MESON Chess Problem Database

Problem Display
PID: 142076 (6B1/1p2b1p1/1Bk1N2R/8/r1N5/P1Q5/p7/K7 w - - 0 1)

Roschlaub, H

1st Prize, Oberfrankische Schachzeitung, 1931

6B1/1p2b1p1/1Bk1N2R/8/r1N5/P1Q5/p7/K7

#2

8 + 6

14868 Pirnie Collection 2011
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kb5
      • 2.Sc7#
    • 1...Kd5
      • 2.Sc5#
      • 2.Sg5#
  • Tries
    • 1.Se5+?
      • 1...Kb5
        • 2.Sc7#
      • 1...Kd5
        • 2.Sc5#
        • 2.Sg5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kxb6!
    • 1.Qf3+?
      • 1...Kb5
        • 2.Sc7#
      • 1...Kd7!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Sd4#
      • 1...Kb5
        • 2.Sc7#
      • 1...Kd5
        • 2.Sg5#
      • 1...Kd7
        • 2.Sxg7#

Anticipated by 5125(1900-1902)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(F)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);S_FLIGHT::S(F)
        • K(c);P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT,XB(E)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::S(F)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • R(G)+S(F),DCHECK
    • Vars
      • K(c);S_FLIGHT::S(F)
      • K(c);S_FLIGHT::B(H)+S(F)
      • K(c);S_FLIGHT::QAB(C)+S(F),XP(f)
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