MESON Chess Problem Database

Problem Display
PID: 166393 (8/8/8/6pQ/3K1kp1/8/4P3/4N3 w - - 0 1)

Zimmer, Eligiusz

Best Problems, 2017

8/8/8/6pQ/3K1kp1/8/4P3/4N3

#2

4 + 3

5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qf7#
    • 1...g3
      • 2.Qf3#
  • Tries
    • 1.Sc2?
      • 1...Kf5
        • 2.Qf7#
      • 1...g3
        • 2.Qf3#
      • 1...Kg3!
    • 1.Sg2+?
      • 1...Kf5
        • 2.Qf7#
      • 1...Kg3!
    • 1.Sd3+?
      • 1...Kf5
        • 2.Qf7#
      • 1...Kg3!
    • 1.Qg6?
      • 1...g3
        • 2.Qe4#
      • 1...Kg3!
    • 1.Qe8?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qf7#
      • 1...g3
        • 2.Qe4#
      • 1...Kg3!
    • 1.Qh7?
      • 1...g3
        • 2.Qe4#
      • 1...Kg3!
    • 1.e3+?
      • 1...Kf5
        • 2.Qf7#
      • 1...Kg3!
    • 1.e4?
      • 1...g3
        • 2.Sg2#
        • 2.Sd3#
        • 2.Qf3#
      • 1...Kg3!
  • Keys
    • 1.Sf3!
      • 1...Kg3
        • 2.Qh2#
      • 1...Kf5
        • 2.Qf7#
      • 1...gxf3
        • 2.Qxf3#
      • 1...g3
        • 2.Qxg5#

Anticipated by 201744(2016)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINP(c)::QAR2(D)
    • P(b);OGATE::QAR1(D)
  • Tries
    • Try
      • S(A);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR2(D)
        • P(b);OGATE::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(b);SBLOCK::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
        • P(b);SBLOCK::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(b);SBLOCK::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(B);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(B);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);P-FLIGHT,P_SPINP(c)::QAR2(D)
      • P(b);OGATE,XS(A)::QAR1(D),XP(b)
      • P(b);::QAB1(D),XP(c)
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