MESON Chess Problem Database

Problem Display
PID: 252938 (1K6/2p2P2/2k1NQ2/2P5/2P5/8/8/8 w - - 0 1)

Sommer, Bruno Oswald

Die Schwalbe, 1930

1K6/2p2P2/2k1NQ2/2P5/2P5/8/8/8

#2

6 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Sf8#
  • Tries
    • 1.Sd4+?
      • 1...Kd7
        • 2.c6#
      • 1...Kxc5!
    • 1.Sf4+?
      • 1...Kd7
        • 2.c6#
      • 1...Kxc5!
    • 1.Sg5+?
      • 1...Kd7
        • 2.c6#
      • 1...Kxc5!
    • 1.Sxc7+?
      • 1...Kd7
        • 2.Qd6#
        • 2.c6#
        • 2.f8S#
      • 1...Kxc5!
    • 1.Sg7+?
      • 1...Kd7
        • 2.c6#
        • 2.f8S#
      • 1...Kxc5!
    • 1.Sd8+?
      • 1...Kd7
        • 2.c6#
      • 1...Kxc5!
  • Keys
    • 1.Qh8!
      • 1...Kd7
        • 2.Qe8#

FEATURES

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