MESON Chess Problem Database

Problem Display
PID: 185162 (1n6/8/1B6/Np6/1k6/1P6/1K6/8 w - - 0 1)

Holm, Karl Helmer

Springaren, 1948

1n6/8/1B6/Np6/1k6/1P6/1K6/8

#2

4 + 3

15601 Albrecht-Leiss-Degener Collection 2018
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Sc6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sd7
      • 2.Sc6#
  • Tries
    • 1.Bg1?
      • 1...Sa6
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sd7
        • 2.Sc6#
      • 1...Kxa5!
    • 1.Bf2?
      • 1...Sa6
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sd7
        • 2.Sc6#
      • 1...Kxa5!
    • 1.Be3?
      • 1...Sa6
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sd7
        • 2.Sc6#
      • 1...Kxa5!
    • 1.Bd4?
      • 1...Sa6
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sd7
        • 2.Sc6#
      • 1...Kxa5!
    • 1.Ba7?
      • 1...Sa6
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sd7
        • 2.Sc6#
      • 1...Kxa5!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Ba5#
        • 2.Bc5#
      • 1...Sa6
        • 2.Ba5#
      • 1...Sc6
        • 2.Bc5#
      • 1...Sd7
        • 2.Ba5#

Anticipated by 5983(1926)

This anticipates 121096(1969)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::S(C)
    • S(c);N_GUARD::S(C),XS(c)
  • Tries
    • Try
      • B(D);
      • Vars
        • S(c);N_GUARD::S(C)
        • S(c);N_GUARD::S(C),XS(c)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • B(D);
      • Vars
        • S(c);N_GUARD::S(C)
        • S(c);N_GUARD::S(C),XS(c)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • B(D);
      • Vars
        • S(c);N_GUARD::S(C)
        • S(c);N_GUARD::S(C),XS(c)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • B(D);
      • Vars
        • S(c);N_GUARD::S(C)
        • S(c);N_GUARD::S(C),XS(c)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • B(D);
      • Vars
        • S(c);N_GUARD::S(C)
        • S(c);N_GUARD::S(C),XS(c)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • S(c);::B(D)
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