MESON Chess Problem Database

Problem Display
PID: 279745 (8/8/8/3p3q/5Q1p/7k/8/4N2K w - - 0 1)

Zimmer, Eligiusz

Uralski Problemist, 2001

8/8/8/3p3q/5Q1p/7k/8/4N2K

#2

3 + 4

5454 Near Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3+
      • 2.Qxf3#
    • 1...Qg4
      • 2.Qh2#
    • 1...Qe8
      • 2.Qf3#
    • 1...Qh6
      • 2.Qf3#
    • 1...Qh7
      • 2.Qf3#
    • 1...Qh8
      • 2.Qf3#
  • Tries
    • 1.Qe3+?
      • 1...Qf3+
        • 2.Qxf3#
      • 1...Kg4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sg1#
      • 1...Qxf3+
        • 2.Qxf3#
      • 1...Qg4
        • 2.Qh2#
      • 1...Qg6
        • 2.Qxh4#
      • 1...Qg5
        • 2.Sxg5#

Anticipated by 23023(1998)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(d);CHECK,N_GUARD::QAR2(C),XQ(d)
    • Q(d);SBLOCK::QAR1(C)
    • Q(d);N_GUARD::QAR2(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • Q(d);CHECK,N_GUARD,P_SPINQ(d)::QAR2(C),XQ(d)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • Q(d);CHECK,OGATE,XS(A)::QAR2(C),XQ(d)
      • Q(d);SBLOCK::QAR1(C)
      • Q(d);N_GUARD::QAR1(C),XP(b)
      • Q(d);N_GUARD::S(A),XQ(d)
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