MESON Chess Problem Database

Problem Display
PID: 140078 (rk1B1R1q/p4p2/pbP2N2/8/6Bp/4p3/1r4Q1/1R2n2K w - - 0 1)

Kipping, Cyril Stanley

The Problemist, 1938

rk1B1R1q/p4p2/pbP2N2/8/6Bp/4p3/1r4Q1/1R2n2K

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Bxb6#
    • 1...Qh7
      • 2.Bxb6#
    • 1...Ra2
      • 2.c7#
    • 1...Rd2
      • 2.c7#
    • 1...Re2
      • 2.c7#
    • 1...Rf2
      • 2.c7#
    • 1...Bd4
      • 2.c7#
    • 1...Bc5
      • 2.c7#
    • 1...Bxd8
      • 2.Qh2#
  • Tries
    • 1.Rxh8?
      • threat
        • 2.Bxb6#
      • 1...Bxd8
        • 2.Qh2#
      • 1...Rd2
        • 2.c7#
      • 1...Bd4
        • 2.Ba5#
        • 2.Bb6#
        • 2.c7#
      • 1...Ba5
        • 2.Bxa5#
        • 2.Bb6#
      • 1...Bc5
        • 2.c7#
      • 1...Bc7!
    • 1.Qh2+?
      • 1...Bc7
        • 2.Bxc7#
        • 2.Rxb2#
        • 2.Qxc7#
      • 1...Rxh2+!
    • 1.Qg3+?
      • 1...Bc7
        • 2.Bxc7#
        • 2.Rxb2#
        • 2.Qxc7#
      • 1...hxg3+!
  • Keys
    • 1.Bxb6+!
      • 1...Qxf8
        • 2.c7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(k);N_GUARD::R(H)+B(G),XB(f)
    • R(b);P_SPINB(f)::P(E)
    • B(f);N_GUARD,P_SPINR(b)::P(E)
    • B(f);N_GUARD,P_SPINB(f),P_SPINR(b),XB(G)::QAB(C)
  • Tries
    • Try
      • R(H);XQ(k)
      • Threat
        • R(H)+B(G),XB(f)
      • Vars
        • B(f);N_GUARD,P_SPINB(f),P_SPINR(b),XB(G)::QAB(C)
        • R(b);P_SPINB(f)::P(E)
        • B(f);N_GUARD,P_SPINR(b)::P(E)
      • Refutation
        • B(f);P_SPINR(b)
    • Try
      • Q(C);CHECK
      • Refutation
        • R(b);CHECK,P_SPINB(f),XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(d);CHECK,XQ(C)
  • Actual
    • B(G);CHECK,XB(f)
    • Vars
      • Q(k);XR(H)::P(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).