MESON Chess Problem Database

Problem Display
PID: 132482 (8/8/5p2/5N1R/4pk2/8/8/3QK3 w - - 0 1)

Dowd, Steven B

Meson, 2009

8/8/5p2/5N1R/4pk2/8/8/3QK3

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd6#
  • Tries
    • 1.Kf1?
      • 1...Ke5
        • 2.Qd6#
      • 1...e3!
    • 1.Kf2?
      • 1...Ke5
        • 2.Qd6#
      • 1...e3+!
    • 1.Qd6+?
      • 1...Kf3
        • 2.Qg3#
      • 1...Kg4!
  • Keys
    • 1.Ke2!
      • 1...Kg4
        • 2.Ke3#
      • 1...Ke5
        • 2.Qd6#
      • 1...e3
        • 2.Qd4#

This is a version of 132481

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(b);P-FLIGHT::QAB(A)+K(B)
      • K(b);S_FLIGHT::QAB1(A)
      • P(a);OGATEB::QAR2(A)
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