MESON Chess Problem Database

Problem Display
PID: 251672 (4Q3/4B3/4P3/p2PkP2/P5p1/3PP1Rb/6p1/6K1 w - - 0 1)

Hoek, Willem

Jerusalem Post, 1961

4Q3/4B3/4P3/p2PkP2/P5p1/3PP1Rb/6p1/6K1

#2

10 + 5

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qb5#
    • 1...Kxf5
      • 2.Qh5#
  • Tries
    • 1.Rxg4?
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxf5
        • 2.Rg5#
        • 2.Qh5#
      • 1...Bxg4!
    • 1.Qb8+?
      • 1...Kxd5
        • 2.Qd6#
        • 2.Qb5#
      • 1...Kxf5!
    • 1.Qc8?
      • 1...Kxd5
        • 2.Qc5#
      • 1...Kxf5!
    • 1.Qg8?
      • 1...Kxf5
        • 2.Qg5#
      • 1...Kxd5!
    • 1.Qh8+?
      • 1...Kxf5
        • 2.Qf6#
        • 2.Qh5#
      • 1...Kxd5!
    • 1.d6?
      • threat
        • 2.Qb5#
      • 1...Kd5
        • 2.Qb5#
      • 1...Kxf5!
    • 1.f6?
      • threat
        • 2.Qh5#
      • 1...Kf5
        • 2.Qh5#
      • 1...Kxd5!
  • Keys
    • 1.e4!
      • 1...Kd4
        • 2.Qh8#
      • 1...Kf4
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(e);OGATEB,P-FLIGHT,XP(F)::QAR2(J)
    • K(e);OGATEB,P-FLIGHT,XP(G)::QAR2(J)
  • Tries
    • Try
      • R(D);XP(c)
      • Vars
        • K(e);OGATEB,P-FLIGHT,XP(F)::QAR2(J)
      • Refutation
        • B(b);XR(D)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(e);P-FLIGHT,XP(G)
    • Try
      • Q(J);
      • Vars
        • K(e);OGATEB,P-FLIGHT,XP(F)::QAR1(J)
      • Refutation
        • K(e);P-FLIGHT,XP(G)
    • Try
      • Q(J);
      • Vars
        • K(e);OGATEB,P-FLIGHT,XP(G)::QAR1(J)
      • Refutation
        • K(e);P-FLIGHT,XP(F)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(e);P-FLIGHT,XP(F)
    • Try
      • P(F);
      • Threat
        • QAR(J)
      • Vars
        • K(e);P-FLIGHT::QAR2(J)
      • Refutation
        • K(e);P-FLIGHT,XP(G)
    • Try
      • P(G);
      • Threat
        • QAR(J)
      • Vars
        • K(e);P-FLIGHT::QAR2(J)
      • Refutation
        • K(e);P-FLIGHT,XP(F)
  • Actual
    • P(C);
    • Vars
      • K(e);N_GUARD,S_FLIGHT::QAB(J)
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