MESON Chess Problem Database

Problem Display
PID: 241791 (8/RN1kP3/5K2/2R5/2P5/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1929

8/RN1kP3/5K2/2R5/2P5/8/8/8

#2

6 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Sd6#
  • Tries
    • 1.Ke5?
      • threat
        • 2.Sd6#
      • 1...Ke8
        • 2.Sd6#
      • 1...Kxe7!
    • 1.Kf5?
      • 1...Ke8
        • 2.Sd6#
      • 1...Kxe7!
    • 1.Kg5?
      • 1...Ke6
        • 2.e8Q#
      • 1...Ke8
        • 2.Sd6#
      • 1...Kxe7!
    • 1.Kg6?
      • 1...Ke6
        • 2.e8Q#
      • 1...Ke8
        • 2.Sd6#
      • 1...Kxe7!
    • 1.Kg7?
      • 1...Ke6
        • 2.e8Q#
      • 1...Ke8
        • 2.Sd6#
      • 1...Kxe7!
    • 1.Sd8+?
      • 1...Kd6
        • 2.Rd5#
        • 2.Rc6#
      • 1...Ke8!
    • 1.Rc6?
      • 1...Ke8
        • 2.Sd6#
      • 1...Kxc6!
    • 1.Rc7+?
      • 1...Ke8
        • 2.Sd6#
        • 2.Ra8#
      • 1...Kxc7!
  • Keys
    • 1.Sa5+!
      • 1...Kd6
        • 2.Rd5#
        • 2.Rc6#
      • 1...Ke8
        • 2.Rc8#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(E)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • R(D)+S(E)
      • Vars
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);P-FLIGHT,XP(F)
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);P-FLIGHT,XP(F)
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::P=Q
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);P-FLIGHT,XP(F)
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::P=Q
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);P-FLIGHT,XP(F)
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::P=Q
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);P-FLIGHT,XP(F)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XR(B)
  • Actual
    • S(E);CHECK
    • Vars
      • K(a);S_FLIGHT::R(B)
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