MESON Chess Problem Database

Problem Display
PID: 217750 (8/8/8/8/8/Q4K2/3P4/5Nk1 w - - 0 1)

Massmann, Wilhelm Karl Heinrich

Deutsche Schachzeitung, 1974

8/8/8/8/8/Q4K2/3P4/5Nk1

#2

4 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf1
      • 2.Qc1#
      • 2.Qa1#
  • Tries
    • 1.Qb2?
      • 1...Kxf1
        • 2.Qa1#
        • 2.Qc1#
        • 2.Qb1#
      • 1...Kh1!
    • 1.Qb4?
      • 1...Kxf1
        • 2.Qb1#
      • 1...Kh1!
    • 1.Qc5+?
      • 1...Kxf1
        • 2.Qf2#
        • 2.Qc1#
      • 1...Kh1!
    • 1.Qd6?
      • 1...Kh1
        • 2.Qh2#
      • 1...Kxf1!
    • 1.Qa2?
      • 1...Kxf1
        • 2.Qb1#
        • 2.Qa1#
      • 1...Kh1!
    • 1.Qb3?
      • 1...Kxf1
        • 2.Qd1#
        • 2.Qb1#
      • 1...Kh1!
    • 1.Qc3?
      • 1...Kxf1
        • 2.Qa1#
        • 2.Qc1#
      • 1...Kh1!
    • 1.Qe3+?
      • 1...Kxf1
        • 2.Qf2#
      • 1...Kh1!
    • 1.Qa4?
      • 1...Kxf1
        • 2.Qd1#
        • 2.Qa1#
      • 1...Kh1!
    • 1.Qa5?
      • 1...Kxf1
        • 2.Qa1#
      • 1...Kh1!
    • 1.Qa7+?
      • 1...Kxf1
        • 2.Qf2#
        • 2.Qa1#
      • 1...Kh1!
    • 1.d3?
      • 1...Kxf1
        • 2.Qc1#
        • 2.Qa1#
      • 1...Kh1!
    • 1.d4?
      • 1...Kxf1
        • 2.Qc1#
        • 2.Qa1#
      • 1...Kh1!
  • Keys
    • 1.Qa8!
      • 1...Kxf1
        • 2.Qa1#
      • 1...Kh1
        • 2.Kf2#

FEATURES

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