MESON Chess Problem Database

Problem Display
PID: 241630 (rQ4nK/4p3/p5Rp/2p1R3/3q4/1B1N4/2PN1Pb1/k7 w - - 0 1)

Kipping, Cyril Stanley

Magyar Sakkvilag, 1934

rQ4nK/4p3/p5Rp/2p1R3/3q4/1B1N4/2PN1Pb1/k7

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5+
      • 2.Qxe5#
    • 1...Qa4
      • 2.Re1#
    • 1...Qb4
      • 2.Re1#
    • 1...Qc4
      • 2.Re1#
    • 1...Qf4
      • 2.Re1#
    • 1...Qh4
      • 2.Re1#
    • 1...Qd5
      • 2.Re1#
    • 1...Qd6
      • 2.Re1#
    • 1...Qd7
      • 2.Re1#
    • 1...Qd8
      • 2.Re1#
    • 1...Bh1
      • 2.Rg1#
    • 1...Be4
      • 2.Rg1#
    • 1...Bd5
      • 2.Rg1#
    • 1...Bc6
      • 2.Rg1#
    • 1...Bb7
      • 2.Rg1#
    • 1...Sf6
      • 2.Re1#
  • Tries
    • 1.Rxa6+?
      • 1...Qa4
        • 2.Re1#
      • 1...Rxa6!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Qb1#
      • 1...Qxe5+
        • 2.Qxe5#
      • 1...Rxb8
        • 2.Rxa6#
      • 1...Qb2
        • 2.Qxb2#
      • 1...Bb7
        • 2.Rg1#
      • 1...Sf6
        • 2.Re1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(c);CHECK,OGATE,XR(F)::QAB(H),XQ(c)
    • Q(c);N_PINR(F)::R(F)
    • B(b);OGATE::R(G)
    • S(i);N_PINR(F),P_PINQ(H)::R(F)
  • Tries
    • Try
      • R(G);CHECK,XP(e)
      • Vars
        • Q(c);N_PINR(F),P_SPINQ(c)::R(F)
      • Refutation
        • R(h);XR(G)
  • Actual
    • B(D);
    • Threat
      • QAR1(H)
    • Vars
      • Q(c);CHECK,OGATE,XR(F)::QAB(H),XQ(c)
      • R(h);N_GUARD,XQ(H)::R(G),XP(e)
      • Q(c);N_GUARD::QAB1(H),XQ(c)
      • B(b);OGATE::R(G)
      • S(i);N_PINR(F),P_PINQ(H)::R(F)
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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).