MESON Chess Problem Database

Problem Display
PID: 149134 (8/8/8/8/8/3pKQ1b/3P4/4k3 w - - 0 1)

Dehler, Ernst Georg

Munchner Post, 1929

8/8/8/8/8/3pKQ1b/3P4/4k3

#2

3 + 3

15148 Sadier Collection 2013
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bg4
      • 2.Qh1#
    • 1...Bf5
      • 2.Qh1#
    • 1...Be6
      • 2.Qh1#
    • 1...Bd7
      • 2.Qh1#
    • 1...Bc8
      • 2.Qh1#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Qc1#
      • 1...Kf1
        • 2.Qh1#
      • 1...Bg4
        • 2.Qh1#
      • 1...Kd1!
    • 1.Qa8?
      • threat
        • 2.Qa1#
      • 1...Kf1
        • 2.Qh1#
      • 1...Bg4
        • 2.Qh1#
      • 1...Kd1!
    • 1.Qg3+?
      • 1...Kf1
        • 2.Qf2#
      • 1...Kd1!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb1#
      • 1...Kd1
        • 2.Qb1#
      • 1...Kf1
        • 2.Qh1#
      • 1...Bg4
        • 2.Qh1#

Anticipated by 47227(1849), 110515(1870), 36807(1898), 183106(1907), 193729(1916), 166257(1917)

This anticipates 172254(1996), 173962(2005), 169981(2017)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD::QAR(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • B(c);N_GUARD::QAR(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • B(c);N_GUARD::QAR(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • B(c);N_GUARD::QAR(C)
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