MESON Chess Problem Database

Problem Display
PID: 157524 (8/3K4/8/2N5/3k4/Q7/8/1B6 w - - 0 1)

Zumbroich, Josef

Danziger Neueste Nachrichten, 1942

8/3K4/8/2N5/3k4/Q7/8/1B6

#2

4 + 1

15148 Sadier Collection 2016
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sa4?
      • threat
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...Ke5
        • 2.Qd6#
      • 1...Kc4!
    • 1.Sb7?
      • threat
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...Ke5
        • 2.Qd6#
      • 1...Kc4!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Ba2#
        • 2.Be4#
      • 1...Kxc3!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qd6#
      • 1...Kxc5!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Qc5#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd5
        • 2.Qc5#
      • 1...Ke5
        • 2.Qd6#

Anticipated by 224225(1887)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(a);P-FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::QAB1(B)
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