MESON Chess Problem Database

Problem Display
PID: 108313 (8/4p3/7p/3PK2k/4N3/6Q1/8/8 w - - 0 1)

Froberg, Johan Hilding Laurentius

Canadian Chess Chat, 1981

8/4p3/7p/3PK2k/4N3/6Q1/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e6
      • 2.Sf6#
  • Tries
    • 1.Kd4?
      • 1...e6
        • 2.Sf6#
      • 1...e5+!
    • 1.d6?
      • 1...e6
        • 2.Sf6#
      • 1...exd6+!
  • Keys
    • 1.Sf2!
      • 1...e6
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::S(B)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(c);N_GUARD::S(B)
      • Refutation
        • P(c);CHECK
    • Try
      • P(C);
      • Vars
        • P(c);N_GUARD::S(B)
      • Refutation
        • P(c);CHECK,XP(C)
  • Actual
    • S(B);
    • Vars
      • P(c);::QAB1(A)
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