MESON Chess Problem Database

Problem Display
PID: 181894 (2Q5/2pB1K2/3k4/8/8/1N3P2/8/8 w - - 0 1)

Ursic, Andrej Anton

Deutsches Wochenschach, 1905

2Q5/2pB1K2/3k4/8/8/1N3P2/8/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kf6?
      • 1...c5
        • 2.Qc6#
      • 1...c6
        • 2.Qxc6#
      • 1...Kd5!
    • 1.Qxc7+?
      • 1...Kd5
        • 2.Be6#
        • 2.Qc5#
      • 1...Kxc7!
    • 1.f4?
      • 1...c6
        • 2.Qxc6#
      • 1...c5
        • 2.Qc6#
      • 1...Kd5!
  • Keys
    • 1.Be6!
      • 1...Ke5
        • 2.Qxc7#
      • 1...Kc6
        • 2.Qa6#
      • 1...c6
        • 2.Qb8#
      • 1...c5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);OGATE::QAR1(E)
        • P(b);OGATE::QAR1(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK,XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • P(B);
      • Vars
        • P(b);OGATE::QAR1(E),XP(b)
        • P(b);OGATE::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(a);S_FLIGHT::QAB(E),XP(b)
      • K(a);P-FLIGHT,P_SPINP(b)::QAR2(E)
      • P(b);OGATEB,SBLOCK::QAB(E)
      • P(b);OGATE::QAB1(E),XP(b)
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