MESON Chess Problem Database

Problem Display
PID: 161607 (8/8/8/8/1K6/1N6/ppk5/6Q1 w - - 0 1)

Akulin, J

Kudesnik, 2008

8/8/8/8/1K6/1N6/ppk5/6Q1

#2

3 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qh2+?
      • 1...Kb1
        • 2.Qh7#
      • 1...Kd1
        • 2.Qd2#
      • 1...Kd3!
    • 1.Qg2+?
      • 1...Kb1
        • 2.Qe4#
        • 2.Qg6#
      • 1...Kd1
        • 2.Qd2#
      • 1...Kd3!
  • Keys
    • 1.Qf2+!
      • 1...Kb1
        • 2.Qf5#
      • 1...Kd1
        • 2.Qd2#
      • 1...Kd3
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(A)
        • K(c);S_FLIGHT::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);CHECK
    • Vars
      • K(c);S_FLIGHT::QAB(A)
      • K(c);S_FLIGHT::QAR1(A)
      • K(c);S_FLIGHT::S(B)
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