MESON Chess Problem Database

Problem Display
PID: 208013 (8/1p6/1K1N2Q1/4k3/4N3/8/5P2/8 w - - 0 1)

Meredith, William

Dubuque Chess Journal, 1873

8/1p6/1K1N2Q1/4k3/4N3/8/5P2/8

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qf5#
      • 2.Qg3#
  • Tries
    • 1.Kc5?
      • threat
        • 2.Qf5#
        • 2.Qf6#
      • 1...Kf4
        • 2.Qf5#
        • 2.Qg3#
      • 1...b6+!
    • 1.Sc3?
      • 1...Kf4
        • 2.Qf5#
        • 2.Qg3#
      • 1...Kd4!
    • 1.Qg8?
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd4!
  • Keys
    • 1.Qf6+!
      • 1...Kd5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);CHECK
    • Try
      • S(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);CHECK
    • Vars
      • K(a);P-FLIGHT::S(B)
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