MESON Chess Problem Database

Problem Display
PID: 245292 (5N2/5N2/5p2/7p/6k1/Q7/8/4K3 w - - 0 1)

Onkoud, Abdelaziz

Buletin Problemistic, 1996

5N2/5N2/5p2/7p/6k1/Q7/8/4K3

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qf3#
  • Tries
    • 1.Qf3+?
      • 1...Kh4
        • 2.Sg6#
      • 1...Kxf3!
    • 1.Qg3+?
      • 1...Kf5
        • 2.Sd6#
        • 2.Qf3#
      • 1...Kxg3!
  • Keys
    • 1.Kf2!
      • 1...Kf4
        • 2.Qf3#
      • 1...Kh4
        • 2.Qg3#
      • 1...Kf5
        • 2.Qf3#
      • 1...h4
        • 2.Qf3#
      • 1...f5
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);P-FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR2(B)
      • P(b);SBLOCK::QAB1(B)
      • P(c);SBLOCK::QAR1(B)
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