MESON Chess Problem Database
Problem Display
PID: 150158 (7Q/1RKR4/4pp2/p3n3/P3kPB1/4P3/3Pn1N1/8 w - - 0 1)
Kirillov, Valery Afanasievich
The Problemist, 2013
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Rd4#
- 1...Sg1
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sg3
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sxf4
- 2.Rd4#
- 1...Sf3
- 2.d3#
- 1...Sc4
- 2.d3#
- 1...Sc6
- 2.d3#
- 1...Sg6
- 2.d3#
- 1...Sf7
- 2.d3#
- 1...f5
- 2.Qxe5#
- 1...Sc1
- Tries
- 1.Rb3?
- 1...Sxf4
- 2.Rd4#
- 1...Sxd7
- 2.Qa8#
- 1...Sc1
- 2.Rd4#
- 1...Sg1
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sg3
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sd3
- 2.Qa8#
- 1...Sf3
- 2.Qa8#
- 2.d3#
- 1...Sc4
- 2.Qa8#
- 2.d3#
- 1...Sc6
- 2.d3#
- 1...Sg6
- 2.Qa8#
- 2.d3#
- 1...Sf7
- 2.Qa8#
- 2.d3#
- 1...f5
- 2.Qxe5#
- 1...Sxg4!
- 1...Sxf4
- 1.Rb4+?
- 1...Sd4
- 2.Rbxd4#
- 2.Rdxd4#
- 1...Sc4
- 2.Qa8#
- 2.d3#
- 1...axb4!
- 1...Sd4
- 1.Rb5?
- 1...Sxf4
- 2.Rd4#
- 1...Sxg4
- 2.Qa8#
- 1...Sd4
- 2.Rxd4#
- 1...Sc1
- 2.Rd4#
- 1...Sg1
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sg3
- 2.Rd4#
- 1...Sd3
- 2.Qa8#
- 1...Sf3
- 2.Qa8#
- 2.d3#
- 1...Sc4
- 2.Qa8#
- 2.d3#
- 1...Sc6
- 2.d3#
- 1...Sg6
- 2.Qa8#
- 2.d3#
- 1...Sf7
- 2.Qa8#
- 2.d3#
- 1...f5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sxd7!
- 1...Sxf4
- 1.Qh1?
- 1...Sxf4
- 2.Rd4#
- 1...Sxg4
- 2.Sh4#
- 1...Sxd7
- 2.Se1#
- 1...Sd4
- 2.Rxd4#
- 1...Sc1
- 2.Rd4#
- 1...Sg1
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sg3
- 2.Rd4#
- 1...Sd3
- 2.Se1#
- 2.Sh4#
- 1...Sf3
- 2.Qb1#
- 2.d3#
- 1...Sc4
- 2.Se1#
- 2.Sh4#
- 2.Qb1#
- 2.d3#
- 1...Sc6
- 2.Se1#
- 2.Sh4#
- 2.Qb1#
- 2.d3#
- 1...Sg6
- 2.Se1#
- 2.Sh4#
- 2.Qb1#
- 2.d3#
- 1...Sf7
- 2.Se1#
- 2.Sh4#
- 2.Qb1#
- 2.d3#
- 1...f5!
- 1...Sxf4
- 1.Qh7+?
- 1...Sg6
- 2.d3#
- 1...f5!
- 1...Sg6
- 1.Rb3?
- Keys
- 1.Qa8!
- threat
- 2.Rb4#
- 1...Sxg4
- 2.Rb5#
- 1...Sxd7
- 2.Rb3#
- 1...Sd4
- 2.Rxd4#
- 1...Sc6
- 2.d3#
- threat
- 1.Qa8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- S(a);N_GUARD::R1(I)
- S(a);N_GUARD::R1(I),XS(a)
- S(a);N_GUARD,XP(E)::R1(I)
- S(d);N_GUARD::P(A)
- P(f);OGATE::QAR1(J),XS(d)
- Tries
- Try
- R(G);
- Vars
- S(a);N_GUARD,XP(E)::R1(I)
- S(d);N_GUARD,XR(I)::QAB(J)
- S(a);N_GUARD::R1(I)
- S(a);N_GUARD::R1(I),XS(a)
- S(d);N_GUARD::QAB(J)
- S(d);N_GUARD::P(A)
- P(f);OGATE::QAR1(J),XS(d)
- Refutation
- S(d);XB(F)
- Try
- R(G);CHECK
- Refutation
- P(c);XR(G)
- Try
- R(G);
- Vars
- S(a);N_GUARD,XP(E)::R1(I)
- S(d);N_GUARD,XB(F)::QAB(J)
- S(a);N_GUARD::R1(I),XS(a)
- S(a);N_GUARD::R1(I)
- S(d);N_GUARD::QAB(J)
- S(d);N_GUARD::P(A)
- Refutation
- S(d);XR(I)
- Try
- Q(J);
- Vars
- S(a);N_GUARD,XP(E)::R1(I)
- S(d);N_GUARD,XB(F)::QAB(J)+S(B)
- S(d);N_GUARD,XR(I)::QAB(J)+S(B)
- S(a);N_GUARD::R1(I),XS(a)
- S(a);N_GUARD::R1(I)
- Refutation
- P(f);
- Try
- Q(J);CHECK
- Vars
- S(d);P_SPINS(d)::P(A)
- Refutation
- P(f);P_SPINP(f)
- Try
- Actual
- Q(J);
- Threat
- QAB(J)+R(G),DCHECK
- Vars
- S(d);N_GUARD,XB(F)::QAB(J)+R(G)
- S(d);N_GUARD,XR(I)::QAB(J)+R(G)
- S(a);N_GUARD::R1(I),XS(a)
- S(d);N_GUARD::P(A)
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).