MESON Chess Problem Database

Problem Display
PID: 95240 (4K3/2B5/8/2Nk4/P7/8/P4QP1/8 w - - 0 1)

Herland, Sigmund

Deutsches Wochenschach, 1911

4K3/2B5/8/2Nk4/P7/8/P4QP1/8

#2

7 + 1

16336 Problemes choisis composes par Sigmund Herland (Yaremska-Iliescu) 2001
6490 yacpdb 2009
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qf3#
      • 1...Ke6
        • 2.Qf7#
      • 1...Kc6!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Qd6#
      • 1...Kxd4!
    • 1.Qf4?
      • 1...Kc6
        • 2.Qd6#
      • 1...Kxc5!
  • Keys
    • 1.Se6!
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qf3#
      • 1...Kxe6
        • 2.Qf7#

Anticipated by 178121(1900)

This anticipates 194131(1917), 18738(1957), 161748(1974)

FEATURES

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