MESON Chess Problem Database

Problem Display
PID: 223479 (5K2/5Q2/8/6kp/7N/8/7P/8 w - - 0 1)

Henning, Hans

Funkschach, 1926

5K2/5Q2/8/6kp/7N/8/7P/8

#2

4 + 2

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Qg6#
      • 2.Qg7#
  • Tries
    • 1.Sf3+?
      • 1...Kh6
        • 2.Qg7#
      • 1...Kg4!
    • 1.Qg6+?
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kf4!
    • 1.Qf2?
      • 1...Kg4
        • 2.Qg3#
      • 1...Kh6!
    • 1.Qf3?
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kh6!
    • 1.Qf5+?
      • 1...Kh6
        • 2.Qg6#
      • 1...Kxh4!
    • 1.Qg7+?
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kf4!
    • 1.h3?
      • 1...Kh6
        • 2.Qg6#
        • 2.Qg7#
      • 1...Kxh4!
  • Keys
    • 1.Qc7!
      • 1...Kg4
        • 2.Qg3#
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qg7#

Anticipated by 2710(0000), 201694(1922)

This anticipates 45874(1967), 79544(1970), 24218(1980)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(A);
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);S_FLIGHT,XS(B)::QAB1(C)
      • K(a);S_FLIGHT::QAB1(C)
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