MESON Chess Problem Database

Problem Display
PID: 262778 (6Q1/3p4/3K4/5k2/6N1/8/6N1/8 w - - 0 1)

Gebura, Stanislaw

Szachy, 1983

6Q1/3p4/3K4/5k2/6N1/8/6N1/8

#2

4 + 2

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qd5#
  • Tries
    • 1.Sh4+?
      • 1...Ke4
        • 2.Qc4#
      • 1...Kf4!
    • 1.Sh2?
      • 1...Ke4
        • 2.Qd5#
      • 1...Kf6!
    • 1.S4e3+?
      • 1...Ke4
        • 2.Qd5#
      • 1...Kf6!
    • 1.Sh6+?
      • 1...Ke4
        • 2.Qd5#
      • 1...Kf6!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Qd5#
      • 1...Kxg5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qg6#
      • 1...Ke4
        • 2.Qg4#
      • 1...Kf6
        • 2.Qg6#

FEATURES

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