user12377: I've recently been trying to learn the queen vs rook and rook and bishop vs rook endgames, and I've found it interesting how close the margin of victory vs draw is. I was thinking about whether the bishop's color lock is the reason it can't win. So what if we gave the bishop its shogi promotion that allows it to additionally move like a king? Does this promoted bishop give its rook the support it needs to overcome the enemy rook?
Also, as a related question, is there a more general resource for analyzing endgames with nonstandard pieces?

user18809: It's hard to provide full analysis, but I'd say yes with almost all certainty. One of the main difficulties the stronger side encounters on this endgame is getting to use the bishops to block checks on the right squares. This leveled-up bishop can block checks on any square while the king and rook corner the enemy king

12377: <p>I've recently been trying to learn the queen vs rook and rook and bishop vs rook endgames, and I've found it interesting how close the margin of victory vs draw is. I was thinking about whether the bishop's color lock is the reason it can't win. So what if we gave the bishop its shogi promotion that allows it to additionally move like a king? Does this promoted bishop give its rook the support it needs to overcome the enemy rook?</p>
<p>Also, as a related question, is there a more general resource for analyzing endgames with nonstandard pieces?</p>
 18809: <p>It's hard to provide full analysis, but I'd say yes with almost all certainty. One of the main difficulties the stronger side encounters on this endgame is getting to use the bishops to block checks on the right squares. This leveled-up bishop can block checks on any square while the king and rook corner the enemy king</p>
