MESON Chess Problem Database

Problem Display
PID: 222932 (6B1/8/6Q1/8/3k4/B7/8/4K3 w - - 0 1)

L'Hermet, Johann Georg Rudolf

Magdeburger Zeitung, 1885

6B1/8/6Q1/8/3k4/B7/8/4K3

#2

4 + 1

5454 Near Snap 2020
3713 Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Ke2?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke5!
    • 1.Qe4+?
      • 1...Kc3
        • 2.Qc4#
      • 1...Kxe4!
    • 1.Qf5?
      • 1...Ke3
        • 2.Bc5#
      • 1...Kc3!
    • 1.Qe6?
      • 1...Kc3
        • 2.Qc4#
      • 1...Kd3!
  • Keys
    • 1.Bh7!
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qe4#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd5
        • 2.Qe4#
      • 1...Ke5
        • 2.Qd6#

Anticipated by 2392(0000), 120940(1877), 214368(1878), 9327(1880), 222385(1884)

This anticipates 158307(1906-1907), 184881(1908), 189438(1911), 189685(1912), 178322(1928), 96980(1943), 76834(1947), 103960(1993), 202752(2016)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);P-FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::QAB1(C)
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