MESON Chess Problem Database

Problem Display
PID: 77662 (2n1k3/2K2RB1/6P1/8/8/8/8/8 w - - 0 1)

Queck, Rudolf

Zwickauer Zeitung, 1930

2n1k3/2K2RB1/6P1/8/8/8/8/8

#2

4 + 2

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se7
      • 2.Rf8#
  • Tries
    • 1.Rf1?
      • 1...Ke7
        • 2.Re1#
      • 1...Sb6
        • 2.Re1#
      • 1...Sa7
        • 2.Re1#
      • 1...Se7
        • 2.Rf8#
      • 1...Sd6!
    • 1.Rf2?
      • 1...Ke7
        • 2.Re2#
      • 1...Sb6
        • 2.Re2#
      • 1...Sa7
        • 2.Re2#
      • 1...Se7
        • 2.Rf8#
      • 1...Sd6!
    • 1.Rf3?
      • 1...Ke7
        • 2.Re3#
      • 1...Sb6
        • 2.Re3#
      • 1...Sa7
        • 2.Re3#
      • 1...Se7
        • 2.Rf8#
      • 1...Sd6!
    • 1.Rf4?
      • 1...Ke7
        • 2.Re4#
      • 1...Sb6
        • 2.Re4#
      • 1...Sa7
        • 2.Re4#
      • 1...Se7
        • 2.Rf8#
      • 1...Sd6!
    • 1.Rf6?
      • 1...Sd6
        • 2.Re6#
      • 1...Sb6
        • 2.Re6#
      • 1...Sa7
        • 2.Re6#
      • 1...Se7
        • 2.Rf8#
      • 1...Ke7!
  • Keys
    • 1.Rf5!
      • 1...Ke7
        • 2.Re5#
      • 1...Sd6
        • 2.Re5#
      • 1...Sb6
        • 2.Re5#
      • 1...Sa7
        • 2.Re5#
      • 1...Se7
        • 2.Rf8#

Anticipated by 110025(1929-1931)

This anticipates 15422(1983)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::R1(C)
  • Tries
    • Try
      • R(C);
      • Vars
        • K(b);P-FLIGHT::R(C)
        • S(a);N_GUARD::R(C)
        • S(a);SBLOCK::R1(C)
      • Refutation
        • S(a);
    • Try
      • R(C);
      • Vars
        • K(b);P-FLIGHT::R(C)
        • S(a);N_GUARD::R(C)
        • S(a);SBLOCK::R1(C)
      • Refutation
        • S(a);
    • Try
      • R(C);
      • Vars
        • K(b);P-FLIGHT::R(C)
        • S(a);N_GUARD::R(C)
        • S(a);SBLOCK::R1(C)
      • Refutation
        • S(a);
    • Try
      • R(C);
      • Vars
        • K(b);P-FLIGHT::R(C)
        • S(a);N_GUARD::R(C)
        • S(a);SBLOCK::R1(C)
      • Refutation
        • S(a);
    • Try
      • R(C);
      • Vars
        • S(a);N_GUARD::R(C)
        • S(a);SBLOCK::R1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(b);P-FLIGHT::R(C)
      • S(a);N_GUARD::R(C)
      • S(a);SBLOCK::R1(C)
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