MESON Chess Problem Database

Problem Display
PID: 110256 (8/4Q2R/6kp/8/8/3K1P2/7N/8 w - - 0 1)

Labai, Zoltan

Hlasnik, 1999

8/4Q2R/6kp/8/8/3K1P2/7N/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Ke4?
      • 1...h5
        • 2.Qg7#
      • 1...Kh5!
    • 1.Sg4?
      • 1...Kf5
        • 2.Qf6#
      • 1...Kh5
        • 2.Rxh6#
      • 1...h5!
    • 1.Rxh6+?
      • 1...Kf5
        • 2.Qf6#
      • 1...Kxh6!
    • 1.Rf7?
      • 1...h5
        • 2.Qf6#
      • 1...Kh5!
    • 1.Qg7+?
      • 1...Kh5
        • 2.Rxh6#
        • 2.Qxh6#
        • 2.Qg4#
      • 1...Kf5!
  • Keys
    • 1.f4!
      • threat
        • 2.Qf7#
      • 1...Kf5
        • 2.Qf7#
      • 1...Kh5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(b);::QAR1(D)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
        • K(a);P_SPINP(b),S_FLIGHT::R1(E),XP(b)
      • Refutation
        • P(b);
    • Try
      • R(E);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XR(E)
    • Try
      • R(E);
      • Vars
        • P(b);SBLOCK::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(C);
    • Threat
      • QAB1(D)
    • Vars
      • K(a);S_FLIGHT::QAR2(D)
      • K(a);P_SPINP(b),S_FLIGHT::QAR1(D)
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