MESON Chess Problem Database

Problem Display
PID: 241866 (4R1n1/4b3/2KPk3/8/5Q2/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1931

4R1n1/4b3/2KPk3/8/5Q2/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Rxe7#
    • 1...Sh6
      • 2.Rxe7#
  • Tries
    • 1.Kc5?
      • 1...Sf6
        • 2.Rxe7#
      • 1...Sh6
        • 2.Rxe7#
      • 1...Kd7!
    • 1.Qg5?
      • 1...Sf6
        • 2.Rxe7#
      • 1...Sh6
        • 2.Rxe7#
      • 1...Kf7!
    • 1.Qf1?
      • 1...Sf6
        • 2.Rxe7#
      • 1...Sh6
        • 2.Rxe7#
      • 1...Ke5!
    • 1.Qf2?
      • 1...Sf6
        • 2.Rxe7#
      • 1...Sh6
        • 2.Rxe7#
      • 1...Ke5!
    • 1.Qf3?
      • 1...Sf6
        • 2.Rxe7#
      • 1...Sh6
        • 2.Rxe7#
      • 1...Ke5!
  • Keys
    • 1.d7!
      • threat
        • 2.d8S#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • S(c);N_GUARD::R1(D),XB(b)
  • Tries
    • Try
      • K(B);P-FLIGHT,P_SPINP(C)
      • Vars
        • S(c);N_GUARD::R1(D),XB(b)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(c);N_GUARD::R1(D),XB(b)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(c);N_GUARD::R1(D),XB(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(c);N_GUARD::R1(D),XB(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(c);N_GUARD::R1(D),XB(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(C);
    • Threat
      • P=S
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