MESON Chess Problem Database

Problem Display
PID: 241846 (Rn2K3/1Pk5/1R6/2P5/8/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1930

Rn2K3/1Pk5/1R6/2P5/8/8/8/8

#2

5 + 2

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Rc8#
    • 1...Sc6
      • 2.Rc8#
    • 1...Sd7
      • 2.Rc8#
  • Tries
    • 1.Ke7?
      • 1...Sa6
        • 2.Rc8#
      • 1...Sd7
        • 2.Rc8#
      • 1...Sc6+!
    • 1.Rb1?
      • 1...Sa6
        • 2.Rc8#
      • 1...Sc6
        • 2.Rc8#
      • 1...Sd7
        • 2.Rc8#
      • 1...Kc6!
    • 1.Rb2?
      • 1...Sa6
        • 2.Rc8#
      • 1...Sc6
        • 2.Rc8#
      • 1...Sd7
        • 2.Rc8#
      • 1...Kc6!
    • 1.Rb3?
      • 1...Sa6
        • 2.Rc8#
      • 1...Sc6
        • 2.Rc8#
      • 1...Sd7
        • 2.Rc8#
      • 1...Kc6!
    • 1.Rb4?
      • 1...Sa6
        • 2.Rc8#
      • 1...Sc6
        • 2.Rc8#
      • 1...Sd7
        • 2.Rc8#
      • 1...Kc6!
    • 1.Rb5?
      • 1...Sa6
        • 2.Rc8#
      • 1...Sc6
        • 2.Rc8#
      • 1...Sd7
        • 2.Rc8#
      • 1...Kc6!
  • Keys
    • 1.Ra7!
      • 1...Sa6
        • 2.b8Q#
        • 2.b8R#
      • 1...Sc6
        • 2.b8Q#
      • 1...Sd7
        • 2.b8Q#
        • 2.b8R#

This anticipates 259288(1944)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • S(b);OGATE::R1(D)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • S(b);OGATE::R1(D)
      • Refutation
        • S(b);CHECK
    • Try
      • R(B);
      • Vars
        • S(b);OGATE::R1(D)
        • S(b);OGATE,SBLOCK::R1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • S(b);OGATE::R1(D)
        • S(b);OGATE,SBLOCK::R1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • S(b);OGATE::R1(D)
        • S(b);OGATE,SBLOCK::R1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • S(b);OGATE::R1(D)
        • S(b);OGATE,SBLOCK::R1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • S(b);OGATE::R1(D)
        • S(b);OGATE,SBLOCK::R1(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(D);
    • Vars
      • S(b);OGATE::P=Q
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