MESON Chess Problem Database

Problem Display
PID: 144882 (4r3/3R1R2/7p/B7/rq4QK/1n5p/8/n2Nk3 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1955

4r3/3R1R2/7p/B7/rq4QK/1n5p/8/n2Nk3

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxe4#
    • 1...Ra8
      • 2.Qe4#
    • 1...Rb8
      • 2.Qe4#
    • 1...Rc8
      • 2.Qe4#
    • 1...Rd8
      • 2.Qe4#
    • 1...Rf8
      • 2.Qe4#
    • 1...Rg8
      • 2.Qe4#
    • 1...Rh8
      • 2.Qe4#
  • Tries
    • 1.Se3?
      • threat
        • 2.Rd1#
        • 2.Rf1#
      • 1...Rxe3
        • 2.Rd1#
      • 1...Sd4
        • 2.Qd1#
      • 1...Qd2
        • 2.Rf1#
      • 1...Rd8
        • 2.Rf1#
      • 1...Rf8
        • 2.Rd1#
      • 1...Sd2!
    • 1.Bxb4+?
      • 1...Sd2
        • 2.Bxd2#
      • 1...Rxb4!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Rd1#
      • 1...Sd4
        • 2.Qd1#
      • 1...Qd2
        • 2.Sd3#
      • 1...Rd8
        • 2.Qe4#
      • 1...Sd2
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD::QAR(B),XR(h)
    • R(h);N_GUARD::QAR(B)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);XS(A)::R1(E)
        • S(c);N_PINQ(B)::QAR1(B)
        • Q(f);::R1(F)
        • R(h);::R1(F)
        • R(h);::R1(E)
      • Refutation
        • S(c);N_SPINQ(f)
    • Try
      • B(D);CHECK,N_SPINQ(B),XQ(f)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::B(D),XS(c)
      • Refutation
        • R(e);P_PINQ(B),XB(D)
  • Actual
    • S(A);
    • Threat
      • R1(E)
    • Vars
      • S(c);N_PINQ(B)::QAR1(B)
      • Q(f);::S(A)
      • R(h);N_GUARD::QAR(B)
      • S(c);N_SPINQ(f),SBLOCK::S(A)
HTML5 logo

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).