MESON Chess Problem Database

Problem Display
PID: 157242 (1R6/1n6/2N5/8/k1P5/p7/K7/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1925

1R6/1n6/2N5/8/k1P5/p7/K7/8

#2

4 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sa5
      • 2.Rb4#
    • 1...Sc5
      • 2.Rb4#
    • 1...Sd6
      • 2.Rb4#
      • 2.Ra8#
    • 1...Sd8
      • 2.Rb4#
      • 2.Ra8#
  • Tries
    • 1.c5?
      • 1...Sxc5
        • 2.Rb4#
      • 1...Sa5
        • 2.Rb4#
      • 1...Sd6
        • 2.Rb4#
      • 1...Sd8
        • 2.Rb4#
      • 1...Kb5!
  • Keys
    • 1.Ra8+!
      • 1...Sa5
        • 2.Rxa5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(c);OGATE::R1(D)
  • Tries
    • Try
      • P(B);
      • Vars
        • S(c);OGATE,XP(B)::R1(D)
        • S(c);OGATE::R1(D)
      • Refutation
        • K(b);P_SPINS(c),S_FLIGHT
  • Actual
    • R(D);CHECK
    • Vars
      • S(c);N_GUARD,P_SPINS(c)::R1(D),XS(c)
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