MESON Chess Problem Database

Problem Display
PID: 63295 (3R4/7B/8/8/r2p2QK/1rNn4/1pNkP2R/2b5 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1945

3R4/7B/8/8/r2p2QK/1rNn4/1pNkP2R/2b5

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.exd3#
    • 1...dxc3
      • 2.exd3#
      • 2.e3#
      • 2.e4#
  • Tries
    • 1.Sb1+?
      • 1...Kd1
        • 2.exd3#
        • 2.e3#
        • 2.e4#
      • 1...Kxc2!
    • 1.Se4+?
      • 1...Kd1
        • 2.exd3#
        • 2.e3#
      • 1...Kxc2!
    • 1.e3+?
      • 1...Sf2
        • 2.Sb1#
      • 1...Kxc3!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxd3#
      • 1...dxc3+
        • 2.e4#
      • 1...Kxc2
        • 2.Qxd3#
      • 1...Kxc3
        • 2.Qxd3#
      • 1...Rxc3
        • 2.exd3#
      • 1...Se1
        • 2.Qe3#
      • 1...Sf2
        • 2.Qe3#
      • 1...Sb4
        • 2.Qe3#
        • 2.e4#
      • 1...Sf4
        • 2.Qe3#
      • 1...Sc5
        • 2.Qe3#
        • 2.e4#
      • 1...Se5
        • 2.Qe3#
        • 2.e4#

This is a version of 57458

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK,XS(D)::R(C)+P(B),XS(e)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(e),XS(A)
    • Try
      • S(D);CHECK
      • Refutation
        • K(c);P-FLIGHT,XS(A)
    • Try
      • P(B);CHECK
      • Vars
        • S(e);P_SPINP(g),P_SPINS(e)::S(D)
      • Refutation
        • K(c);S_FLIGHT,XS(D)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E),XS(e)
    • Vars
      • P(g);CHECK,P_SPINS(e),SBLOCK,XS(D)::R(C)+P(B)
      • K(c);P-FLIGHT,P_SPINS(e),XS(A)::QAB1(E),XS(e)
      • K(c);P_SPINS(e),S_FLIGHT,XS(D)::QAR1(E),XS(e)
      • R(d);SBLOCK,XS(D)::R(C)+P(B),XS(e)
      • S(e);P_SPINP(g)::QAB1(E)
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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).