MESON Chess Problem Database
Problem Display
PID: 172327 (5r2/4RP1k/8/4Q2K/5N2/8/8/8 w - - 0 1)
Andreev, Aleksandr Grigorevich
Vecherni Krasnodar, 1996
#2
5 + 2
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.f8Q#
- 2.f8R#
- 1...Ra8
- Tries
- 1.Se2?
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.f8Q#
- 2.f8R#
- 1...Rxf7!
- 1...Ra8
- 1.Sg2?
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.f8Q#
- 2.f8R#
- 1...Rxf7!
- 1...Ra8
- 1.Sd3?
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.f8Q#
- 2.f8R#
- 1...Rxf7!
- 1...Ra8
- 1.Sh3?
- threat
- 2.Sg5#
- 1...Rg8
- 2.f8S#
- 1...Rxf7!
- threat
- 1.Sd5?
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.f8Q#
- 2.f8R#
- 1...Rxf7!
- 1...Ra8
- 1.Se6?
- threat
- 2.Sg5#
- 2.Sxf8#
- 2.Qg7#
- 1...Ra8
- 2.Sg5#
- 2.Qg7#
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.Sg5#
- 2.Qg7#
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.Sg5#
- 2.Qg7#
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.Sg5#
- 2.Qg7#
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.Sg5#
- 2.Qg7#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.Sg5#
- 2.Qg7#
- 2.Qe4#
- 2.Qf5#
- 2.f8Q#
- 2.f8R#
- 1...Rxf7!
- threat
- 1.Re8?
- 1...Rxf7
- 2.Rh8#
- 2.Qh8#
- 1...Rg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...Rh8
- 2.Rxh8#
- 2.Qxh8#
- 1...Rxe8!
- 1...Rxf7
- 1.Qa1?
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.f8Q#
- 2.f8R#
- 1...Rxf7!
- 1...Ra8
- 1.Qb2?
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.f8Q#
- 2.f8R#
- 1...Rxf7!
- 1...Ra8
- 1.Qc3?
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.f8Q#
- 2.f8R#
- 1...Rxf7!
- 1...Ra8
- 1.Qd4?
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.f8Q#
- 2.f8R#
- 1...Rxf7!
- 1...Ra8
- 1.Qd6?
- threat
- 2.Qh6#
- 1...Kg7
- 2.Qh6#
- 1...Kh8
- 2.Qh6#
- 1...Rxf7!
- threat
- 1.Qh8+?
- 1...Rxh8
- 2.f8Q#
- 2.f8R#
- 1...Kxh8!
- 1...Rxh8
- 1.Qg5?
- threat
- 2.Qh6#
- 1...Kh8
- 2.Qh6#
- 1...Rxf7!
- threat
- 1.Qe6?
- threat
- 2.Qh6#
- 1...Kg7
- 2.Qh6#
- 1...Kh8
- 2.Qh6#
- 1...Rxf7!
- threat
- 1.Se2?
- Keys
- 1.Sg6!
- threat
- 2.Sxf8#
- 1...Rxf7
- 2.Qh8#
- 1...Ra8
- 2.f8Q#
- 2.f8R#
- 1...Rb8
- 2.f8Q#
- 2.f8R#
- 1...Rc8
- 2.f8Q#
- 2.f8R#
- 1...Rd8
- 2.f8Q#
- 2.f8R#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg8
- 2.f8S#
- 1...Rh8
- 2.Qxh8#
- 2.f8Q#
- 2.f8R#
- threat
- 1.Sg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
- Tries
- Try
- S(A);
- Vars
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- S(A);
- Vars
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- S(A);
- Vars
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- S(A);
- Threat
- S(A)
- Vars
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- S(A);
- Vars
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- S(A);
- Threat
- DUALS(3)
- Vars
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- R(D);
- Vars
- R(b);OGATE::PXR(b)=Q
- Refutation
- R(b);XR(D)
- Try
- Q(B);
- Vars
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- Q(B);
- Vars
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- Q(B);
- Vars
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- Q(B);
- Vars
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- K(a);P-FLIGHT::QAB1(B)
- K(a);P-FLIGHT::QAR2(B)
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- Q(B);CHECK
- Vars
- R(b);OGATE,XQ(B)::P=Q
- Refutation
- K(a);P-FLIGHT,XQ(B)
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- K(a);P-FLIGHT::QAR2(B)
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- K(a);P-FLIGHT::QAB1(B)
- K(a);P-FLIGHT::QAR2(B)
- Refutation
- R(b);P_SPINR(b),XP(E)
- Try
- Actual
- S(A);
- Threat
- S(A),XR(b)
- Vars
- R(b);N_GUARD,P_SPINR(b),XP(E)::QAR1(B)
- R(b);OGATE::P=Q
- R(b);OGATE::PXR(b)=Q
- R(b);OGATE,SBLOCK::P=S
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).