MESON Chess Problem Database

Problem Display
PID: 193658 (6K1/8/P2p4/3k4/1P3P2/P7/4P3/1Q6 w - - 0 1)

Wastl, Rudolf

Pesti Naplo, 1915

6K1/8/P2p4/3k4/1P3P2/P7/4P3/1Q6

#2

7 + 2

5454 Near Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qd3#
    • 1...Kd4
      • 2.Qd3#
  • Tries
    • 1.Kf7?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Qc2?
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke6!
    • 1.Qf5+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Qg6?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kc6!
  • Keys
    • 1.Qh7!
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qf7#

Anticipated by 31378(1883)

This anticipates 206705(1925), 106765(1955), 105390(1991), 99408(1995), 199902(2017), 217416(2020)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
    • K(a);P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::QAR1(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).