MESON Chess Problem Database

Problem Display
PID: 224733 (8/3K4/6N1/2pk4/R1q5/n7/Q3P3/8 w - - 0 1)

Schett, Sophie

Wiener Hausfrauen-Zeitung, 1888

8/3K4/6N1/2pk4/R1q5/n7/Q3P3/8

#2

5 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa2
      • 2.e4#
    • 1...Qb3
      • 2.e4#
    • 1...Sb1
      • 2.Qxc4#
    • 1...Sc2
      • 2.Qxc4#
    • 1...Sb5
      • 2.Qxc4#
  • Tries
    • 1.Qd2+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Qd3
        • 2.Qxd3#
        • 2.e4#
      • 1...Qd4!
    • 1.e3?
      • 1...Qxa2
        • 2.e4#
      • 1...Qb3
        • 2.Qg2#
        • 2.e4#
      • 1...Sb1
        • 2.Qxc4#
      • 1...Sc2
        • 2.Qxc4#
      • 1...Sb5
        • 2.Qxc4#
      • 1...Ke4!
  • Keys
    • 1.Qb3!
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke4
        • 2.Qd3#
      • 1...Qxb3
        • 2.e4#
      • 1...Sb1
        • 2.Qxc4#
      • 1...Sc2
        • 2.Qxc4#
      • 1...Sb5
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_SPINQ(b),XQ(A)::P(B)
    • Q(b);::P(B)
    • S(a);N_GUARD::QAB1(A),XQ(b)
  • Tries
    • Try
      • Q(A);CHECK,N_PINQ(b)
      • Vars
        • K(d);P_SPINQ(b),S_FLIGHT::QAB1(A)
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • P(B);
      • Vars
        • Q(b);N_SPINQ(b),XQ(A)::P(B)
        • S(a);N_GUARD::QAB1(A),XQ(b)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(d);P-FLIGHT::QAR1(A)
      • K(d);S_FLIGHT::QAB1(A)
      • Q(b);N_SPINQ(b),XQ(A)::P(B)
      • S(a);N_GUARD::QAB1(A),XQ(b)
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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).