MESON Chess Problem Database

Problem Display
PID: 196922 (6n1/1K2p2b/2pkB3/2p3N1/8/8/8/Q7 w - - 0 1)

Neukomm, Gyula (Julius) R

Deutsches Wochenschach, 1919

6n1/1K2p2b/2pkB3/2p3N1/8/8/8/Q7

#2

4 + 6

5454 Near Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qh2#
      • 1...c4
        • 2.Qd4#
      • 1...Bc2!
    • 1.Qc3?
      • threat
        • 2.Qg3#
      • 1...c4
        • 2.Qd4#
      • 1...Bd3!
    • 1.Qe1?
      • threat
        • 2.Sf7#
        • 2.Qg3#
      • 1...Be4
        • 2.Qg3#
      • 1...Bg6
        • 2.Qg3#
      • 1...Sh6
        • 2.Qg3#
      • 1...c4!
    • 1.Qg1?
      • threat
        • 2.Qh2#
        • 2.Qg3#
      • 1...c4
        • 2.Qd4#
      • 1...Ke5!
    • 1.Qa7?
      • threat
        • 2.Qb8#
      • 1...c4
        • 2.Qd4#
      • 1...Ke5!
  • Keys
    • 1.Qh8!
      • 1...Sf6
        • 2.Qb8#
      • 1...c4
        • 2.Qd4#
      • 1...Bc2
        • 2.Qh2#
      • 1...Bb1
        • 2.Qh2#
      • 1...Bd3
        • 2.Qh2#
      • 1...Be4
        • 2.Qh2#
      • 1...Bf5
        • 2.Qh2#
      • 1...Bg6
        • 2.Qh2#
      • 1...Sh6
        • 2.Qb8#

This anticipates 108845(1927)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::QAR2(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(a);N_GUARD::QAR2(A)
      • Refutation
        • B(e);
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(a);N_GUARD::QAR2(A)
      • Refutation
        • B(e);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAB(A)
        • S(f);::QAB(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);N_GUARD::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(a);OGATE::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • S(f);OGATE::QAB(A)
      • P(a);N_GUARD::QAR2(A)
      • B(e);OGATE::QAB(A)
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