MESON Chess Problem Database

Problem Display
PID: 22047 (8/8/2p5/8/8/K6n/2B5/k5bQ w - - 0 1)

Larsen, Karl Adolf Koefoed

Sydsvenska Dagbladet Snallposten, 1923

8/8/2p5/8/8/K6n/2B5/k5bQ

#2

3 + 4

3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qh8#
    • 1...Sf4
      • 2.Qxg1#
    • 1...Sg5
      • 2.Qxg1#
  • Tries
    • 1.Bd3?
      • 1...Sf2
        • 2.Qh8#
      • 1...Sf4
        • 2.Qxg1#
      • 1...Sg5
        • 2.Qxg1#
      • 1...c5!
    • 1.Be4?
      • 1...Sf2
        • 2.Qh8#
      • 1...Sf4
        • 2.Qxg1#
      • 1...Sg5
        • 2.Qxg1#
      • 1...c5!
    • 1.Bf5?
      • 1...Sf2
        • 2.Qh8#
      • 1...Sf4
        • 2.Qxg1#
      • 1...Sg5
        • 2.Qxg1#
      • 1...c5!
    • 1.Bg6?
      • 1...Sf2
        • 2.Qh8#
      • 1...Sf4
        • 2.Qxg1#
      • 1...Sg5
        • 2.Qxg1#
      • 1...c5!
  • Keys
    • 1.Kb3!
      • 1...Sf2
        • 2.Qh8#
      • 1...Sf4
        • 2.Qxg1#
      • 1...Sg5
        • 2.Qxg1#
      • 1...c5
        • 2.Qa8#

This anticipates 22054(1924), 203312(1924), 81448(1929), 71670(1931), 79539(1947), 150450(1948)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::QAB(A)
    • S(c);N_GUARD::QAR(A),XB(b)
  • Tries
    • Try
      • B(B);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(b)
      • Refutation
        • P(d);
    • Try
      • B(B);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(b)
      • Refutation
        • P(d);
    • Try
      • B(B);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(b)
      • Refutation
        • P(d);
    • Try
      • B(B);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(b)
      • Refutation
        • P(d);
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • S(c);OGATE::QAB(A)
      • S(c);N_GUARD::QAR(A),XB(b)
      • P(d);OGATE::QAB(A)
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