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Gunpowder IV

The Demon of the Sixth Heaven

Oda Nobunaga · 1534–1582

The 'fool of Owari' who turned gunpowder into an art, nearly unified Japan — and burned at one move from victory.

I · The Blow in the Storm

Okehazama · 19 June 1560

Japan has spent a century tearing itself apart in the Sengoku era: the Warring States. Imagawa Yoshimoto marches on Kyoto with twenty-five thousand men and means, in passing, to crush a young provincial lord they call 'the fool of Owari': Oda Nobunaga, who can barely raise two thousand.

His counsellors beg him to shut himself in the castle. Instead, Nobunaga dances his favourite chant —'the fifty years of a man are but a dream'—, puts on his armour and rides out with what he has. A sudden hailstorm blinds the enemy camp, where Imagawa is already celebrating his victory.

When the sky clears, Oda's men are inside the camp. Imagawa believes it is a brawl among his own soldiers… until it is not. Play the blow of Okehazama: a single move, at the only point that matters.

One blow, exact and under the storm: the general fell in his own camp and twenty-five thousand men no longer had a war. Okehazama enters Japanese legend as the impossible victory.

Nobody laughs at 'the fool of Owari' any more. And among the officers who change sides after the battle is one Tokugawa Ieyasu: remember that name, for he will close this story.

II · Tenka Fubu

Inabayama · 1567

Seven years it takes Nobunaga to conquer Mino province and its 'impregnable' fortress of Inabayama, taken at last when a handful of men scale the mountain by the face nobody watches. He renames it Gifu, after the mountain from which the ancient Chinese kings unified their empire.

And he unveils a seal that is a declaration of war on the whole country: 'Tenka Fubu' — the realm under one sword. Where every lord fights to survive, Nobunaga announces he will play for the entire board.

His first lesson as a unifier: the enemy piece that guards the file is not avoided, it is captured. Take the rook, and the back rank is yours.

The rook fell and the whole file with it: defending is not enough when your opponent plays to take everything. Gifu is now the headquarters of Tenka Fubu.

Two years later, Nobunaga enters Kyoto as the shogun's protector. The great board of Japan now has a player with a plan… and many lords beginning to ally against him.

III · The Ford of Anegawa

Anegawa River · 1570

The coalition of the Azai and Asakura clans closes its ring around Nobunaga, who has just escaped a trap at Kanegasaki by a miracle: his own sister-in-law warned him, they say, with a sack of beans tied at both ends.

At the ford of the Anegawa, the two armies collide in the water, a chaotic melee where the lines dissolve. At his side fights Ieyasu, his steadiest ally, who breaks the Asakura flank while Oda holds the centre.

In the chaos of a ford, the winner is the one who rules the long diagonal: the queen sees everything from a1, and when the enemy king steps on the wet square, the blow lands with the knight covering the retreat.

The queen ruled the whole river from the corner and the blow fell on the exact ford: Anegawa breaks the coalition's first ring.

But the war to come will not be against feudal lords, but against something older and tougher: the warrior monks and the leagues of believers who obey no daimyo.

IV · The Mountain that Burned

Mount Hiei · 1571

On Mount Hiei, overlooking Kyoto, the monastery of Enryaku-ji has been an armed power for centuries: thousands of warrior monks who crown kings, burn rival capitals, and now give shelter and soldiers to Nobunaga's enemies.

Nobunaga offers them neutrality. They refuse. And then he does what no Japanese lord had dared to imagine: he storms the sacred mountain and razes it utterly. The chronicle of that day is among the darkest of the century, and his own men thereafter call him 'the Demon King of the Sixth Heaven' —a title he adopts with a smile—.

History is not judged alone: it is told. On the board, the lesson is total decision: the knight seals every exit from the corner and the queen executes without a second chance. Eight hundred years of power fell in one morning.

The knight closed the corner and the queen allowed no second move: the military power of the sacred mountain ended in a single autumn morning.

All Japan takes the message: against Nobunaga there is no sanctuary. The pious lords call him a demon; he has the bells melted into cannon and plays on.

V · The Leagues of Believers

Nagashima · 1574

Harder than any samurai army are the ikkō-ikki leagues: federations of peasants, monks and merchants under arms who do not fear death and acknowledge no lord. From their strongholds in the marshy deltas of Nagashima they have wrecked two of Oda's campaigns and killed one of his brothers.

The third campaign is different: Nobunaga comes with a fleet, closes the rivers one by one and cuts each island fortress off from the rest. Without mutual relief, the impregnable delta becomes a series of small sieges.

The end of Nagashima is brutal even for its century, and the chronicles do not hide it. On the board remains the cold lesson: the queen pins the rank, the bishop crosses the water along the diagonal, and the fortresses that were unbeatable together fall apart.

The queen pinned the rank and the bishop came over the water: the fortresses that were invincible together fell one by one, alone.

There remains the most fearsome of the old enemies: Takeda, whose cavalry is reckoned the best in Japan. Nobunaga's answer to that cavalry is about to change war forever.

VI · Three Thousand Muskets

Nagashino · 28 June 1575

The Takeda cavalry is Japan's nightmare: at Mikatagahara it crushed Ieyasu himself, who escaped by minutes. Now it charges the Oda-Tokugawa army on the plain of Nagashino… exactly as Nobunaga wanted.

For behind the palisades wait three thousand arquebusiers organised —so the tradition tells— in lines that fire by turns: while one discharges, another reloads, and the third takes aim. For the first time in history, the fire never stops.

