MESON Chess Problem Database

Problem Display
PID: 208891 (6n1/5Rn1/2pkp3/2p1N3/2K5/5P2/8/7Q w - - 0 1)

Wheeler, Charles Henry

Detroit Free Press, 1876

6n1/5Rn1/2pkp3/2p1N3/2K5/5P2/8/7Q

#2

5 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qh2#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qb8#
      • 1...Kxe5
        • 2.Qb8#
      • 1...Se8!
    • 1.Qg1?
      • threat
        • 2.Qxc5#
      • 1...Kxe5
        • 2.Qh2#
        • 2.Qxc5#
        • 2.Qg3#
      • 1...Se7!
    • 1.f4?
      • threat
        • 2.Rd7#
        • 2.Qxc6#
        • 2.Qd1#
      • 1...Sf5
        • 2.Rd7#
        • 2.Qxc6#
      • 1...Sf6
        • 2.Qxc6#
      • 1...Se7!
  • Keys
    • 1.Qh8!
      • 1...Kxe5
        • 2.Qh2#
      • 1...Se7
        • 2.Qb8#
      • 1...Sh6
        • 2.Qb8#
      • 1...Sf5
        • 2.Rd7#
      • 1...Sh5
        • 2.Rd7#
      • 1...Se8
        • 2.Rd7#
      • 1...Sf6
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,S_FLIGHT,XS(D)::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • K(c);S_FLIGHT,XS(D)::QAB(A)
      • Refutation
        • S(e);
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(a)
      • Refutation
        • S(f);
    • Try
      • P(B);
      • Threat
        • DUALS(3)
      • Vars
        • S(f);::QAR1(A),XP(b)
      • Refutation
        • S(f);
  • Actual
    • Q(A);
    • Vars
      • K(c);OGATEB,P_SPINS(e),S_FLIGHT,XS(D)::QAB(A)
      • S(f);OGATE::QAB(A)
      • S(e);::R1(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).