MESON Chess Problem Database
Problem Display
PID: 153686 (4K3/3B1p2/7R/2p1k3/2P1p3/4B3/8/8 w - - 0 1)
Harley, Brian
The Observer, 1946
(First published on Sun May 5 1946)
#2
5 + 4
| 15290 | Harley Scrapbook | 2015 |
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...f5
- 2.Re6#
- 1...f5
- Tries
- 1.Ke7?
- 1...f5
- 2.Re6#
- 1...f6!
- 1...f5
- 1.Kd8?
- 1...f5
- 2.Re6#
- 1...f6!
- 1...f5
- 1.Kf8?
- 1...f5
- 2.Re6#
- 1...f6!
- 1...f5
- 1.Bc8?
- 1...f5
- 2.Re6#
- 1...f6!
- 1...f5
- 1.Ra6?
- 1...f5
- 2.Re6#
- 1...f6!
- 1...f5
- 1.Rb6?
- 1...f5
- 2.Re6#
- 1...f6!
- 1...f5
- 1.Rc6?
- 1...f5
- 2.Re6#
- 1...f6!
- 1...f5
- 1.Ke7?
- Keys
- 1.Rd6!
- 1...Kxd6
- 2.Bf4#
- 1...f5
- 2.Re6#
- 1...f6
- 2.Rd5#
- 1...Kxd6
- 1.Rd6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- P(d);N_GUARD,SBLOCK::R1(C)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- P(d);N_GUARD,SBLOCK::R1(C)
- Refutation
- P(d);
- Try
- K(E);P-FLIGHT
- Vars
- P(d);N_GUARD,SBLOCK::R1(C)
- Refutation
- P(d);
- Try
- K(E);P-FLIGHT
- Vars
- P(d);N_GUARD,SBLOCK::R1(C)
- Refutation
- P(d);
- Try
- B(D);
- Vars
- P(d);N_GUARD,SBLOCK::R1(C)
- Refutation
- P(d);
- Try
- R(C);
- Vars
- P(d);N_GUARD,SBLOCK::R1(C)
- Refutation
- P(d);
- Try
- R(C);
- Vars
- P(d);N_GUARD,SBLOCK::R1(C)
- Refutation
- P(d);
- Try
- R(C);
- Vars
- P(d);N_GUARD,SBLOCK::R1(C)
- Refutation
- P(d);
- Try
- Actual
- R(C);
- Vars
- K(c);S_FLIGHT,XR(C)::B(A)
- P(d);N_GUARD,SBLOCK::R1(C)
- P(d);SBLOCK::R1(C)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).