MESON Chess Problem Database

Problem Display
PID: 194217 (2K4B/8/8/2kp4/B7/8/8/Q7 w - - 0 1)

Palitzsch, Friedrich Martin

Deutsches Wochenschach, 1917

2K4B/8/8/2kp4/B7/8/8/Q7

#2

4 + 2

5454 Near Snap 2019
6490 yacpdb 2019
3713 Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qc3#
      • 2.Qd4#
    • 1...d4
      • 2.Qxd4#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qc3#
        • 2.Qd4#
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...Kb4!
    • 1.Be8?
      • 1...Kb4
        • 2.Qc3#
      • 1...Kc4
        • 2.Qc3#
      • 1...Kb6
        • 2.Bd4#
      • 1...d4
        • 2.Qxd4#
      • 1...Kd6!
    • 1.Qb2?
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qb5#
      • 1...d4
        • 2.Qxd4#
      • 1...Kd6!
    • 1.Qf6?
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...Kb4!
    • 1.Qa3+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kb6!
  • Keys
    • 1.Bd7!
      • 1...Kb4
        • 2.Qc3#
      • 1...Kc4
        • 2.Qc3#
      • 1...Kb6
        • 2.Bd4#
      • 1...Kd6
        • 2.Qa3#
      • 1...d4
        • 2.Qxd4#

Anticipated by 93841(1896)

This anticipates 18805(1958)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(b);::QAB1(A),XP(b)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::B(D)
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::B(D)
      • K(a);S_FLIGHT::QAB(A)
      • P(b);::QAB1(A),XP(b)
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