MESON Chess Problem Database

Problem Display
PID: 21569 (k7/5R2/nK6/8/8/8/8/8 w - - 0 1)

Dehler, Otto Georg Edgar

Neue Welt, 1919

k7/5R2/nK6/8/8/8/8/8

#2

2 + 2

3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kb8
      • 2.Rf8#
    • 1...Sb4
      • 2.Rf8#
    • 1...Sc5
      • 2.Rf8#
    • 1...Sb8
      • 2.Ra7#
  • Tries
    • 1.Re7?
      • 1...Kb8
        • 2.Re8#
      • 1...Sb4
        • 2.Re8#
      • 1...Sc5
        • 2.Re8#
      • 1...Sb8
        • 2.Ra7#
      • 1...Sc7!
    • 1.Rg7?
      • 1...Kb8
        • 2.Rg8#
      • 1...Sb4
        • 2.Rg8#
      • 1...Sc5
        • 2.Rg8#
      • 1...Sb8
        • 2.Ra7#
      • 1...Sc7!
    • 1.Rh7?
      • 1...Kb8
        • 2.Rh8#
      • 1...Sb4
        • 2.Rh8#
      • 1...Sc5
        • 2.Rh8#
      • 1...Sb8
        • 2.Ra7#
      • 1...Sc7!
  • Keys
    • 1.Rd7!
      • 1...Kb8
        • 2.Rd8#
      • 1...Sc7
        • 2.Rd8#
      • 1...Sb4
        • 2.Rd8#
      • 1...Sc5
        • 2.Rd8#
      • 1...Sb8
        • 2.Ra7#

This anticipates 137402(1929), 249395(1975)

This is a version of 21570

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::R(B)
    • S(a);N_GUARD::R(B)
    • S(a);SBLOCK::R1(B)
  • Tries
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::R(B)
        • S(a);N_GUARD::R(B)
        • S(a);SBLOCK::R1(B)
      • Refutation
        • S(a);
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::R(B)
        • S(a);N_GUARD::R(B)
        • S(a);SBLOCK::R1(B)
      • Refutation
        • S(a);
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::R(B)
        • S(a);N_GUARD::R(B)
        • S(a);SBLOCK::R1(B)
      • Refutation
        • S(a);
  • Actual
    • R(B);
    • Vars
      • K(b);P-FLIGHT::R(B)
      • S(a);N_GUARD::R(B)
      • S(a);SBLOCK::R1(B)
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Developed and maintained by Brian Stephenson.
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