MESON Chess Problem Database
Problem Display
PID: 94660 (4r2k/7N/2N2R1K/3Q4/8/8/8/8 w - - 0 1)
Pypa, Volodimir Iosifovich
Magadanskaya Pravda, 1990
#2
5 + 2
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Rf8#
- 1...Re2
- 2.Rf8#
- 1...Re3
- 2.Rf8#
- 1...Re4
- 2.Rf8#
- 1...Re5
- 2.Rf8#
- 1...Re7
- 2.Rf8#
- 1...Rd8
- 2.Qxd8#
- 1...Rf8
- 2.Rxf8#
- 1...Re1
- Tries
- 1.Se5?
- threat
- 2.Sg6#
- 1...Rxe5
- 2.Rf8#
- 1...Rg8
- 2.Sf7#
- 1...Re6!
- threat
- 1.Sd8?
- 1...Rxd8
- 2.Qxd8#
- 1...Re1
- 2.Rf8#
- 1...Re2
- 2.Rf8#
- 1...Re3
- 2.Rf8#
- 1...Re4
- 2.Rf8#
- 1...Re5
- 2.Rf8#
- 1...Re7
- 2.Rf8#
- 1...Rf8
- 2.Rxf8#
- 1...Rg8
- 2.Sf7#
- 1...Re6!
- 1...Rxd8
- 1.Sf8?
- threat
- 2.Sg6#
- 1...Rxf8
- 2.Rxf8#
- 1...Re6!
- threat
- 1.Qg2?
- threat
- 2.Qg7#
- 1...Re7
- 2.Rf8#
- 1...Rg8!
- threat
- 1.Qf7?
- threat
- 2.Qxe8#
- 2.Qg7#
- 1...Rb8
- 2.Qg7#
- 1...Re1
- 2.Qg7#
- 2.Qf8#
- 1...Re2
- 2.Qg7#
- 2.Qf8#
- 1...Re3
- 2.Qg7#
- 2.Qf8#
- 1...Re4
- 2.Qg7#
- 2.Qf8#
- 1...Re5
- 2.Qg7#
- 2.Qf8#
- 1...Re6
- 2.Qg7#
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Ra8
- 2.Qg7#
- 1...Rc8
- 2.Qg7#
- 1...Rd8
- 2.Qg7#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 1...Rg8!
- threat
- 1.Qe5?
- threat
- 2.Rf8#
- 2.Qxe8#
- 1...Kg8
- 2.Qxe8#
- 1...Rxe5
- 2.Rf8#
- 1...Rb8
- 2.Rg6#
- 2.Rf8#
- 2.Qxb8#
- 1...Re7
- 2.Rf8#
- 1...Ra8
- 2.Rg6#
- 2.Rf8#
- 1...Rc8
- 2.Rg6#
- 2.Rf8#
- 1...Rd8
- 2.Rg6#
- 2.Rf8#
- 1...Rf8
- 2.Rxf8#
- 1...Rg8
- 2.Rf8#
- 1...Re6!
- threat
- 1.Qg5?
- threat
- 2.Qg7#
- 1...Re7
- 2.Rf8#
- 1...Rg8!
- threat
- 1.Qd7?
- threat
- 2.Qxe8#
- 2.Qg7#
- 1...Kg8
- 2.Qxe8#
- 2.Qg7#
- 1...Rb8
- 2.Qg7#
- 1...Re1
- 2.Rf8#
- 2.Qg7#
- 1...Re2
- 2.Rf8#
- 2.Qg7#
- 1...Re3
- 2.Rf8#
- 2.Qg7#
- 1...Re4
- 2.Rf8#
- 2.Qg7#
- 1...Re5
- 2.Rf8#
- 2.Qg7#
- 1...Re6
- 2.Qg7#
- 1...Re7
- 2.Rf8#
- 1...Ra8
- 2.Qg7#
- 1...Rc8
- 2.Qxc8#
- 2.Qg7#
- 1...Rd8
- 2.Qg7#
- 2.Qxd8#
- 1...Rf8
- 2.Rxf8#
- 2.Qg7#
- 1...Rg8!
- threat
- 1.Se5?
- Keys
- 1.Se7!
- threat
- 2.Sg6#
- 1...Rxe7
- 2.Rf8#
- 1...Rg8
- 2.Qxg8#
- threat
- 1.Se7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::R(C)
- R(a);OGATEB::QAR(A),XR(a)
- R(a);N_GUARD::R(C),XR(a)
- Tries
- Try
- S(B);
- Threat
- S(B)
- Vars
- R(a);N_GUARD,XS(B)::R(C)
- R(a);SBLOCK::S(B)
- Refutation
- R(a);P_PINR(C)
- Try
- S(B);
- Vars
- R(a);OGATE,XS(B)::QAR(A),XR(a)
- R(a);N_GUARD::R(C)
- R(a);N_GUARD::R(C),XR(a)
- R(a);SBLOCK::S(B)
- Refutation
- R(a);P_PINR(C)
- Try
- S(E);
- Threat
- S(E)
- Vars
- R(a);OGATE,XS(E)::R(C),XR(a)
- Refutation
- R(a);P_PINR(C)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- R(a);N_GUARD::R(C)
- Refutation
- R(a);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(a);::QAB1(A)
- R(a);N_GUARD::QAR2(A)
- R(a);SBLOCK::QAB1(A)
- Refutation
- R(a);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- K(b);P-FLIGHT::QAR2(A),XR(a)
- R(a);XQ(A)::R(C)
- R(a);::QAB(A)+R(C),DCHECK
- R(a);::QAB(A)+R(C),DCHECK,XR(a)
- R(a);::QAB(A)+R(C)
- Refutation
- R(a);P_PINR(C)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- R(a);N_GUARD::R(C)
- Refutation
- R(a);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(a);::QAB1(A)
- R(a);P_PINR(C)::QAB1(A)
- R(a);N_GUARD::R(C)
- R(a);SBLOCK::QAB1(A)
- Refutation
- R(a);
- Try
- Actual
- S(B);
- Threat
- S(B)
- Vars
- R(a);N_GUARD,XS(B)::R(C)
- R(a);N_GUARD::QAR1(A),XR(a)
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).