MESON Chess Problem Database
Problem Display
PID: 6521 (8/4Q1Pr/6rk/4N1N1/6P1/6K1/8/8 w - - 0 1)
Kainer, Cenek
Ceskoslovenska republika, 1931
#2
6 + 3
SOLUTION
- SOUND
- Sets
- 1...Ra6
- 2.g8S#
- 1...Rb6
- 2.g8S#
- 1...Rc6
- 2.g8S#
- 1...Rd6
- 2.g8S#
- 1...Re6
- 2.g8S#
- 1...Rf6
- 2.Qxf6#
- 1...Rh8
- 2.gxh8Q#
- 2.gxh8R#
- 1...Ra6
- Tries
- 1.Sgf3?
- 1...Rgxg7
- 2.Qh4#
- 1...Rhxg7
- 2.Qh4#
- 1...Rh8
- 2.gxh8Q#
- 2.gxh8R#
- 1...Rg5
- 2.Qxg5#
- 1...Ra6
- 2.Qg5#
- 2.g8S#
- 1...Rb6
- 2.Qg5#
- 2.g8S#
- 1...Rc6
- 2.Qg5#
- 2.g8S#
- 1...Rd6
- 2.Qg5#
- 2.g8S#
- 1...Re6
- 2.Qg5#
- 2.g8S#
- 1...Rf6
- 2.Qxf6#
- 2.g8S#
- 1...Rxg4+!
- 1...Rgxg7
- 1.Sh3?
- 1...Rgxg7
- 2.Qh4#
- 1...Rhxg7
- 2.Qh4#
- 1...Rh8
- 2.gxh8Q#
- 2.gxh8R#
- 1...Rg5
- 2.Qxg5#
- 1...Ra6
- 2.Qg5#
- 2.g8S#
- 1...Rb6
- 2.Qg5#
- 2.g8S#
- 1...Rc6
- 2.Qg5#
- 2.g8S#
- 1...Rd6
- 2.Qg5#
- 2.g8S#
- 1...Re6
- 2.Qg5#
- 2.g8S#
- 1...Rf6
- 2.Qxf6#
- 2.g8S#
- 1...Rxg4+!
- 1...Rgxg7
- 1.Se4?
- 1...Rgxg7
- 2.Qh4#
- 1...Rhxg7
- 2.Qh4#
- 1...Rh8
- 2.gxh8Q#
- 2.gxh8R#
- 1...Rg5
- 2.Qxg5#
- 1...Ra6
- 2.Qg5#
- 2.g8S#
- 1...Rb6
- 2.Qg5#
- 2.g8S#
- 1...Rc6
- 2.Qg5#
- 2.g8S#
- 1...Rd6
- 2.Qg5#
- 2.g8S#
- 1...Re6
- 2.Qg5#
- 2.g8S#
- 1...Rf6
- 2.Qxf6#
- 2.g8S#
- 1...Rxg4+!
- 1...Rgxg7
- 1.Se6?
- threat
- 2.Sf7#
- 2.Qh4#
- 1...Rxe6
- 2.g8S#
- 1...Rgxg7
- 2.Qh4#
- 1...Rhxg7
- 2.Qh4#
- 1...Rh8
- 2.Qh4#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Rg5
- 2.Qxg5#
- 1...Rf6
- 2.Qxf6#
- 2.g8S#
- 1...Rxg4+!
- threat
- 1.Sgf3?
- Keys
- 1.Qf8!
- threat
- 2.Sef7#
- 2.Sgf7#
- 1...Kxg5
- 2.Qf4#
- 1...Rxg5
- 2.g8S#
- 1...Rgxg7
- 2.Sgf7#
- 1...Rhxg7
- 2.Sef7#
- 1...Ra6
- 2.Sgf7#
- 1...Rb6
- 2.Sgf7#
- 1...Rc6
- 2.Sgf7#
- 1...Rd6
- 2.Sgf7#
- 1...Re6
- 2.Sgf7#
- 1...Rf6
- 2.Qxf6#
- 1...Rh8
- 2.Sef7#
- threat
- 1.Qf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD,SBLOCK::P=S
- R(a);N_GUARD::P=S
- R(a);OGATEB::QAR2(E),XR(a)
- R(c);OGATE::PXR(c)=Q
- Tries
- Try
- S(D);P_SPINP(B)
- Vars
- R(a);SBLOCK,XP(F)::QAR2(E)
- R(c);SBLOCK,XP(F)::QAR2(E)
- R(c);OGATE::PXR(c)=Q
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);CHECK,XP(B)
- Try
- S(D);P_SPINP(B)
- Vars
- R(a);SBLOCK,XP(F)::QAR2(E)
- R(c);SBLOCK,XP(F)::QAR2(E)
- R(c);OGATE::PXR(c)=Q
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);CHECK,XP(B)
- Try
- S(D);P_SPINP(B)
- Vars
- R(a);SBLOCK,XP(F)::QAR2(E)
- R(c);SBLOCK,XP(F)::QAR2(E)
- R(c);OGATE::PXR(c)=Q
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);CHECK,XP(B)
- Try
- S(D);P_SPINP(B)
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,N_PINP(B),XS(D)::P=S
- R(a);XP(F)::QAR2(E)
- R(c);XP(F)::QAR2(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);CHECK,XP(B)
- Try
- Actual
- Q(E);
- Threat
- DUALS(2)
- Vars
- K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(E)
- R(a);N_GUARD,P_PINP(B),SBLOCK,XS(D)::P=S
- R(a);P_SPINR(a),XP(F)::S(D)
- R(c);P_SPINR(c),XP(F)::S(C)
- R(a);SBLOCK::S(D)
- R(a);::S(D)
- R(a);OGATEB::QAR2(E),XR(a)
- R(c);::S(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).