MESON Chess Problem Database

Problem Display
PID: 273573 (8/Q7/4R1K1/2Nkp3/5P2/5N2/2P3P1/8 w - - 0 1)

Frei-Schuler, Gottlieb

Die Tat, 1944

(First published on Sat Feb 12 1944)

8/Q7/4R1K1/2Nkp3/5P2/5N2/2P3P1/8

#2

8 + 2

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke4
        • 2.Rxe5#
        • 2.Qd4#
      • 1...exf4
        • 2.Qa2#
      • 1...e4
        • 2.Qa2#
      • 1...Kxe6!
    • 1.Sb7?
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke4
        • 2.Qd4#
      • 1...exf4
        • 2.Qa2#
      • 1...e4
        • 2.Qa2#
      • 1...Kxe6!
    • 1.Sd7?
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke4
        • 2.Qd4#
      • 1...exf4
        • 2.Qa2#
      • 1...e4
        • 2.Qa2#
      • 1...Kxe6!
    • 1.Qa4?
      • 1...exf4
        • 2.Qd4#
      • 1...e4
        • 2.Qd4#
      • 1...Kxc5!
    • 1.Qa6?
      • threat
        • 2.Rxe5#
      • 1...exf4
        • 2.Re5#
      • 1...e4
        • 2.Re5#
      • 1...Kxc5!
  • Keys
    • 1.Se4!
      • 1...Kc4
        • 2.Qc5#
      • 1...Kxe4
        • 2.Qd4#
      • 1...Kxe6
        • 2.Qf7#
      • 1...exf4
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(H)
        • P(b);XP(D)::QAB(H)
        • P(b);::QAB(H)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(H)
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::QAR1(H)
        • P(b);XP(D)::QAB(H)
        • P(b);::QAB(H)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(H)
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::QAR1(H)
        • P(b);XP(D)::QAB(H)
        • P(b);::QAB(H)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • Q(H);
      • Vars
        • P(b);N_GUARD,XP(D)::QAR1(H)
        • P(b);N_GUARD::QAR1(H)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • Q(H);
      • Threat
        • R1(F),XP(b)
      • Vars
        • P(b);XP(D)::R1(F)
        • P(b);::R1(F)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
  • Actual
    • S(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAR1(H)
      • K(a);N_GUARD,P_SPINP(b),S_FLIGHT,XS(E)::QAR1(H)
      • K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(H)
      • P(b);XP(D)::QAB(H)
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).