MESON Chess Problem Database

Problem Display
PID: 198900 (2Q5/8/6K1/4p3/4k3/8/2N2B2/8 w - - 0 1)

Vesz, Tibor

Bekes, 1921

2Q5/8/6K1/4p3/4k3/8/2N2B2/8

#2

4 + 2

5454 Near Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qf5#
  • Tries
    • 1.Se1?
      • threat
        • 2.Qc4#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd5!
    • 1.Sb4?
      • threat
        • 2.Qg4#
        • 2.Qf5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf3!
    • 1.Qh3?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd5!
    • 1.Qd7?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf3!
  • Keys
    • 1.Sd4!
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd5
        • 2.Qc6#
      • 1...exd4
        • 2.Qf5#

Anticipated by 150274(1895)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(D)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR2(D)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);P-FLIGHT::QAR1(D)
      • P(b);XS(A)::QAB1(D)
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