MESON Chess Problem Database

Problem Display
PID: 79229 (8/7R/5N2/4kN2/8/1K6/2Q2P2/8 w - - 0 1)

Asov, Aleksei

Hlas l'udu, 1990

8/7R/5N2/4kN2/8/1K6/2Q2P2/8

#2

6 + 1

5454 Near Snap 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Ke6
        • 2.Qe4#
      • 1...Kf4!
    • 1.Sd5?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kxd5!
    • 1.Sh5?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kd5!
    • 1.Sd7+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Ke6
        • 2.Qe4#
      • 1...Kf4!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxf6
        • 2.Qf5#

Anticipated by 76028(1925), 76207(1926), 176153(1953), 176168(1959), 104712(1969)

This anticipates 163136(2013)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • S(E);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);S_FLIGHT,XS(E)::QAR1(A)
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