MESON Chess Problem Database

Problem Display
PID: 103971 (8/3PPB2/K1k5/1N6/8/3N4/8/8 w - - 0 1)

Andrade, Barry Jack da Costa

Watney, Charles Gold

Chess Amateur (The), 1925

8/3PPB2/K1k5/1N6/8/3N4/8/8

#2

6 + 1

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd7
      • 2.e8Q#
  • Tries
    • 1.Ka5?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kb7!
    • 1.Ka7?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kxb5!
    • 1.Sc1?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kc5!
    • 1.Se1?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kc5!
    • 1.Sb2?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kc5!
    • 1.Sf2?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kc5!
    • 1.Sb4+?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kc5!
    • 1.Sf4?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kc5!
    • 1.Sd4+?
      • 1...Kd6
        • 2.d8Q#
      • 1...Kc7
        • 2.d8Q#
      • 1...Kxd7!
    • 1.Sa7+?
      • 1...Kd6
        • 2.d8Q#
      • 1...Kc7
        • 2.d8Q#
      • 1...Kxd7!
    • 1.Bh5?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kd5!
    • 1.Bg6?
      • 1...Kxd7
        • 2.e8Q#
      • 1...Kd5!
  • Keys
    • 1.e8R!
      • 1...Kxd7
        • 2.Se5#

This anticipates 78598(1985)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT,XP(D)::P=Q
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT,XP(D)::P=Q
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(E);
    • Vars
      • K(a);S_FLIGHT,XP(D)::S(A)
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