MESON Chess Problem Database
Problem Display
PID: 245509 (8/8/4Q3/5n2/R5n1/7k/8/4B1K1 w - - 0 1)
Shumarin, Vladimir Pavlovich
Smena (Moscow), 2002
#2
4 + 3
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sh2
- 2.Rh4#
- 1...Sge3
- 2.Rh4#
- 1...Se5
- 2.Rh4#
- 1...Sf6
- 2.Rh4#
- 1...Sgh6
- 2.Rh4#
- 1...Sg3
- 2.Qxg4#
- 1...Sh4
- 2.Qxg4#
- 1...Sd6
- 2.Ra3#
- 2.Qxg4#
- 1...Sfh6
- 2.Ra3#
- 1...Se7
- 2.Ra3#
- 2.Qxg4#
- 1...Sg7
- 2.Ra3#
- 2.Qxg4#
- 1...Sh2
- Tries
- 1.Ra3+?
- 1...Sge3
- 2.Qxf5#
- 1...Sfe3
- 2.Rxe3#
- 1...Sg3!
- 1...Sge3
- 1.Re4?
- 1...Sg3
- 2.Qxg4#
- 1...Sfe3
- 2.Rxe3#
- 1...Sh2
- 2.Rh4#
- 1...Sge3
- 2.Rh4#
- 1...Se5
- 2.Rh4#
- 1...Sf6
- 2.Rh4#
- 1...Sgh6
- 2.Rh4#
- 1...Sd4
- 2.Qxg4#
- 1...Sh4
- 2.Qxg4#
- 1...Sd6
- 2.Re3#
- 2.Qxg4#
- 1...Sfh6
- 2.Re3#
- 1...Se7
- 2.Re3#
- 2.Qxg4#
- 1...Sg7
- 2.Re3#
- 2.Qxg4#
- 1...Sf2!
- 1...Sg3
- 1.Rf4?
- 1...Sg3
- 2.Qxg4#
- 1...Sfe3
- 2.Rf3#
- 1...Sh2
- 2.Rh4#
- 1...Sge3
- 2.Rh4#
- 1...Se5
- 2.Rh4#
- 1...Sf6
- 2.Rh4#
- 1...Sgh6
- 2.Rh4#
- 1...Sd4
- 2.Qxg4#
- 1...Sh4
- 2.Qxg4#
- 1...Sd6
- 2.Rf3#
- 2.Qxg4#
- 1...Sfh6
- 2.Rf3#
- 1...Se7
- 2.Rf3#
- 2.Qxg4#
- 1...Sg7
- 2.Rf3#
- 2.Qxg4#
- 1...Sf2!
- 1...Sg3
- 1.Qe2?
- threat
- 2.Qf1#
- 2.Qxg4#
- 2.Qg2#
- 1...Sg3
- 2.Qxg4#
- 1...Sfe3
- 2.Qf3#
- 1...Sh2
- 2.Qg2#
- 2.Qxh2#
- 1...Sge3
- 2.Qh2#
- 1...Se5
- 2.Qf1#
- 2.Qg2#
- 2.Qh2#
- 1...Sf6
- 2.Qf1#
- 2.Qg2#
- 2.Qh2#
- 1...Sgh6
- 2.Qf1#
- 2.Qg2#
- 2.Qh2#
- 1...Sd4
- 2.Qf1#
- 2.Qg2#
- 1...Sh4
- 2.Qxg4#
- 1...Sfh6
- 2.Qf1#
- 2.Qf3#
- 2.Qg2#
- 1...Sf2!
- threat
- 1.Qe5?
