MESON Chess Problem Database

Problem Display
PID: 70864 (q1R5/8/1Bbp4/6R1/p1k1Nn2/P7/1pPrPN2/b3Q1nK w - - 0 1)

Kipping, Cyril Stanley

The Chess Problem, 1948

q1R5/8/1Bbp4/6R1/p1k1Nn2/P7/1pPrPN2/b3Q1nK

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6
      • 2.Rxc6#
    • 1...Qa7
      • 2.Rxc6#
    • 1...Qb8
      • 2.Rxc6#
    • 1...Rd1
      • 2.Qc3#
      • 2.Qb4#
    • 1...Rxc2
      • 2.Qb4#
    • 1...Rxe2
      • 2.Qc3#
      • 2.Qb4#
    • 1...Rd3
      • 2.Qb4#
    • 1...Rd4
      • 2.Qc3#
      • 2.Qb4#
    • 1...Rd5
      • 2.Qb4#
  • Tries
    • 1.Rc5+?
      • 1...Kd4
        • 2.e3#
      • 1...dxc5!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Se3#
      • 1...Rxd1
        • 2.Qc3#
        • 2.Qb4#
      • 1...Rxc2
        • 2.Qb4#
      • 1...Rxe2
        • 2.Qc3#
        • 2.Qb4#
      • 1...Rd5
        • 2.Qb4#
      • 1...Sd5
        • 2.Sxd6#
      • 1...d5
        • 2.Sd6#
      • 1...Rd3
        • 2.Qb4#
      • 1...Sg2
        • 2.Sxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(j);N_GUARD::R(J),XB(h)
    • R(d);OGATE,XP(C)::QAR1(A)
    • R(d);OGATE::QAR1(A)
    • R(d);N_PINS(G),OGATE::QAR1(A)
  • Tries
    • Try
      • R(H);CHECK,N_PINB(h)
      • Vars
        • K(f);P-FLIGHT::P(D)
      • Refutation
        • P(i);XR(H)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • R(d);OGATE,XP(C)::QAR1(A)
      • R(d);N_PINS(G),OGATE::QAR1(A)
      • S(g);N_PINS(G)::S(G),XP(i)
      • P(i);N_PINS(G)::S(G)
      • R(d);OGATE::QAR1(A)
      • S(g);N_PINS(G)::S(G),XR(d)
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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).