MESON Chess Problem Database

Problem Display
PID: 143089 (8/2Q4n/1p6/8/1q1k2KB/N3p3/1pP3B1/8 w - - 0 1)

Kipping, Cyril Stanley

Magyar Sakkvilag, 1930

8/2Q4n/1p6/8/1q1k2KB/N3p3/1pP3B1/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sb5#
    • 1...Qd2
      • 2.Sb5#
    • 1...Qc3
      • 2.Sb5#
      • 2.Qd6#
    • 1...Qe7
      • 2.Sb5#
    • 1...Qf8
      • 2.Sb5#
    • 1...Qb5
      • 2.Sxb5#
    • 1...Sf6+
      • 2.Bxf6#
    • 1...Sf8
      • 2.Bf6#
    • 1...e2
      • 2.Bf2#
  • Tries
    • 1.c3+?
      • 1...Qxc3
        • 2.Qd6#
      • 1...Kd3+!
  • Keys
    • 1.Qf4+!
      • 1...Kc3
        • 2.Be1#
      • 1...Kc5
        • 2.Be7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(c);N_GUARD::S(C)
    • Q(c);N_GUARD::S(C),XQ(c)
    • S(f);CHECK,N_GUARD::B(E),XS(f)
    • S(f);N_GUARD::B(E)
    • P(b);OGATEB::B(E)
  • Tries
    • Try
      • P(A);CHECK
      • Vars
        • Q(c);SBLOCK,XP(A)::QAR2(F)
      • Refutation
        • K(d);CHECK,P-FLIGHT
  • Actual
    • Q(F);CHECK
    • Vars
      • K(d);P_PINQ(F),S_FLIGHT::B(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).