MESON Chess Problem Database

Problem Display
PID: 247915 (8/8/KN6/8/1p6/pk6/2R5/3B4 w - - 0 1)

Blikeng, Bjarne

Thema Danicum, 1979

8/8/KN6/8/1p6/pk6/2R5/3B4

#2

4 + 3

15601 Albrecht-Leiss-Degener Collection 2021
5454 Near Snap 2021
3713 Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • 1...a2
        • 2.Rc1#
      • 1...Ka4!
    • 1.Sd5?
      • 1...Ka4
        • 2.Rc4#
      • 1...a2!
    • 1.Sd7?
      • threat
        • 2.Sc5#
      • 1...Ka4
        • 2.Sc5#
        • 2.Rc4#
      • 1...a2!
    • 1.Sa8?
      • 1...Ka4
        • 2.Rc4#
      • 1...a2!
    • 1.Sc8?
      • 1...Ka4
        • 2.Rc4#
      • 1...a2!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Sc5#
      • 1...Kxa4
        • 2.Rc4#
      • 1...a2
        • 2.Rc3#

Anticipated by 221924(1967)

This anticipates 158422(1986), 174487(1998)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • P(a);SBLOCK::B(A)+R(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);
      • Vars
        • K(b);S_FLIGHT::B(A)+R(B)
      • Refutation
        • P(a);
    • Try
      • S(D);
      • Threat
        • S(D)
      • Refutation
        • P(a);
    • Try
      • S(D);
      • Vars
        • K(b);S_FLIGHT::B(A)+R(B)
      • Refutation
        • P(a);
    • Try
      • S(D);
      • Vars
        • K(b);S_FLIGHT::B(A)+R(B)
      • Refutation
        • P(a);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(b);S_FLIGHT,XS(D)::B(A)+R(B)
      • P(a);SBLOCK::B(A)+R(B),DCHECK
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