MESON Chess Problem Database

Problem Display
PID: 16449 (Q7/3N3K/3kp3/8/B7/4P3/8/8 w - - 0 1)

Speckmann, Werner

Schach-Echo, 1940

Q7/3N3K/3kp3/8/B7/4P3/8/8

#2

5 + 2

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc7
      • 2.Qb8#
    • 1...Ke7
      • 2.Qf8#
  • Tries
    • 1.Kg6?
      • 1...Kc7
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5!
    • 1.Kh6?
      • 1...Kc7
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5!
    • 1.Kg7?
      • 1...Kc7
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5!
    • 1.Kg8?
      • 1...Kc7
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5!
    • 1.Kh8?
      • 1...Kc7
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5!
    • 1.Bb5?
      • 1...Kc7
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5!
    • 1.Qa5?
      • threat
        • 2.Qc5#
      • 1...e5
        • 2.Qxe5#
      • 1...Ke7!
    • 1.Qb8+?
      • 1...Ke7
        • 2.Qf8#
      • 1...Kd5!
    • 1.Qc8?
      • threat
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc6#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5!
    • 1.Qe8?
      • 1...Kc7
        • 2.Qb8#
      • 1...e5
        • 2.Qxe5#
      • 1...Kd5!
    • 1.Qf8+?
      • 1...Kc7
        • 2.Qb8#
      • 1...Kd5!
    • 1.e4?
      • 1...Kc7
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5!
  • Keys
    • 1.Qh8!
      • 1...Kd5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5
        • 2.Qxe5#

Anticipated by 4846(1892)

This anticipates 228636(2020)

This is a version of 85815

FEATURES

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