MESON Chess Problem Database

Problem Display
PID: 196682 (8/8/8/4N3/K2kpQ1B/4N3/8/8 w - - 0 1)

Friedlander, Louis

Chess Poetry, 1919

8/8/8/4N3/K2kpQ1B/4N3/8/8

#2

5 + 2

5454 Near Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qf2?
      • 1...Kc3
        • 2.Sd1#
        • 2.Sd5#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Kc5!
    • 1.Qxe4+?
      • 1...Kc3
        • 2.Qb4#
      • 1...Kc5
        • 2.Qb4#
      • 1...Kxe4!
    • 1.Qf6?
      • 1...Kxe3
        • 2.Qf2#
      • 1...Kc5
        • 2.Sd7#
      • 1...Kc3!
  • Keys
    • 1.Qf8!
      • 1...Kc3
        • 2.Qb4#
      • 1...Kxe3
        • 2.Qf2#
      • 1...Kxe5
        • 2.Qf6#

Anticipated by 4507(1873)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);N_PINP(b)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK,XP(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);N_PINP(b)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(A)::QAB1(C)
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);N_PINP(b)
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);OGATEB,S_FLIGHT,XS(A)::QAB1(C)
      • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(C)
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