MESON Chess Problem Database

Problem Display
PID: 224732 (K7/3p4/1P1N4/1Pk5/2B2P2/8/1P6/3Q4 w - - 0 1)

Decker, Adolfph L

Wilkes-Barre Record, 1888

K7/3p4/1P1N4/1Pk5/2B2P2/8/1P6/3Q4

#2

8 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sb7+?
      • 1...Kb4
        • 2.Qb3#
      • 1...Kxb6
        • 2.Qd6#
      • 1...Kxc4!
    • 1.Qf3?
      • 1...Kb4
        • 2.Qa3#
      • 1...Kd4
        • 2.Qf2#
      • 1...Kxd6
        • 2.Qa3#
      • 1...Kxb6!
    • 1.Qa4?
      • 1...Kxb6
        • 2.Qa7#
      • 1...Kxd6
        • 2.Qa3#
        • 2.Qb4#
      • 1...Kd4!
    • 1.Qe1?
      • 1...Kd4
        • 2.Qf2#
        • 2.Qg1#
        • 2.Qe5#
      • 1...Kxd6
        • 2.Qb4#
        • 2.Qe5#
      • 1...Kxb6!
    • 1.Qd3?
      • 1...Kb4
        • 2.Qa3#
      • 1...Kxb6!
  • Keys
    • 1.Qa1!
      • 1...Kb4
        • 2.Qa3#
      • 1...Kd4
        • 2.Qg1#
      • 1...Kxb6
        • 2.Qa7#
      • 1...Kxd6
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);S_FLIGHT,XP(F)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAB(A)
        • K(a);S_FLIGHT,XS(G)::QAB(A)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(A)
      • K(a);S_FLIGHT,XS(G)::QAB(A)
HTML5 logo

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).