MESON Chess Problem Database

Problem Display
PID: 224655 (3B3Q/8/2PP1N2/4k3/2P3B1/3P4/4K3/8 w - - 0 1)

Gold, Samuel

De Amsterdammer, 1887

3B3Q/8/2PP1N2/4k3/2P3B1/3P4/4K3/8

#2

9 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Se4#
      • 2.Sd7#
  • Tries
    • 1.Sd7+?
      • 1...Kxd6
        • 2.Qf6#
        • 2.Qh6#
      • 1...Kf4!
    • 1.Bh3?
      • 1...Kd4
        • 2.Se4#
        • 2.Sd7#
      • 1...Kf4
        • 2.Sh5#
      • 1...Kxd6!
    • 1.Bc8?
      • 1...Kd4
        • 2.Se4#
        • 2.Sd7#
      • 1...Kf4
        • 2.Sh5#
      • 1...Kxd6!
    • 1.Bc7?
      • threat
        • 2.Sd5#
        • 2.Sh5#
      • 1...Kd4
        • 2.Se4#
        • 2.Sd7#
      • 1...Kf4!
    • 1.Be7?
      • threat
        • 2.Sd5#
        • 2.Sh5#
      • 1...Kd4
        • 2.Se4#
        • 2.Sd7#
      • 1...Kf4!
    • 1.Qg7?
      • 1...Kd4
        • 2.Se4#
        • 2.Sd7#
      • 1...Kf4
        • 2.Sh5#
      • 1...Kxd6!
    • 1.Qh6?
      • 1...Kxd6
        • 2.Sd7#
      • 1...Kd4!
    • 1.Qe8+?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kxd6
        • 2.Se4#
      • 1...Kd4!
  • Keys
    • 1.Bd7!
      • 1...Kd4
        • 2.Se4#
      • 1...Kf4
        • 2.Sh5#
      • 1...Kxd6
        • 2.Se4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • B(H);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(H);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(I);
      • Vars
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • Q(I);
      • Vars
        • K(a);S_FLIGHT,XP(F)::QAR(I)+S(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(I)
        • K(a);S_FLIGHT,XP(F)::S(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(a);S_FLIGHT::QAB(I)+S(G)
      • K(a);S_FLIGHT::S(G)
      • K(a);S_FLIGHT,XP(F)::S(G)
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