MESON Chess Problem Database

Problem Display
PID: 215984 (8/P7/P7/k7/8/1Q6/6p1/6Kb w - - 0 1)

Sommer, Bruno Oswald

Funkschach, 1926

8/P7/P7/k7/8/1Q6/6p1/6Kb

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa6
      • 2.a8Q#
      • 2.a8R#
  • Tries
    • 1.Qb1?
      • 1...Kxa6
        • 2.a8Q#
        • 2.a8R#
      • 1...Ka4!
    • 1.Qb2?
      • 1...Kxa6
        • 2.a8Q#
        • 2.a8R#
      • 1...Ka4!
    • 1.Qb4+?
      • 1...Kxa6
        • 2.a8Q#
        • 2.a8R#
      • 1...Kxb4!
    • 1.Qb8?
      • 1...Kxa6
        • 2.a8Q#
        • 2.a8R#
      • 1...Ka4!
  • Keys
    • 1.a8S!
      • 1...Kxa6
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT,XP(C)::P=Q
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(c);P-FLIGHT,XP(C)::P=Q
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);P-FLIGHT,XP(C)::P=Q
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(C)::P=Q
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(c);P-FLIGHT,XP(C)::P=Q
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(c);P-FLIGHT,XP(C)::QAR1(B)
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