 |
451. John James O’Keefe Die Schwalbe 1933 |
| Mate in 3 |
See the solution.
 |
452. Barry J. da Costa Andrade Chess World 1949 |
|
Mate in 2 Twin (b) After key of (a) |
See the solution.
 |
453. Herbert Ahues The Sun-Herald 1961 3rd Prize |
| Mate in 2 |
See the solution.
 |
454. Laimons Mangalis Die Schwalbe 1953 |
| Mate in 6 |
See the solution.
 |
455. Alexander Goldstein British Chess Federation Tourney 1955 4th Prize |
| Selfmate in 2 |
See the solution.
 |
456. Frederick Hawes The Australasian Chess Review 1944 1st Prize |
| Mate in 2 |
See the solution.
 |
457. Linden Lyons The Problemist 2015 |
|
Mate in 2 Grasshoppers a5, g8 |
See the solution.
 |
458. Andy Sag OzProblems.com 2019 |
| Mate in 2 |
See the solution.
 |
459. Rod Sutherland The Problemist 1981 |
| Mate in 3 |
See the solution.
 |
460. Edwin John Eddy The Australasian Chess Review 1933 4th Prize |
| Mate in 2 |
See the solution.
 |
461. Norman Macleod Chess World 1950 |
| Mate in 3 |
See the solution.
 |
462. Robert Lincoln Australian Chess Problem Magazine 1996 |
| Mate in 2 |
See the solution.
 |
463. Christopher Jones Australian Chess 2005 |
|
Helpmate in 3 Twin (b) Pd5 to b5 |
See the solution.
 |
464. John James O’Keefe & William James Smith L'Eco degli Scacchi 1917 2nd Hon. Mention |
| Mate in 2 |
See the solution.