MESON Chess Problem Database

Problem Display
PID: 6830 (n7/1R2K3/2k5/1R6/1PP5/8/8/8 w - - 0 1)

Keres, Paul P

Wiener Schachzeitung, 1933

n7/1R2K3/2k5/1R6/1PP5/8/8/8

#2

5 + 2

2012 Miniature Chess Problems from Many Countries 1981
3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
9939 64 Shakhmatnoe obozrenie 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.R5xb6#
    • 1...Sc7
      • 2.R5b6#
      • 2.R7b6#
  • Tries
    • 1.Ke6?
      • 1...Sb6
        • 2.R5xb6#
      • 1...Sc7+!
    • 1.Kd8?
      • 1...Sb6
        • 2.R5xb6#
        • 2.R7xb6#
      • 1...Sc7
        • 2.R5b6#
        • 2.R7b6#
      • 1...Kd6!
    • 1.Ra7?
      • 1...Sb6
        • 2.Rc5#
      • 1...Sc7!
  • Keys
    • 1.Rd7!
      • 1...Sb6
        • 2.Rc5#
      • 1...Sc7
        • 2.Rd6#

FEATURES

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