MESON Chess Problem Database
Problem Display
PID: 7487 (k1K5/pR6/n7/4n3/Q7/8/8/8 w - - 0 1)
Moikin, Vladimir
3rd Comm., Bron MT, 1990
#2
3 + 4
| 2838 | Fun with Chess Miniatures | 1996 |
| 145 | StrateGems | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Sb4
- 2.Rxa7#
- 2.Rb8#
- 2.Qxa7#
- 1...Sc5
- 2.Rxa7#
- 2.Rb8#
- 2.Qxa7#
- 1...Sc7
- 2.Rxa7#
- 2.Rb8#
- 2.Qxa7#
- 1...Sb8
- 2.Rxa7#
- 2.Rxb8#
- 2.Qxa7#
- 1...Sb4
- Tries
- 1.Rb1?
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sd7
- 2.Qc6#
- 2.Qe4#
- 1...Sf7
- 2.Qc6#
- 2.Qe4#
- 1...Sc5
- 2.Rb8#
- 1...Sc7
- 2.Rb8#
- 1...Sb8
- 2.Rxb8#
- 1...Sb4!
- 1...Sd3
- 1.Rb2?
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sd7
- 2.Qc6#
- 2.Qe4#
- 1...Sf7
- 2.Qc6#
- 2.Qe4#
- 1...Sc5
- 2.Rb8#
- 1...Sc7
- 2.Rb8#
- 1...Sb8
- 2.Rxb8#
- 1...Sb4!
- 1...Sd3
- 1.Rb3?
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sd7
- 2.Qc6#
- 2.Qe4#
- 1...Sf7
- 2.Qc6#
- 2.Qe4#
- 1...Sc5
- 2.Rb8#
- 1...Sc7
- 2.Rb8#
- 1...Sb8
- 2.Rxb8#
- 1...Sb4!
- 1...Sd3
- 1.Rb4?
- 1...Sd3
- 2.Qc6#
- 1...Sf3
- 2.Qc6#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 1...Sd7
- 2.Qc6#
- 1...Sf7
- 2.Qc6#
- 1...Sc5
- 2.Rb8#
- 1...Sc7
- 2.Rb8#
- 1...Sb8
- 2.Rxb8#
- 1...Sxb4!
- 1...Sd3
- 1.Rc7?
- 1...Sb4
- 2.Rxa7#
- 2.Qxa7#
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sd7
- 2.Qc6#
- 2.Qe4#
- 1...Sf7
- 2.Qc6#
- 2.Qe4#
- 1...Sc5
- 2.Rxa7#
- 2.Qxa7#
- 1...Sb8
- 2.Rxa7#
- 2.Qxa7#
- 1...Sxc7!
- 1...Sb4
- 1.Rd7?
- 1...Sxd7
- 2.Qc6#
- 2.Qe4#
- 1...Sb4
- 2.Rxa7#
- 2.Qxa7#
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sf7
- 2.Qc6#
- 2.Qe4#
- 1...Sc5
- 2.Rxa7#
- 2.Qxa7#
- 1...Sb8
- 2.Rxa7#
- 2.Qxa7#
- 1...Sc7!
- 1...Sxd7
- 1.Re7?
- 1...Sb4
- 2.Rxa7#
- 2.Qxa7#
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sd7
- 2.Qc6#
- 2.Qe4#
- 1...Sf7
- 2.Qc6#
- 2.Qe4#
- 1...Sc5
- 2.Rxa7#
- 2.Qxa7#
- 1...Sb8
- 2.Rxa7#
- 2.Qxa7#
- 1...Sc7!
- 1...Sb4
- 1.Rf7?
- 1...Sxf7
- 2.Qc6#
- 2.Qe4#
- 1...Sb4
- 2.Rxa7#
- 2.Qxa7#
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sd7
- 2.Qc6#
- 2.Qe4#
- 1...Sc5
- 2.Rxa7#
- 2.Qxa7#
- 1...Sb8
- 2.Rxa7#
- 2.Qxa7#
- 1...Sc7!
- 1...Sxf7
- 1.Rg7?
