MESON Chess Problem Database

Problem Display
PID: 231107 (K7/1R6/kpn5/8/1PP5/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1927

K7/1R6/kpn5/8/1PP5/8/8/8

#2

4 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb4
      • 2.Ra7#
    • 1...Sd4
      • 2.Ra7#
    • 1...Sa5
      • 2.Ra7#
      • 2.b5#
    • 1...Se5
      • 2.Ra7#
    • 1...Sa7
      • 2.Rxa7#
    • 1...Se7
      • 2.Ra7#
    • 1...Sb8
      • 2.Ra7#
    • 1...Sd8
      • 2.Ra7#
    • 1...b5
      • 2.cxb5#
  • Tries
    • 1.Rd7?
      • 1...Sxb4
        • 2.Ra7#
      • 1...Sd4
        • 2.Ra7#
      • 1...Sa5
        • 2.Ra7#
        • 2.b5#
      • 1...Se5
        • 2.Ra7#
      • 1...Sa7
        • 2.Rxa7#
      • 1...Se7
        • 2.Ra7#
      • 1...Sb8
        • 2.Ra7#
      • 1...Sd8
        • 2.Ra7#
      • 1...b5!
  • Keys
    • 1.Rc7!
      • 1...Sxb4
        • 2.Ra7#
      • 1...b5
        • 2.Rxc6#
      • 1...Sd4
        • 2.Ra7#
      • 1...Sa5
        • 2.Ra7#
        • 2.b5#
      • 1...Se5
        • 2.Ra7#
      • 1...Sa7
        • 2.Rxa7#
      • 1...Se7
        • 2.Ra7#
      • 1...Sb8
        • 2.Ra7#
      • 1...Sd8
        • 2.Ra7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,XP(A)::R1(C)
    • S(c);N_GUARD::R1(C)
    • S(c);N_GUARD::R1(C),XS(c)
    • P(b);OGATE::P(B),XP(b)
  • Tries
    • Try
      • R(C);
      • Vars
        • S(c);N_GUARD,XP(A)::R1(C)
        • S(c);N_GUARD::R1(C)
        • S(c);N_GUARD::R1(C),XS(c)
      • Refutation
        • P(b);
  • Actual
    • R(C);
    • Vars
      • S(c);N_GUARD,XP(A)::R1(C)
      • P(b);OGATEB::R(C),XS(c)
      • S(c);N_GUARD::R1(C)
      • S(c);N_GUARD::R1(C),XS(c)
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