Interestingly enough, the Magni's last piece on the board is indeed his white bishop!
Showdown!

If you watch over the game you'll realize that the only reason The Magni lost is because he didn't know who his opponent was! Even from his first move, it's obvious that he had decided that being up a full piece he'll simply bully his opponent into submission; and he begins throwing his weight around. However, you don't play bully-mode against Stockfish, unless mayhaps you're up a full queen. Eventually SF ignores the aggressive play, begins sacrificing pieces, and before you know it the Magni loses his queen. Had he learned his lesson then, he may have still managed a draw. But thinking he had played some stunning brilliancy, he continues with his overambitiousness, and SF makes him pay. When the Magni finally realizes his attacks aren't working and starts a more strategic approach, it's already far too late!

How can a bot be called 'impossible' when it loses up a full bishop?! This time around it's the black one. A truly brilliant battle, with a grueling clash of queens. Midst the encounter, in which Stockfish handedly outduels the Magni, the missing dark-squared bishop is casually picked up. At the end of a long day's skirmish, his queen at last conquers her nemesis, and mate is short in coming.

Stockfish beats the Magni in 47 moves, while starting down a clean knight! Magni holds out a while, but SF keeps dodging and probing until the Magni is completely buffudled and crumbles to pieces.

STOCKFISH ERASES THE MAGNI!!!
He begins without his g- knight, and starts the game by sacking a pawn! All three Magnis are laughing, as they view the board. One high-fives the other and the third does a celebration. But then Stockfish sits them down and takes them to school, smoothly delivering mate on move 55!!
The hapless 3-headed monster has his meticulously formed position bulldozed straight through; SF's one knight doing the dance of his life, while the Magni's stand by and watch.

Stockfish had of long heard rumors that Rooks are overrated, but he never paid much attention to them. After having his rook trapped by Leela though in their infamous match, he decided he must get to the bottom of it. After some careful deliberation, he came to the conclusion that what better way could there be to test the theory than on that weak Norwegian guy with all the hype! He quickly dialed Mr. Carlsen and challenged him to a game, down a rook. To make it even more tempting, he told him he can choose which of SF's 2 Rooks to remove. The Magni was ecstatic, since he had never beaten SF and thought this may just be his chance. He chose the h-rook of course, and gleefully sat down at the board.
Stockfish quickly wiped the smile from his face though, dominating him even from the very start. He purposely sacked his one rook and kept both the Magni's alive till the very end, just to make sure that Rooks are truly worthless.
The Magni was pretty much demolished!! SF however, is still not completely convinced, since as he put it: 'I'd probably beat that fellow even down 9 queens!'

What I find most fascinating of ST's games is the way he utilizes his knights. Knights are the most difficult piece to master, but a SF knight is as lethal as a super-GM's rook. Watching them is a thing of beauty, as they're always in the thick of things, and dominating both on defence and offense. In this last game I just posted, his knights make 10-moves-a-piece and both are on all four corners of the board at some point! No other piece, including his queen, make it into all 4. Obviously though it's about what they're accomplishing.

Long story short, the Magni was completely dejected over his latest loss to SF. After studying the game the entire night, he called our champion asking for a rematch; SF's A-rook missing. This time around it was an elated Fish putting down the phone. 'So the bubble-headed chump wishes to be befuddled once again,' he mused.
As he prepared for the match, he decided his goals were to deliver mate in no less than he did last game; 85 moves. Unbeknownst to the Magni, he planned on doing it with both the Norwegian's Rooks on board, just to show that Rooks are truly just blundering fools who do naught but get in the way.
The game was soon underway. But to SF's great dismay, there was this one white bishop getting real pesky. Down a full rook, you obviously want to keep as many pieces on board as you can, but he soon realized he has no choice but to sack his knight for it. It was a gambit well worth it though, since now his white bishop, (or 'sword' as he calls them,) was free to wreak havoc as it pleased.
And havoc the SF wreaked! Abandoning his armored stallions, he leaped to the ground charging headlong into battle, twin katanas whirling, one in each hand. The Mozart Masters soon found themselves pinned underneath the towering walls of their own castle with no escape. With one last blurring arc of his black rapier, SF then put the adversary out of misery.
P.S. You can play over all the moves against the Magni yourself, on the app.