- 1...Sb4
- 2.Rxa7#
- 2.Qxa7#
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sd7
- 2.Qc6#
- 2.Qe4#
- 1...Sf7
- 2.Qc6#
- 2.Qe4#
- 1...Sc5
- 2.Rxa7#
- 2.Qxa7#
- 1...Sb8
- 2.Rxa7#
- 2.Qxa7#
- 1...Sc7!
- 1...Sb4
- 1.Rh7?
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sd7
- 2.Qc6#
- 2.Qe4#
- 1...Sf7
- 2.Qc6#
- 2.Qe4#
- 1...Sb4
- 2.Rxa7#
- 2.Qxa7#
- 1...Sc5
- 2.Rxa7#
- 2.Qxa7#
- 1...Sb8
- 2.Rxa7#
- 2.Qxa7#
- 1...Sc7!
- 1...Sd3
- 1.Qc6?
- threat
- 2.Rb8#
- 1...Sb8
- 2.Rxb8#
- 1...Sxc6!
- threat
- 1.Qd4?
- threat
- 2.Rxa7#
- 2.Qxa7#
- 1...Sc5
- 2.Rb8#
- 1...Sc6!
- threat
- 1.Qe4?
- threat
- 2.Rb8#
- 1...Sb8
- 2.Rxb8#
- 1...Sc6!
- threat
- 1.Qxa6?
- threat
- 2.Rxa7#
- 2.Rb8#
- 2.Qxa7#
- 1...Sd7
- 2.Rxa7#
- 2.Qxa7#
- 1...Sc6!
- threat
- 1.Rb1?
- Keys
- 1.Rb6!
- 1...axb6
- 2.Qxa6#
- 1...Sb4
- 2.Rb8#
- 1...Sd3
- 2.Qc6#
- 2.Qe4#
- 1...Sf3
- 2.Qc6#
- 2.Qe4#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 2.Qe4#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 2.Qe4#
- 1...Sd7
- 2.Qc6#
- 2.Qe4#
- 1...Sf7
- 2.Qc6#
- 2.Qe4#
- 1...Sc5
- 2.Rb8#
- 1...Sc7
- 2.Rb8#
- 1...Sb8
- 2.Rxb8#
- 1...axb6
- 1.Rb6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- Tries
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(b);N_GUARD,P_SPINP(c)::R1(B)
- S(b);N_GUARD,P_SPINP(c)::R1(B),XS(b)
- Refutation
- S(b);P_SPINP(c)
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(b);N_GUARD,P_SPINP(c)::R1(B)
- S(b);N_GUARD,P_SPINP(c)::R1(B),XS(b)
- Refutation
- S(b);P_SPINP(c)
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(b);N_GUARD,P_SPINP(c)::R1(B)
- S(b);N_GUARD,P_SPINP(c)::R1(B),XS(b)
- Refutation
- S(b);P_SPINP(c)
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(b);N_GUARD,P_SPINP(c)::R1(B)
- S(b);N_GUARD,P_SPINP(c)::R1(B),XS(b)
- Refutation
- S(b);P_SPINP(c),XR(B)
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- S(b);P_SPINP(c),XR(B)
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- S(b);P_SPINP(c)
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- S(b);P_SPINP(c)
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- S(b);P_SPINP(c)
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- S(b);P_SPINP(c)
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- S(b);P_SPINP(c)
- Try
- Q(A);
- Threat
- QAB(A)+R(B),DCHECK
- Vars
- S(b);::QAB(A)+R(B),DCHECK,XS(b)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::R1(B)
- Refutation
- S(a);
- Try
- Q(A);
- Threat
- QAB(A)+R(B),DCHECK
- Vars
- S(b);::QAB(A)+R(B),DCHECK,XS(b)
- Refutation
- S(a);
- Try
- Q(A);P_PINP(c),XS(b)
- Threat
- DUALS(3)
- Refutation
- S(a);
- Try
- Actual
- R(B);
- Vars
- P(c);OGATEB,P_SPINS(b),XR(B)::QAR2(A),XS(b)
- S(b);N_GUARD,P_SPINP(c)::R1(B)
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(b);N_GUARD,P_SPINP(c)::R1(B),XS(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).