MESON Chess Problem Database

Problem Display
PID: 203503 (8/8/8/8/8/4nQ1K/8/6k1 w - - 0 1)

Schluter, Walter Hermann Karl

Allgemeine Zeitung Chemnitz, 1924

8/8/8/8/8/4nQ1K/8/6k1

#2

2 + 2

3713 Snap 2020
6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qg2#
    • 1...Sf1
      • 2.Qg2#
    • 1...Sc2
      • 2.Qg2#
    • 1...Sg2
      • 2.Qxg2#
    • 1...Sc4
      • 2.Qg2#
    • 1...Sg4
      • 2.Qg2#
    • 1...Sd5
      • 2.Qg2#
    • 1...Sf5
      • 2.Qg2#
  • Tries
    • 1.Qf2+?
      • 1...Kh1
        • 2.Qh2#
      • 1...Kxf2!
    • 1.Qxe3+?
      • 1...Kh1
        • 2.Qc1#
        • 2.Qe1#
      • 1...Kf1!
    • 1.Qg3+?
      • 1...Kh1
        • 2.Qh2#
      • 1...Sg2
        • 2.Qxg2#
      • 1...Kf1!
  • Keys
    • 1.Qe2!
      • 1...Kh1
        • 2.Qh2#
      • 1...Sd1
        • 2.Qe1#
        • 2.Qg2#
      • 1...Sf1
        • 2.Qg2#
      • 1...Sc2
        • 2.Qg2#
      • 1...Sg2
        • 2.Qxg2#
      • 1...Sc4
        • 2.Qe1#
        • 2.Qg2#
      • 1...Sg4
        • 2.Qe1#
        • 2.Qg2#
      • 1...Sd5
        • 2.Qe1#
        • 2.Qg2#
      • 1...Sf5
        • 2.Qe1#
        • 2.Qg2#

This anticipates 227718(1926), 227885(1926), 120861(1967), 216695(1975)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(b);N_GUARD::QAR1(A)
    • S(b);N_GUARD::QAR1(A),XS(b)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK,XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • S(b);N_GUARD,P_SPINS(b)::QAR1(A),XS(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • S(b);N_GUARD::QAR1(A)
      • S(b);N_GUARD::QAR1(A),XS(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).