MESON Chess Problem Database

Problem Display
PID: 182228 (8/8/8/3P1P1N/6k1/5N2/5Q2/3K4 w - - 0 1)

Fonteyn, LA

Munchner Zeitung, 1906

8/8/8/3P1P1N/6k1/5N2/5Q2/3K4

#2

6 + 1

6490 yacpdb 2018
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kh3
      • 2.Qg3#
    • 1...Kxh5
      • 2.Qh4#
  • Tries
    • 1.Kc1?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxh5
        • 2.Qh4#
      • 1...Kxf5!
    • 1.Ke1?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxh5
        • 2.Qh4#
      • 1...Kxf5!
    • 1.Kc2?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxh5
        • 2.Qh4#
      • 1...Kxf5!
    • 1.Kd2?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxh5
        • 2.Qh4#
      • 1...Kxf5!
    • 1.Ke2?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxh5
        • 2.Qh4#
      • 1...Kxf5!
    • 1.Qe3?
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kxh5
        • 2.Qg5#
      • 1...Kh3!
    • 1.Qg3+?
      • 1...Kxh5
        • 2.Qh4#
        • 2.Qh3#
        • 2.Qg5#
        • 2.Qg6#
      • 1...Kxf5!
    • 1.Qf1?
      • 1...Kxh5
        • 2.Qh3#
      • 1...Kxf5!
    • 1.Qg2+?
      • 1...Kxh5
        • 2.Qh3#
        • 2.Qg5#
        • 2.Qg6#
      • 1...Kxf5!
    • 1.Qh2?
      • 1...Kxf3
        • 2.Qe2#
      • 1...Kxf5!
    • 1.d6?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxh5
        • 2.Qh4#
      • 1...Kxf5!
  • Keys
    • 1.Qe1!
      • 1...Kxf3
        • 2.Qe2#
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kxh5
        • 2.Qh4#

This anticipates 249546(1985)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(B)
    • K(a);S_FLIGHT,XS(F)::QAR1(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);S_FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);S_FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);S_FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);S_FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);S_FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(B)
        • K(a);S_FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT,XS(F)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • P(D);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);S_FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
  • Actual
    • Q(B);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
      • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(B)
      • K(a);S_FLIGHT,XS(F)::QAR1(B)
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).