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MatPlus.Net Forum General The Terrific Triple Threat
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(1) Posted by Rewan Demontay [Tuesday, Jul 23, 2019 08:27]; edited by Rewan Demontay [19-07-23]

The Terrific Triple Threat

I recently read #295, entitled "Triple Play," of Tim Krabbe's chess diary. It was an interesting read.

In the following position in the game "Kopiecki - Bonin, New York, Marshall Chess Club, 25 September 2005' was shown, with Black to move.

(= 7+8 )

In here, Black played an astounding move: 0-0-0! Now both White's rook and bishop are being attacked AND Black's rook is threatening Rd8#. White promptly resigned.

A triple play it is indeed.

I wonder, is possible to have a castling that results in four threats? If it's at all possible, I have idea on how to do it.

Just for fun, I made a small and simply easy problem. using this idea. I made Black the castler ( :-) I literally just made that up for fun. Is that actually a term used in chess at all? I do wonder...), as it was in the game.

BTM, n#4

(= 6+8 )

My idea here was to have a two mate threats from the rook instead of just a mate and a capture threat. While their is. There are a few duals here and there, but that's just a small cost to me to make the idea work. Some pawns are there to prevent way too many duals. I'm not too sure if any of the duals in my problem could possibly be wiped out.

Solution: 1... Bxf2 Locking in the White King Rxb7 Taking out a future mating threats 2... 0-0-0 A triple threat-checkmate in two ways, and the capture of the rook Rb8+ or Rxc7+ Futile resistance 3... Kxb8 or Kxc7 c6 Only legal move 4. Rd1# or Rd8#

Variation. 1... Bxf2 c6 Any rook move other than Rxb7 reults in a mate in one or two 2... Rd8->0-0-0? cxb7+! Threating Rd1# Rd4 Preventing Rd1# 3. Rb1+ Rd1 Only legal move Rbxd1# or Rdxd1#

I'm just practicing some annotating here!

Feel free to share any similar studies.
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(2) Posted by Hauke Reddmann [Tuesday, Jul 23, 2019 12:02]

Wanna try to make it "zweckrein", as the logical school wants?

To elaborate, take one of the threats out of the position.
K->f1: White could linger on with Rh7. (Probably still lost,
but that could be changed.)
B->g7: As before, Rb1 saves the day for the moment.
R->b2: There we have it - OOO still wins a piece.

Just for demo, checked with the Syzygy tables:
(= 3+4 )

1...Rg2 defends against mate and hanging rook, 2.Rxh1+ is the only win
1...Bd5 defends against mate and hanging bishop, 2.Kxb2 is the only win
- apart from playing Rc8+ and prolonging it - unfortunately a Sb6 doesn't
work as Rg2 would be drawn in that position
1...Rh2 defends both hanging pieces, 1.Rd8# is the only win

And the ultimate rendering would be a study with decoying
the white pieces to b7 and h8 first before castling :-)

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(3) Posted by Rewan Demontay [Tuesday, Jul 23, 2019 17:33]

A miniature of the idea-very nice Hauke!

Also, with this post, I'll have made 110 so far! Five more, and I'll be #40 on the most active members list!
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(4) Posted by Geir Sune Tallaksen Østmoe [Wednesday, Jul 24, 2019 14:29]

Four threats must be possible - the rook can threaten to capture on h8 and d1, and also threaten mate on a vacant square.

Hauke, I will be surprised of nobody has done the idea of luring the pieces to b7 and h8 before castling. I will see if I can find an example.
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(5) Posted by Rewan Demontay [Wednesday, Jul 24, 2019 16:34]

I'm honestly not sure if this castling brings three four or five threats-what do you think?

(= 11+9 )

If Black castles, then:

1. Ra8# threat

2. KxRb7 threat

3. RxBc5 threat

4. If the bishop moves, then n#2

5. If the knight moves to protect the bishop, then n#2

Then again, those last two are jauf x-ray, non-immediate threats. Should they really count?

And I'm sure that a much nicer position could be made with ny ideas.
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(6) Posted by Geir Sune Tallaksen Østmoe [Thursday, Jul 25, 2019 12:57]

I stand corrected - after searching in hhdbv, there seems to be no example with a triple threat. Lots of example with a double threat, although in most cases one of the "threats" is a check, which is cheating.
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MatPlus.Net Forum General The Terrific Triple Threat