MESON Chess Problem Database

Problem Display
PID: 241952 (1N6/1P6/8/k7/2P5/1RK5/1P6/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

1N6/1P6/8/k7/2P5/1RK5/1P6/8

#2

6 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Ra3#
  • Tries
    • 1.Sa6?
      • 1...Ka4
        • 2.Ra3#
      • 1...Kxa6!
    • 1.Sd7?
      • threat
        • 2.Ra3#
      • 1...Ka4
        • 2.Ra3#
      • 1...Ka6!
    • 1.Rb6?
      • threat
        • 2.Ra6#
      • 1...Ka4
        • 2.Ra6#
      • 1...Kxb6!
  • Keys
    • 1.Sc6+!
      • 1...Ka4
        • 2.Ra3#
        • 2.Rb4#
      • 1...Ka6
        • 2.b8S#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::R1(B)
  • Tries
    • Try
      • S(F);
      • Vars
        • K(a);P-FLIGHT::R1(B)
      • Refutation
        • K(a);P-FLIGHT,XS(F)
    • Try
      • S(F);
      • Threat
        • R(B)
      • Vars
        • K(a);P-FLIGHT::R1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
  • Actual
    • S(F);CHECK
    • Vars
      • K(a);P-FLIGHT::P=S
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