probably just intuit that 1...Bg4+ is going to win since black can continue with a range of powerful moves Qf3, Qc2, Rd8, and Bb4, and at least one of them is with check, depending on white's response.

Question: How much calculation would a strong player (say an FM+) perform before playing 1...Bg4+?

It's a dangerous move: black begins with an exposed king (with mate threats and a possible rook skewer) and queen attacked, and black responds by creating an undefended bishop. If the checks ended, black would probably lose.

Lichess puzzle 87510: How much calculation would a strong player do before playing Bg4+ when white has a range of (all losing) responses?

Lichess puzzle 87510 has this position.

[FEN "r1b1k3/pp4R1/2q3RQ/4p3/5P2/bP2P3/2P1K2P/8 b - - 0 1"]

The solution is 1...Bg4+,.after which White has 6 legal moves:

1...Bg4+ 2. Rxg4 Qxh6, which is the computer solution, possibly followed by 3. Rg8+ Bf8,
1. Kd3, which is mate in 7,
1. Kd2, which is mate in 8,
1. Ke1, which is mate in 5,
1. Kf1, which is mate in 4, and
1. Kf2, which is mate in 4.

I feel like a human player in a tournament would not calculate the whole decision tree, and probably just intuit that 1...Bg4+ is going to win since black can continue with a range of powerful moves Qf3, Qc2, Rd8, and Bb4 and at least one of them is with check, depending onWhite's response.

Question: How much calculation would a strong player (say an FM+) perform before playing 1...Bg4+?

It's a dangerous movem Black begins with an exposed king, with mate threats and a possible rook skewer, and queen attacked, and Black responds by creating an undefended bishop. If the checks ended, Back would probably lose.