The Blackhole Tesuji is a complex, dangerous, and highly theoretical strategy that could unleash a new meaning of pain on your opponent. If used properly, the Blackhole Tesuji can drastically shift the balance of a game towards your favor.
Practically since the beginning of go, it has been commonly agreed amongst strong players that heavy groups are suboptimal, as they are large, bulky, and do not make many points for you at all. However, because they are large, you cannot afford to lose them, so you must invest many moves to save them from opponent’s attacks, allowing him to reap benefits elsewhere. Recent research has alluded to the fact that perhaps these heavy groups are not as worthless as we once thought. Perhaps heavy groups, like the empty triangle, power cube, and hyper cube, are just misunderstood, and in the right situation, can alter the progress of the game.
This research began with an in-depth look at the early history of go. Many theories about the creation of go state that the Chinese modeled the game after the properties of the night sky. This would make sense, the goban represents the heavens, and as the sun sets and the game progresses, players add stars to the sky and create beautifully complex constellations. 4000 years has passed since that time, and humanity has learned a lot about the inner workings of time and space.
According to Einstein’s General Theory of Relativity, Gravity is caused by the curvature of space. Imagine that the universe is a giant suspended bed sheet. When heavenly bodies like stars and planets are put on that bed sheet, its mass pulls the bed sheet downwards, effectively causing the bed sheet to curve around the object. If you put a bowling ball in the center of the bed sheet, and put some tennis balls around it, the tennis balls will roll towards the bowling ball because it creates this depression in the bed sheet.
This is how gravity and our galaxy works, our planets orbit the sun fast enough to prevent them from falling to a fiery death. However, over time a star grows bigger and bigger, and if it grows big enough (about ten times the size of our sun), the core will collapse upon itself and become a tiny super dense dot that has all of the mass as the original sun. All of this concentrated mass will have a profound effect on all neighboring heavenly bodies, as they will be immediately drawn towards this dot and be crushed by the gravitational forces. It would be like dropping a truck onto your bed sheet, everything would be drawn towards the center of the sheet. Even light cannot escape the power of a black hole.
The theory of the Blackhole Tesuji states that if your “star”, or huge heavy clump of stones, obtains enough mass, it will collapse upon itself, destroying your opponents stones. The move has never been attempted, but the following is a theoretical situation where one could use this Tesuji:
- Diagram 1: 96 moves into this game, white is fairly confident about his chances of winning this game. He has 4th line territory in all four sides, all four corners, giving him about 192 points. He is also under the illusion that black in the center is dead, as it has only one eye. He really wonders why black has not resigned. Black on the other hand, who is well versed in astrophysics, has spent all of his moves building up a super dense core in the center of the board. Black 1 is the straw that broke the camels back, creating a core in the center of the board of critical mass.
- Diagram 2: As the reader can probably guess, black's power core in the center of the board has collapsed to a single point. The weight and power of the 49 stones that made up the 7x7 core has been condensed down into one very dense point, which causes the goban to curve around it so much that it almost shatters from the strain.
- Diagram 3: The Density of the tengen stone is too great, and white's position is shattered as his stones spiral down into the center where they are crushed into glass dust by the intense gravity.
- Diagram 4: The end position is drastically different from the previous one. Black has accomplished two achievements. First, he has essentially reset the entire game, it's as if it is black's first move and he has played on the tengen. Secondly, he has crushed 48 of white's stones, giving him a 42.5 point lead over white, which will be difficult for white to overcome. At this point, white would probably resign.
- Diagram 5: Unfortunately, the Blackhole Tesuji sometimes makes it difficult to have a subsequent rematch.
Hylebos: If anyone wants to expound upon this Tesuji, fix any gramatical or scientifical errors that I may have made in the article, or make a better spiral out of white stones in Diagram 3 than I did, go for it.
Willemien how about this spiral
MrTenuki: This is only true under the assumption that the komi is 5.5 (isn't it 6.5 now under Japanese rules?) Also, when Black's 49 stones condense into one, do we count the 48 black stones as captured? xela: No, the single black stone is a "neutron stone", worth 49 points under area scoring.
Tas: Scientifically this is very inacurate. The gravity at a specific point outside of the heavy object does not change when it colapses to a black hole. The only reason a black hole has an enormous gravity is because it is possible to get much closer to it. Planets can keep orbiting a black hole noting no change exept that it has become darker than it was last millenium.
Hylebos: I think for the purpous of keeping the humour of this article I am going to reject your reality and substitute my own. Though in hindsight that does make a lot of sense...
hhw: Another scientific point, since everything is symmetric up to diagram 3, it does not make sense for White stones to be spiraling into the "blackhole" in diagram 3. Also, I think you might be skipping too much astronomy by going straight into blackhole tesuji theory. I believe you should first develop the powerful supernova tesuji. In which the collapse of a compact Black stone core explodes and blows away all the White stones. :)
atomicholt: That diagram 5 board looks like it'd be really fun to play on. Maybe