MESON Chess Problem Database

Problem Display
PID: 214907 (8/2pN4/2P1P3/3k1n1R/KB1P3Q/4Pp2/5P2/8 w - - 0 1)

Wheeler, Charles Henry

St. Louis Globe Democrat, 1879

8/2pN4/2P1P3/3k1n1R/KB1P3Q/4Pp2/5P2/8

#2

10 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qe4#
  • Tries
    • 1.Rxf5+?
      • 1...Kxc6
        • 2.Qe4#
      • 1...Kxe6
        • 2.Qf6#
        • 2.Qe4#
      • 1...Kc4!
    • 1.Qh3?
      • 1...Ke4
        • 2.Qxf5#
      • 1...Kxc6
        • 2.Qxf3#
      • 1...Kxe6
        • 2.Qxf5#
      • 1...Kc4!
    • 1.Qe4+?
      • 1...Kc4
        • 2.Se5#
      • 1...Kxe4!
    • 1.Qf4?
      • 1...Kxc6
        • 2.Qxf3#
        • 2.Qe4#
      • 1...Kxe6
        • 2.Qxf5#
      • 1...Kc4!
    • 1.Qg4?
      • 1...Kxc6
        • 2.Qxf3#
        • 2.Qe4#
      • 1...Kxe6
        • 2.Qxf5#
        • 2.Qg8#
      • 1...Kc4!
  • Keys
    • 1.Qd8!
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Sc5#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Kxe6
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINS(c),S_FLIGHT,XP(H)::QAB(F)
  • Tries
    • Try
      • R(G);CHECK,XS(c)
      • Vars
        • K(b);S_FLIGHT,XP(H)::QAB(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);N_SPINS(c),S_FLIGHT::QAB1(F),XS(c)
        • K(b);N_SPINS(c),S_FLIGHT,XP(H)::QAB(F),XP(a)
        • K(b);S_FLIGHT,XP(I)::QAB1(F),XS(c)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);N_SPINS(c),S_FLIGHT::S(J)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT,XQ(F)
    • Try
      • Q(F);
      • Vars
        • K(b);N_SPINS(c),S_FLIGHT,XP(I)::QAB1(F),XS(c)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
    • Try
      • Q(F);
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(b);N_SPINS(c),S_FLIGHT::S(J)
      • K(b);N_SPINS(c),OGATEB,S_FLIGHT,XP(H)::QAB(F)
      • K(b);N_SPINS(c),OGATEB,S_FLIGHT,XP(I)::QAB(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).