MESON Chess Problem Database

Problem Display
PID: 41489 (2b5/3N1Q2/3kP3/N7/1K5B/8/8/8 w - - 0 1)

Bonner Feast, Frederick

Birmingham Post, 1919

2b5/3N1Q2/3kP3/N7/1K5B/8/8/8

#2

6 + 2

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Kc7
      • 2.Qf4#
  • Tries
    • 1.Kc4?
      • threat
        • 2.Bg3#
      • 1...Kc7
        • 2.Qf4#
      • 1...Ba6+!
    • 1.Be7+?
      • 1...Kc7
        • 2.Qf4#
      • 1...Kd5!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kxe6!
    • 1.Qf5?
      • threat
        • 2.Qe5#
      • 1...Kc7
        • 2.Qf4#
        • 2.Qc5#
        • 2.Qe5#
      • 1...Bxd7!
    • 1.Qf6?
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Kc7
        • 2.Bg3#
        • 2.Qe5#
        • 2.Qf4#
      • 1...Bxd7!
    • 1.Qe7+?
      • 1...Kc7
        • 2.Bg3#
        • 2.Qc5#
      • 1...Kd5!
  • Keys
    • 1.e7!
      • threat
        • 2.e8S#
      • 1...Kc7
        • 2.e8S#
      • 1...Kxd7
        • 2.e8S#
      • 1...Bxd7
        • 2.Bg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(F)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • B(B)
      • Vars
        • K(a);S_FLIGHT::QAB(F)
      • Refutation
        • B(b);CHECK
    • Try
      • B(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(F)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Refutation
        • B(b);XS(E)
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • B(b);XS(E)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(D);
    • Threat
      • P=S
    • Vars
      • K(a);S_FLIGHT::P=S
      • K(a);P-FLIGHT,XS(E)::P=S
      • B(b);SBLOCK,XS(E)::B(B)
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