MESON Chess Problem Database
Problem Display
PID: 86472 (8/6R1/3n2K1/6R1/2N2k2/1b1Q4/1Nq5/7B w - - 0 1)
Rudenko, Valentin Fedorovich
Shakhmaty v SSSR, 1952
#2
7 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Qe3#
- 2.Qg3#
- 1...Qxd3+
- 2.Sxd3#
- 1...Qc1
- 2.Qf3#
- 2.Qg3#
- 2.Qxd6#
- 1...Qxb2
- 2.Qe3#
- 2.Qf3#
- 2.Qg3#
- 1...Qd2
- 2.Qxd2#
- 2.Qf3#
- 2.Qg3#
- 1...Qe2
- 2.Qg3#
- 1...Qf2
- 2.Qxd6#
- 1...Qg2
- 2.Qe3#
- 1...Qh2
- 2.Qe3#
- 2.Qf3#
- 2.Qxd6#
- 1...Qxc4
- 2.Qd2#
- 2.Qf3#
- 2.Qg3#
- 1...Sxc4
- 2.Rf7#
- 1...Se4
- 2.Qe3#
- 2.Qf3#
- 1...Sb5
- 2.Rf7#
- 1...Sf5
- 2.Qf3#
- 1...Sb7
- 2.Rf7#
- 1...Sf7
- 2.Rxf7#
- 1...Sc8
- 2.Rf7#
- 1...Qd1
- Tries
- 1.Kh6?
- threat
- 2.Rg4#
- 2.Qe3#
- 2.Qf3#
- 2.Qg3#
- 2.Qxd6#
- 1...Sf5+
- 2.Rxf5#
- 1...Sf7+
- 2.Rxf7#
- 1...Qxd3
- 2.Sxd3#
- 1...Qxb2
- 2.Rg4#
- 2.Qe3#
- 2.Qf3#
- 2.Qg3#
- 1...Qxc4
- 2.Qd2#
- 2.Qf3#
- 2.Qg3#
- 1...Bxc4
- 2.Qf3#
- 2.Qg3#
- 1...Sxc4
- 2.Rf5#
- 2.Rf7#
- 2.Qf3#
- 2.Qg3#
- 1...Qd1
- 2.Qe3#
- 2.Qg3#
- 1...Qc1
- 2.Rg4#
- 2.Qf3#
- 2.Qg3#
- 2.Qxd6#
- 1...Qd2
- 2.Rg4#
- 2.Qxd2#
- 2.Qf3#
- 2.Qg3#
- 1...Qe2
- 2.Qg3#
- 1...Qf2
- 2.Rg4#
- 2.Qxd6#
- 1...Qg2
- 2.Qe3#
- 1...Qc3
- 2.Rg4#
- 1...Se4
- 2.Qe3#
- 2.Qf3#
- 1...Sb5
- 2.Rg4#
- 2.Rf5#
- 2.Rf7#
- 2.Qe3#
- 2.Qf3#
- 2.Qg3#
- 1...Sb7
- 2.Rg4#
- 2.Rf5#
- 2.Rf7#
- 2.Qe3#
- 2.Qf3#
- 2.Qg3#
- 1...Sc8
- 2.Rg4#
- 2.Rf5#
- 2.Rf7#
- 2.Qe3#
- 2.Qf3#
- 2.Qg3#
- 1...Se8
- 2.Rg4#
- 2.Rf5#
- 2.Qe3#
- 2.Qf3#
- 2.Qg3#
- 1...Qh2+!
- threat
- 1.Rf5+?
- 1...Sxf5
- 2.Qf3#
- 1...Kg4!
- 1...Sxf5
- 1.Rf7+?
- 1...Sf5
- 2.Rfxf5#
- 2.Qe3#
- 2.Qf3#
- 2.Qg3#
- 2.Qd6#
- 1...Sxf7!
- 1...Sf5
- 1.Qxc2?
- threat
- 2.Sd3#
- 2.Qc1#
- 2.Qd2#
- 2.Qf2#
- 2.Qh2#
- 1...Bxc4
- 2.Qc1#
- 2.Qd2#
- 2.Qf2#
- 1...Sxc4
- 2.Qe4#
- 2.Qf2#
- 1...Se4
- 2.Sd3#
- 2.Qxe4#
- 1...Sf5
- 2.Sd3#
- 2.Qe4#
- 2.Qxf5#
- 2.Qf2#
- 1...Bxc2+!
- threat
- 1.Kh6?
- Keys
- 1.Rh7!
- threat
- 2.Rh4#
- 1...Qxd3+
- 2.Sxd3#
- 1...Qd1
- 2.Qe3#
- 2.Qg3#
- 1...Qe2
- 2.Qg3#
- 1...Qf2
- 2.Qxd6#
- 1...Qg2
- 2.Qe3#
- 1...Qh2
- 2.Qe3#
- 2.Qf3#
- 2.Qxd6#
- 1...Sf5
- 2.Qf3#
- threat
- 1.Rh7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- Q(a);CHECK,XQ(C)::S(B),XQ(a)
- Q(a);N_PINQ(C)::QAB1(C)
- Q(a);N_PINQ(C)::QAB(C),XS(d)
- Q(a);N_PINQ(C),P_PINR(E)::QAB1(C)
- S(d);N_GUARD,XS(D)::R(G)
- S(d);N_GUARD::R(G)
- S(d);N_PINQ(C)::QAR1(C)
- S(d);N_GUARD::R(G),XS(d)
- Tries
- Try
- K(F);N_SPINQ(C),P-FLIGHT
- Threat
- DUALS(5)
- Vars
- S(d);CHECK,N_GUARD::R1(E),XS(d)
- S(d);CHECK,N_GUARD::R(G),XS(d)
- Q(a);XQ(C)::S(B),XQ(a)
- Q(a);::QAB1(C)
- Q(a);::R1(E)
- Refutation
- Q(a);CHECK
- Try
- R(E);CHECK,N_SPINQ(C)
- Vars
- S(d);XR(E)::QAR1(C)
- Refutation
- K(c);P-FLIGHT
- Try
- R(G);CHECK
- Refutation
- S(d);XR(G)
- Try
- Q(C);N_SPINQ(C),XQ(a)
- Threat
- DUALS(5)
- Refutation
- B(b);CHECK,XQ(C)
- Try
- Actual
- R(G);
- Threat
- R(G)
- Vars
- Q(a);CHECK,XQ(C)::S(B),XQ(a)
- Q(a);N_PINQ(C)::QAB1(C)
- Q(a);N_PINQ(C)::QAB(C),XS(d)
- Q(a);N_PINQ(C),P_PINR(E)::QAB1(C)
- S(d);N_PINQ(C)::QAR1(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).