MESON Chess Problem Database
Problem Display
PID: 86411 (2N2N2/1n1pB1p1/3n2P1/5k1r/2p3Rr/2p2PPp/1pP1Q2p/1K5B w - - 0 1)
Rudenko, Valentin Fedorovich
Probleemblad, 1961
#2
11 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxg4
- 2.fxg4#
- 1...Rg5
- 2.Rxg5#
- 1...Rh6
- 2.Rg5#
- 1...Rh7
- 2.Rg5#
- 1...Rh8
- 2.Rg5#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sf7
- 2.Qe4#
- 1...Sxc8
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...Rxg4
- Tries
- 1.Sxd7?
- threat
- 2.Qe5#
- 1...Rg5
- 2.Rxg5#
- 1...Se4
- 2.Qxe4#
- 1...Sf7
- 2.Qe4#
- 1...Rxg4!
- threat
- 1.Sh7?
- 1...Rxh7
- 2.Rg5#
- 1...Sxc8
- 2.Qe4#
- 1...Rg5
- 2.Rxg5#
- 1...Se4
- 2.Qxe4#
- 1...Sa5
- 2.Sxd6#
- 1...Rh6
- 2.Rg5#
- 1...Sb5
- 2.Qe4#
- 1...Sf7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...Rxg4!
- 1...Rxh7
- 1.Bxh4?
- threat
- 2.Se7#
- 2.Rf4#
- 1...Sxc8
- 2.Rf4#
- 2.Qe4#
- 1...Rg5
- 2.Rf4#
- 1...Se4
- 2.Qxe4#
- 1...Rxh4!
- threat
- 1.Bd8?
- 1...Rxg4
- 2.fxg4#
- 1...Sxc8
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa5
- 2.Sxd6#
- 1...Rg5
- 2.Rxg5#
- 1...Rh6
- 2.Rg5#
- 1...Rh7
- 2.Rg5#
- 1...Rh8
- 2.Rg5#
- 1...Sb5
- 2.Qe4#
- 1...Sf7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sc5
- 2.Sxd6#
- 1...Sxd8!
- 1...Rxg4
- 1.Rxh4?
- threat
- 2.Rf4#
- 2.Rxh5#
- 1...Se4
- 2.Qxe4#
- 1...Rg5
- 2.Rf4#
- 1...Rh6
- 2.Rf4#
- 1...Rh7
- 2.Rf4#
- 1...Rh8
- 2.Rf4#
- 1...Sf7
- 2.Rf4#
- 2.Qe4#
- 1...Rxh4!
- threat
- 1.Qd3+?
- 1...Ke5
- 2.f4#
- 1...Se4
- 2.Qxe4#
- 2.Qd5#
- 1...cxd3!
- 1...Ke5
- 1.Qe1?
- 1...Sxc8
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa5
- 2.Sxd6#
- 1...Rg5
- 2.Rxg5#
- 1...Rh6
- 2.Rg5#
- 1...Rh7
- 2.Rg5#
- 1...Rh8
- 2.Rg5#
- 1...Sb5
- 2.Qe4#
- 1...Sf7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...Rxg4!
- 1...Sxc8
- 1.Sxd7?
- Keys
- 1.f4!
- 1...Rxg4
- 2.Qe5#
- 1...Sxc8
- 2.Be4#
- 1...Sa5
- 2.Sxd6#
- 1...Rg5
- 2.Rxg5#
- 1...Rh6
- 2.Rg5#
- 1...Rh7
- 2.Rg5#
- 1...Rh8
- 2.Rg5#
- 1...Se4
- 2.Bxe4#
- 1...Sb5
- 2.Be4#
- 1...Sf7
- 2.Be4#
- 1...Se8
- 2.Be4#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...Rxg4
- 1.f4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(f);OGATE,XR(G)::P(E),XR(f)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- S(i);N_GUARD::QAB1(D),XS(i)
- S(i);N_GUARD::QAB1(D)
- S(i);N_GUARD,XS(J)::QAB1(D)
- S(j);N_GUARD::S(J),XS(i)
- Tries
- Try
- S(K);XP(k)
- Threat
- QAR1(D)
- Vars
- R(h);N_GUARD::R1(G),XR(h)
- S(i);N_GUARD::QAB1(D),XS(i)
- S(i);N_GUARD::QAB1(D)
- Refutation
- R(f);XR(G)
- Try
- S(K);
- Vars
- R(h);N_GUARD,XS(K)::R1(G)
- S(i);N_GUARD,XS(J)::QAB1(D)
- R(h);N_GUARD::R1(G),XR(h)
- S(i);N_GUARD::QAB1(D),XS(i)
- S(j);N_GUARD::S(J),XS(i)
- R(h);N_GUARD::R1(G)
- S(i);N_GUARD::QAB1(D)
- Refutation
- R(f);XR(G)
- Try
- B(I);XR(f)
- Threat
- DUALS(2)
- Vars
- R(h);::R1(G)
- S(i);N_GUARD::QAB1(D),XS(i)
- Refutation
- R(h);XB(I)
- Try
- B(I);
- Vars
- R(f);OGATE,XR(G)::P(E),XR(f)
- S(i);N_GUARD,XS(J)::QAB1(D)
- S(i);N_GUARD::QAB1(D),XS(i)
- S(j);N_GUARD::S(J),XS(i)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- S(i);N_GUARD::QAB1(D)
- Refutation
- S(j);XB(I)
- Try
- R(G);XR(f)
- Threat
- DUALS(2)
- Vars
- S(i);N_GUARD::QAB1(D),XS(i)
- R(h);::R1(G)
- Refutation
- R(h);XR(G)
- Try
- Q(D);CHECK
- Vars
- K(g);P-FLIGHT::P(E)
- Refutation
- P(e);XQ(D)
- Try
- Q(D);
- Vars
- S(i);N_GUARD,XS(J)::QAB1(D)
- S(i);N_GUARD::QAB1(D),XS(i)
- S(j);N_GUARD::S(J),XS(i)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- S(i);N_GUARD::QAB1(D)
- Refutation
- R(f);XR(G)
- Try
- Actual
- P(E);
- Vars
- R(f);SBLOCK,XR(G)::QAR1(D)
- S(i);N_GUARD,XS(J)::B(B)
- S(j);N_GUARD::S(J),XS(i)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- S(i);N_GUARD::B(B),XS(i)
- S(i);N_GUARD::B(B)
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).