MESON Chess Problem Database

Problem Display
PID: 93184 (Q7/Np6/8/K2k1P2/6P1/4B3/2PP1P2/8 w - - 0 1)

Balslev, Ole

Skakbladet, 1968

Q7/Np6/8/K2k1P2/6P1/4B3/2PP1P2/8

#2

9 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qg8#
  • Tries
    • 1.Qd8+?
      • 1...Kc4
        • 2.Qd3#
        • 2.Qd4#
        • 2.Qg8#
      • 1...Ke5
        • 2.Qd4#
      • 1...Ke4!
    • 1.d4?
      • 1...Ke4
        • 2.Qxb7#
      • 1...Kd6
        • 2.Qd8#
      • 1...Kc4!
  • Keys
    • 1.f4!
      • 1...Kc4
        • 2.Qg8#
      • 1...Ke4
        • 2.Qxb7#
      • 1...Kd6
        • 2.Qd8#

FEATURES

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