With 'The Magni' newly retired, Stockfish was soon driven nearly mad by boredom, playing himself sick in his sealed bedroom. But then at last it suddenly dawned on him: 'What about that Debilitated Draconic Komedian from Chess.com?! I'll make him an offer he cannot resist:' SF must move all 8 pawns and his king, in his first 9 moves!
Even with all the humiliating defeats ringing clear in him memory, the hapless dragon was easily ensnared in the net.
The pop-eyed reptile reveled in the arrangement, while the Fishy fellow delved deep in his preparations. To add some extra flavor to his fresh catch, he decided there'd be no pawn captured till move 48!
The following morning at sunrie, the feast took place. The Farsighted Fish didn’t even bother cutting up his feed. So scrumptious was the delectable breakfast, he swallowed the slithery serpentine whole in just 56 seconds!
After the game, Komodo said that the problem playing SF is that even if you manage to slay his savage steeds, the cold-blooded bishops will then obliterate you.

They say Stockfish loves dance. Recently he's been teaching his horses to hoof the jig. At the end of one lengthy session he suddenly concluded: 'But of course, let's try our new opening with Chess.com's max engine.' So saying, he burst into such a laughter, he could not contain himself for over 29 minutes.
Eventually he calmed down. He immediately phoned the dragon, and beguiled him into accepting. 'Our last match lasted 56 seconds,' he told him. 'Can't a chap spare a minute for an old chum?!'
The sweepstakes soon began. 8 moves in, our mean fish assessed the board, a wicked smile spread across its face. He was perfectly satisfied with his position and had his opponent exactly where he wanted him. 'According to my advanced analytics it's now mate in 48, Mr Dragon,' he announced. 'You may as well resign!'
Wielding his favorite black blade, he soon beheaded the beasts' mate before slaughtering the monster itself.

This time around SF took on Komodo with all his pieces at starting position 12 moves in. After the game, the dragon was left rethinking everything it's ever learned about chess.

Stockfish challenges Komodo Dragon to a game in which he may not move any of his pieces twice before he's moved all 16 of them!

Stockfish recently heard about the Bongcloud opening and how feeble GM's such as Hikaru and the like use it to taunt those even weaker than them. So he decided he'll try out a 'simple' Triple-Bongcloud against Chess.com's max engine just to set the record straight.
As if that isn't enough, he then continued breaking all the rules of the book by placing his knights on the a3 and h3 squares all within the first 10 moves. One thing for sure, he isn't kidding around any longer.

Ever since Sir Stockfish had begun studying chess, he had always been fascinated by the fact that pawns can jump two squares on their first move. One cold winter morning he suddenly sprang from his bed declaring: 'Today all 8 of my petty pages shall take the plunge!'
His first victim was none other than the chess.com max engine. Komodo went for the Caro-Kann, upon which SF began chortling nastily. 'Though it obviously makes no difference to me what you play, I still find it comically amusing you so foolishly opt for the Hikaro-Kann,' he snorted. Komodo made no answer, his eyes fixed to the board.
'That’s a grave mistake, young lad,' SF growled, when his opponent snatched a free pawn on move 3. 'You've now aroused my irrepressible wrath, rabblerouser!'
Komodo still made no answer, his complete attention on the position. 'Mate in 58!' thundered the fish, slamming its horse down on c3. 'Your doom awaits you, caged on h8!
None other of the dragon's pawns made it past half-board that game!

'Sleeping Stockfish' is quite the fan of throwing forth his pawns in the opening. Here he plays the Whale variation against Chess.com's max engine.
Watch his king. Is this even chess?!
Stockfish takes on The Magni without a bishop!