MESON Chess Problem Database
Problem Display
PID: 66954 (nbNN4/4B1R1/5r2/3pkB2/R2n2Qp/5p2/4p2K/8 w - - 0 1)
Vladimirov, Yakov Georgevich
Bulletin of the Central Chess Club of USSR, 1978
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxf5
- 2.Qxd4#
- 1...Ra6
- 2.Sf7#
- 1...Rb6
- 2.Sf7#
- 1...Rc6
- 2.Sf7#
- 1...Rd6
- 2.Sf7#
- 1...Re6
- 2.Sf7#
- 1...Rg6
- 2.Sf7#
- 1...Rh6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Sc2
- 2.Qf4#
- 1...Sb3
- 2.Qf4#
- 1...Sb5
- 2.Qf4#
- 1...Sxf5
- 2.Qf4#
- 1...Sc6
- 2.Qf4#
- 1...Se6
- 2.Sc6#
- 1...Rxf5
- Tries
- 1.Sb6?
- threat
- 2.Sd7#
- 1...Rxb6
- 2.Sf7#
- 1...Rd6
- 2.Sf7#
- 1...Sxb6!
- threat
- 1.Sc6+?
- 1...Sxc6
- 2.Qf4#
- 1...Rxc6!
- 1...Sxc6
- 1.Be6?
- threat
- 2.Qxd4#
- 1...Rxe6
- 2.Sf7#
- 1...Sxe6
- 2.Sc6#
- 1...Ba7
- 2.Bd6#
- 1...Sc2
- 2.Sc6#
- 1...Sb3
- 2.Sc6#
- 1...Sb5
- 2.Sc6#
- 1...Sf5
- 2.Qf4#
- 1...Sc6
- 2.Sxc6#
- 1...Rf4!
- threat
- 1.Bc5?
- threat
- 2.Bxd4#
- 1...Sxf5
- 2.Qf4#
- 1...Sc2
- 2.Qf4#
- 1...Sb3
- 2.Qf4#
- 1...Sb5
- 2.Qf4#
- 1...Sc6
- 2.Qf4#
- 1...Se6
- 2.Sc6#
- 1...Ba7!
- threat
- 1.Rg5?
- threat
- 2.Qxd4#
- 1...Sxf5
- 2.Qd4#
- 2.Qf4#
- 1...Sc2
- 2.Qf4#
- 1...Sb3
- 2.Qf4#
- 1...Sb5
- 2.Qf4#
- 1...Sc6
- 2.Qf4#
- 1...Se6
- 2.Sc6#
- 1...Ba7!
- threat
- 1.Rg6?
- threat
- 2.Bxf6#
- 1...Rxf5
- 2.Qxd4#
- 1...Rxg6
- 2.Sf7#
- 1...Ra6
- 2.Sf7#
- 1...Rb6
- 2.Sf7#
- 1...Rc6
- 2.Sf7#
- 1...Rd6
- 2.Sf7#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Rf8!
- threat
- 1.Qg5?
- threat
- 2.Bxf6#
- 1...Rxf5
- 2.Qe3#
- 1...Ra6
- 2.Sf7#
- 1...Rb6
- 2.Sf7#
- 1...Rc6
- 2.Sf7#
- 1...Rd6
- 2.Sf7#
- 1...Re6
- 2.Sf7#
- 1...Rg6
- 2.Sf7#
- 1...Rh6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Rf8!
- threat
- 1.Sb6?
- Keys
- 1.Rf7!
- threat
- 2.Bxf6#
- 1...Rxf5
- 2.Qxd4#
- 1...Rxf7
- 2.Sxf7#
- 1...Ra6
- 2.Qxd4#
- 1...Rb6
- 2.Qxd4#
- 1...Rc6
- 2.Qxd4#
- 1...Rd6
- 2.Qxd4#
- 1...Re6
- 2.Qxd4#
- 1...Rg6
- 2.Qxd4#
- 1...Rh6
- 2.Qxd4#
- threat
- 1.Rf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- R(g);SBLOCK,XB(D)::QAB1(C),XS(c)
- R(g);N_GUARD::S(H)
- R(g);N_GUARD::S(H),XR(g)
- S(c);::QAB1(C)
- S(c);XB(D)::QAB1(C)
- S(c);N_GUARD,S_CUTR(g)::S(H)
- Tries
- Try
- S(G);
- Threat
- S(G)
- Vars
- R(g);N_GUARD,XS(G)::S(H)
- R(g);N_GUARD::S(H)
- Refutation
- S(h);XS(G)
- Try
- S(H);CHECK
- Vars
- S(c);XS(H)::QAB1(C)
- Refutation
- R(g);XS(H)
- Try
- B(D);
- Threat
- QAB1(C),XS(c)
- Vars
- R(g);N_GUARD,XB(D)::S(H)
- S(c);N_GUARD,XB(D)::S(H)
- B(i);N_GUARD::B(E)
- S(c);N_GUARD::S(H)
- S(c);S_CUTR(g)::QAB1(C)
- S(c);N_GUARD::S(H),XS(c)
- Refutation
- R(g);
- Try
- B(E);
- Threat
- B(E),XS(c)
- Vars
- S(c);XB(D)::QAB1(C)
- S(c);::QAB1(C)
- S(c);N_GUARD,S_CUTR(g)::S(H)
- Refutation
- B(i);
- Try
- R(F);
- Threat
- QAB1(C),XS(c)
- Vars
- S(c);::QAB1(C)
- S(c);N_GUARD,S_CUTR(g)::S(H)
- Refutation
- B(i);
- Try
- R(F);
- Threat
- B(E),XR(g)
- Vars
- R(g);SBLOCK,XB(D)::QAB1(C),XS(c)
- R(g);N_GUARD,XR(F)::S(H)
- R(g);N_GUARD::S(H)
- R(g);N_GUARD::S(H),XR(g)
- Refutation
- R(g);
- Try
- Q(C);
- Threat
- B(E),XR(g)
- Vars
- R(g);P_SPINR(g),SBLOCK,XB(D)::QAR2(C)
- R(g);N_GUARD::S(H)
- R(g);N_GUARD::S(H),XR(g)
- Refutation
- R(g);
- Try
- Actual
- R(F);
- Threat
- B(E),XR(g)
- Vars
- R(g);XB(D)::QAB1(C),XS(c)
- R(g);XR(F)::S(H),XR(g)
- R(g);::QAB1(C),XS(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).