MESON Chess Problem Database

Problem Display
PID: 193920 (8/2p5/4B3/2k5/3N1P2/8/1Q2K3/8 w - - 0 1)

Lauritzen, Oskar Georg

Illustrated Family Journal, 1916

8/2p5/4B3/2k5/3N1P2/8/1Q2K3/8

#2

5 + 2

5454 Near Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3+?
      • 1...Kxd4
        • 2.Qb4#
        • 2.Qe3#
      • 1...Kb6!
    • 1.Qb5+?
      • 1...Kxd4
        • 2.Qc4#
        • 2.Qb4#
        • 2.Qe5#
      • 1...Kd6!
  • Keys
    • 1.Qb8!
      • 1...Kxd4
        • 2.Qb4#
      • 1...Kd6
        • 2.Qf8#
      • 1...c6
        • 2.Sb3#

Anticipated by 5141(1900), 181855(1905), 187765(1909)

This anticipates 21242(1917), 28734(1923)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT,XS(C)::QAR2(A)
      • K(a);P_SPINP(b),S_FLIGHT::QAB(A)
      • P(b);SBLOCK::S(C)
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