R—Q 8K moves Q × P, ch.K × Q B mates.
if
B moves Q—K 7any Q mates.
No. XLVI
B—B 6K × R Q—Q 7, ch.K × Q R mates.
if
B × R R—B 6, ch.K × P Q mates.
There are other variations.
R—Q 8K moves Q × P, ch.K × Q B mates.
if
B moves Q—K 7any Q mates.
B—B 6K × R Q—Q 7, ch.K × Q R mates.
if
B × R R—B 6, ch.K × P Q mates.
There are other variations.