Charge after charge, the finest cavalry in the country breaks against the wall of smoke. Play that rotation: first check, second check, and the bishop —the third line— finishes when the horseman has nowhere left to wheel. Gunpowder has just won its throne.

Volley, volley, and the final diagonal: the most feared charge in Japan died against a fire that never stopped speaking. Nagashino is the birth certificate of modern war in Asia.

The war manuals of the whole world will end up citing this afternoon. And Nobunaga, master now of central Japan, builds himself a throne to match his ambition: a castle such as has never been seen.

VII · The Iron Ships

Kizugawa Bay · 1578

The Mori clan rules the Inland Sea and supplies by water the last great enemy bastion: the fortress-monastery of Ishiyama Honganji. In the first battle of Kizugawa, its fire-ships burn Oda's entire fleet.

Nobunaga's reply is pure Nobunaga: he orders his admiral to build six giant ships plated with iron, bristling with cannon —the tekkōsen, perhaps the first ironclads in the world—. The fire arrows bounce off; the cannon answer.

In the second battle, the Mori fleet shatters against the metal giants and the sea is closed. Play the armour: the queen rams where she was once burned, the iron knight seals the harbour mouth, and the enemy's supply line dies on d2.

Where the wood burned, the iron rammed: the queen took the channel and the knight sealed the harbour. Ishiyama Honganji, without its sea, begins counting its last rice.

After ten years of war, the great fortress-monastery will surrender at last in 1580. Central Japan obeys a single sword… and the seal Tenka Fubu no longer reads as arrogance, but as a calendar.

VIII · The Golden Castle

Azuchi Castle · 1576–1579

On the shores of Lake Biwa, Nobunaga raises the castle of Azuchi: seven storeys, the topmost gilded inside and out, visible for leagues. It is not merely a fortress: it is a declaration that the age of hiding behind walls is over.

At its feet, the other revolution: free markets —rakuichi rakuza—, without closed guilds or tolls, safe roads, and trade open even to the Portuguese missionaries, who bring him a map of the world and are astonished that the Japanese lord grasps it at first sight.

Strength is also built in peacetime: the bishop takes the great diagonal like the roads of trade, the queen orders the flank, and the whole realm is held with three exact moves.

Diagonal, flank, centre: the order of Azuchi needed not one stroke of fury. Some castles are built of stone, and others of open roads.

Of the great rivals of old, only one still stands: the Takeda clan, the shadow of Nagashino. Nobunaga prepares the final campaign against the mountain.

IX · The Fall of the Takeda

Tenmokuzan · March 1582

The great Takeda Shingen is dead; his son Katsuyori inherited the cavalry and the pride, but not the fortune: Nagashino took the flower of his captains, and the vassals can smell the end.

The campaign of 1582 hardly looks like a war: the Takeda fortresses surrender or empty themselves as the Oda and Ieyasu columns advance. Katsuyori falls back from castle to castle to the mountain of Tenmokuzan, where the story of his clan goes out.

It is the methodical hunt of an era's ending: the queen pins the file, the rook relieves her, and the king of the old war is led rank by rank to the last square of his mountain.

Pin, relief, push: the clan that ruled war on horseback ended without a board on its own mountain. The Sengoku era is running out of actors.

Japan is, for the first time in more than a century, one step from unification. Nobunaga dismisses armies, plans the invasion of the west… and accepts an invitation to rest a few days at a temple in Kyoto called Honnō-ji.

X · The Enemy Is at Honnō-ji

Honnō-ji, Kyoto · 21 June 1582

Nobunaga rests at the Honnō-ji temple with only his personal guard: all his armies are far away, scattered on campaign. His general Akechi Mitsuhide, marching west with thirteen thousand men, suddenly wheels his columns towards Kyoto and speaks the sentence Japan will never forget: 'The enemy is at Honnō-ji.'

At dawn the temple is surrounded and burning. Nobunaga fights in the corridor with his spear, understands there is no way out, and withdraws to the inner rooms to die by his own hand as the fire covers everything. He was forty-seven; he was one step from unifying Japan. His body was never found.

Why did Mitsuhide do it? Grievance, fear, ambition: four centuries of debate have not closed the question. Play the last hunt of the chronicle: queen and rook, check by check, to the first rank — where the fifty years of a man come due, as the chant said: a dream within a dream.

Check by check, the king was led to the first rank and the dream closed: Nobunaga's game ended one move from winning the whole board.

Mitsuhide reigned eleven days: Hideyoshi, Nobunaga's peasant-born general, returned by forced marches and crushed him. Hideyoshi completed the unification; at his death, Ieyasu —the patient ally of Okehazama— inherited it and founded two and a half centuries of peace. Japan sums it up in a verse: Nobunaga pounded the rice, Hideyoshi baked the cake… and Ieyasu ate it. Here ends the Chronicle of the Demon of the Sixth Heaven.

A dream within a dream

“The fifty years of a man are but a dream within a dream under the sky.”

— From the chant Atsumori, which Nobunaga loved to dance

You have marched the whole road of the Demon: from the storm of Okehazama to the flames of Honnō-ji. Nobunaga broke the great clans, armed the foot-soldier with thunder at Nagashino, opened the markets and built the golden castle — and fell to his own general one step from unifying Japan. Hideyoshi finished the work; Ieyasu inherited it and gave Japan two and a half centuries of peace. Japan sums it up in a verse: Nobunaga pounded the rice, Hideyoshi baked the cake… and Ieyasu ate it. Here ends the Chronicle of the Demon of the Sixth Heaven.

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A narrative chess chronicle from History's Gambit, where every puzzle is a checkmate certified by a custom solver. Based on historical facts and public-domain sources. historysgambit@gmail.com