MESON Chess Problem Database

Problem Display
PID: 17177 (8/4R3/4N3/1K2k3/8/8/6Q1/8 w - - 0 1)

Schonberger, Tibor

Chemnitzer Wochenschach (Allgemeine Zeitung Chemnitz), 1925

8/4R3/4N3/1K2k3/8/8/6Q1/8

#2

4 + 1

3295 Einfuhrung in die Welt des Schachproblem 1984
3713 Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qg5#
  • Tries
    • 1.Kc5?
      • 1...Kf6
        • 2.Qg5#
      • 1...Kf5!
    • 1.Kc6?
      • 1...Kf6
        • 2.Qg5#
      • 1...Kf5!
    • 1.Sg7+?
      • 1...Kd4
        • 2.Qd2#
      • 1...Kf4
        • 2.Re4#
      • 1...Kd6
        • 2.Sf5#
      • 1...Kf6!
    • 1.Qd5+?
      • 1...Kf6
        • 2.Qg5#
      • 1...Kxd5!
    • 1.Qf2?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kd6
        • 2.Qc5#
      • 1...Ke4!
    • 1.Qg4?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kf6
        • 2.Qg5#
      • 1...Kd6!
    • 1.Qg5+?
      • 1...Kd6
        • 2.Qc5#
      • 1...Ke4!
  • Keys
    • 1.Sd4+!
      • 1...Kxd4
        • 2.Qd2#
      • 1...Kf4
        • 2.Re4#
      • 1...Kd6
        • 2.Sf5#
      • 1...Kf6
        • 2.Qg7#

Anticipated by 121005(0000)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
        • K(a);OGATE,S_FLIGHT::R1(D)
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(C);CHECK
    • Vars
      • K(a);S_FLIGHT,XS(C)::QAR2(A)
      • K(a);OGATE,S_FLIGHT::R1(D)
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT::QAB1(A)
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