MESON Chess Problem Database
Problem Display
PID: 161519 (3K4/5P2/R2N4/2k5/2PR4/2P1N3/5r2/6Bb w - - 0 1)
Ahues, Herbert Siegfried Oskar
Chess in Australia, 1980
#2
9 + 3
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rg2
- 2.Se4#
- 2.Sb7#
- 2.Rd5#
- 1...Rf3
- 2.Se4#
- 2.Sb7#
- 2.Rd5#
- 1...Be4
- 2.Sxe4#
- 1...Bd5
- 2.Rxd5#
- 1...Bb7
- 2.Sxb7#
- 1...Rg2
- Tries
- 1.Sg2?
- threat
- 2.Se4#
- 2.Sb7#
- 2.Rd5#
- 1...Rxf7
- 2.Se4#
- 2.Rf4#
- 2.Rd5#
- 1...Rb2
- 2.Se4#
- 2.Rd2#
- 2.Rd5#
- 1...Re2
- 2.Sb7#
- 2.Rd5#
- 1...Rf4
- 2.Sb7#
- 2.Rxf4#
- 2.Rd5#
- 1...Bxg2!
- threat
- 1.Sdf5?
- threat
- 2.f8Q#
- 2.f8B#
- 1...Bg2
- 2.f8Q#
- 2.f8B#
- 1...Rf1
- 2.f8Q#
- 2.f8B#
- 1...Ra2
- 2.f8Q#
- 2.f8B#
- 1...Rb2
- 2.f8Q#
- 2.f8B#
- 1...Rc2
- 2.f8Q#
- 2.f8B#
- 1...Rd2
- 2.f8Q#
- 2.f8B#
- 1...Re2
- 2.f8Q#
- 2.f8B#
- 1...Rg2
- 2.Rd5#
- 2.f8Q#
- 2.f8B#
- 1...Rh2
- 2.f8Q#
- 2.f8B#
- 1...Rf3
- 2.Rd5#
- 2.f8Q#
- 2.f8B#
- 1...Rf4
- 2.f8Q#
- 2.f8B#
- 1...Bf3
- 2.f8Q#
- 2.f8B#
- 1...Be4
- 2.f8Q#
- 2.f8B#
- 1...Bd5
- 2.Rxd5#
- 2.f8Q#
- 2.f8B#
- 1...Bc6
- 2.f8Q#
- 2.f8B#
- 1...Bb7
- 2.f8Q#
- 2.f8B#
- 1...Ba8
- 2.f8Q#
- 2.f8B#
- 1...Rxf5!
- threat
- 1.Re4?
- threat
- 2.Sb7#
- 1...Rxf7
- 2.Sef5#
- 1...Bxe4
- 2.Sxe4#
- 1...Rb2
- 2.Sc2#
- 1...Rd2!
- threat
- 1.f8Q?
- threat
- 2.Se4#
- 2.Sdf5#
- 2.Sb7#
- 2.Sf7#
- 1...Rf5
- 2.Se4#
- 2.Sdxf5#
- 2.Sb7#
- 2.Sf7#
- 1...Rf6
- 2.Se4#
- 2.Sb7#
- 1...Rf7
- 2.Se4#
- 2.Sb7#
- 2.Sxf7#
- 1...Be4
- 2.Sxe4#
- 2.Sdf5#
- 2.Sb7#
- 2.Sf7#
- 1...Bb7
- 2.Se4#
- 2.Sdf5#
- 2.Sxb7#
- 2.Sf7#
- 1...Rxf8+!
- threat
- 1.f8S?
- threat
- 2.Se6#
- 2.Sd7#
- 1...Rf6
- 2.Sd7#
- 1...Rf7
- 2.Se6#
- 1...Bd5
- 2.Sd7#
- 2.Rxd5#
- 1...Bc6
- 2.Se6#
- 1...Rxf8+!
- threat
- 1.f8B?
- threat
- 2.Se4#
- 2.Sdf5#
- 2.Sb7#
- 2.Sf7#
- 1...Rf5
- 2.Se4#
- 2.Sdxf5#
- 2.Sb7#
- 2.Sf7#
- 1...Rf6
- 2.Se4#
- 2.Sb7#
- 1...Rf7
- 2.Se4#
- 2.Sb7#
- 2.Sxf7#
- 1...Be4
- 2.Sxe4#
- 2.Sdf5#
- 2.Sb7#
- 2.Sf7#
- 1...Bb7
- 2.Se4#
- 2.Sdf5#
- 2.Sxb7#
- 2.Sf7#
- 1...Rxf8+!
- threat
- 1.Sg2?
- Keys
- 1.Sd5!
- threat
- 2.Sb7#
- 1...Rxf7
- 2.Rf4#
- 1...Bxd5
- 2.Rxd5#
- 1...Rb2
- 2.Rd2#
- threat
- 1.Sd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- B(a);N_GUARD::S(G),XB(a)
- B(a);N_GUARD::R1(E),XB(a)
- Tries
- Try
- S(C);
- Threat
- DUALS(3)
- Refutation
- B(a);XS(C)
- Try
- S(G);
- Threat
- P=Q
- Vars
- B(a);::P=Q
- R(b);::P=Q
- R(b);P_PINR(E)::P=Q
- Refutation
- R(b);XS(G)
- Try
- R(E);
- Threat
- S(G)
- Vars
- R(b);XP(H)::B(A)+S(C)
- B(a);XR(E)::S(G),XB(a)
- R(b);::B(A)+S(C)
- Refutation
- R(b);P_PINS(G)
- Try
- P(H);
- Threat
- DUALS(4)
- Refutation
- R(b);CHECK,XQ(H)
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- R(b);::S(H)
- B(a);::S(H)
- Refutation
- R(b);CHECK,XS(H)
- Try
- P(H);
- Threat
- DUALS(4)
- Refutation
- R(b);CHECK,XB(H)
- Try
- Actual
- S(C);
- Threat
- S(G)
- Vars
- R(b);OGATEB,XP(H)::B(A)+R(E)
- B(a);OGATE,XS(C)::R1(E),XB(a)
- R(b);OGATEB::B(A)+R(E)
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).