- 1...Sg3
- 2.Qxg3#
- 1...Sfe3
- 2.Qg3#
- 2.Qh5#
- 1...Sf2
- 2.Qh2#
- 1...Sh2
- 2.Qxh2#
- 1...Sge3
- 2.Qh2#
- 1...Sf6
- 2.Qh2#
- 1...Sgh6
- 2.Qh2#
- 1...Sd4
- 2.Qg3#
- 2.Qh5#
- 1...Sh4
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 2.Qh5#
- 1...Sfh6
- 2.Qg3#
- 2.Qh5#
- 1...Se7
- 2.Qg3#
- 2.Qh5#
- 1...Sg7
- 2.Qg3#
- 1...Sxe5!
- 1...Sg3
- 1.Qg6?
- threat
- 2.Qxg4#
- 1...Sfe3
- 2.Qh5#
- 1...Sf2
- 2.Qg2#
- 1...Sh2
- 2.Qg2#
- 1...Se5
- 2.Qg2#
- 1...Sf6
- 2.Qg2#
- 1...Sgh6
- 2.Qg2#
- 1...Sd4
- 2.Qh5#
- 1...Sfh6
- 2.Qh5#
- 1...Sge3!
- threat
- 1.Ra3+?
- Keys
- 1.Qe4!
- threat
- 2.Qg2#
- 2.Qxg4#
- 1...Sf2
- 2.Qg2#
- 1...Sg3
- 2.Qxg4#
- 1...Sfe3
- 2.Qf3#
- 1...Sh2
- 2.Qg2#
- 1...Sge3
- 2.Qh1#
- 1...Se5
- 2.Qh1#
- 2.Qg2#
- 1...Sf6
- 2.Qh1#
- 2.Qg2#
- 1...Sgh6
- 2.Qh1#
- 2.Qg2#
- 1...Sd4
- 2.Qg2#
- 1...Sh4
- 2.Qxg4#
- 1...Sfh6
- 2.Qg2#
- 2.Qf3#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- S(b);OGATE,P_SPINS(c)::R1(C)
- S(c);OGATE,P_SPINS(b)::QAB1(D),XS(b)
- S(c);N_GUARD,P_SPINS(b)::R(C)
- Tries
- Try
- R(C);CHECK
- Vars
- S(b);P_SPINS(b)::QAB(D),XS(c)
- S(c);N_GUARD,P_SPINS(c),S_CUTS(b)::R(C),XS(c)
- Refutation
- S(c);P_SPINS(c)
- Try
- R(C);
- Vars
- S(c);OGATE,P_SPINS(b)::QAB1(D),XS(b)
- S(c);N_GUARD,P_SPINS(b)::R(C),XS(c)
- S(b);OGATE,P_SPINS(c)::R1(C)
- S(c);N_GUARD,P_SPINS(b)::R(C)
- Refutation
- S(b);P_SPINS(c)
- Try
- R(C);
- Vars
- S(c);OGATE,P_SPINS(b)::QAB1(D),XS(b)
- S(c);N_GUARD,P_SPINS(b)::R(C)
- S(b);OGATE,P_SPINS(c)::R1(C)
- Refutation
- S(b);P_SPINS(c)
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- S(c);::QAB1(D),XS(b)
- S(c);N_GUARD::QAR2(D)
- S(b);N_GUARD::QAR1(D)
- Refutation
- S(b);
- Try
- Q(D);
- Vars
- S(c);N_GUARD::QAR1(D),XS(c)
- S(b);N_GUARD::QAR1(D)
- S(b);N_GUARD::QAR1(D),XS(b)
- S(c);N_GUARD::QAR1(D)
- Refutation
- S(b);XQ(D)
- Try
- Q(D);
- Threat
- QAB1(D),XS(b)
- Vars
- S(c);N_GUARD::QAR2(D)
- S(b);OGATE::QAB1(D)
- Refutation
- S(b);
- Try
- Actual
- Q(D);
- Threat
- DUALS(2)
- Vars
- S(b);::QAB1(D)
- S(c);::QAB1(D),XS(b)
- S(c);N_GUARD::QAR2(D)
- S(b);N_GUARD::QAR2(D)
- S(c);::QAB1(D)
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).