MESON Chess Problem Database

Problem Display
PID: 15375 (1B6/5P2/4NP2/8/4k2K/8/3Q4/8 w - - 0 1)

Froberg, Johan Hilding Laurentius

Die Schwalbe, 1983

1B6/5P2/4NP2/8/4k2K/8/3Q4/8

#2

6 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Sg5#
  • Tries
    • 1.Kh3?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
    • 1.Kh5?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
    • 1.Sf4?
      • threat
        • 2.Qd3#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kf5!
    • 1.Sc5+?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kf3!
    • 1.Sf8?
      • 1...Kf5
        • 2.Qf4#
      • 1...Kf3!
    • 1.Bh2?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
    • 1.Bg3?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
    • 1.Bf4?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
    • 1.Bd6?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
    • 1.Bc7?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
    • 1.f8Q?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
    • 1.f8B?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
    • 1.f8R?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5!
  • Keys
    • 1.f8S!
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(C)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(E);
    • Vars
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT::QAR1(A)
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