MESON Chess Problem Database

Problem Display
PID: 189621 (8/3p1p2/3P1p2/1K1k1N2/3P2B1/6P1/2P1N3/8 w - - 0 1)

Andersson, E Birger

Nya Dagligt Allehanda, 1911

8/3p1p2/3P1p2/1K1k1N2/3P2B1/6P1/2P1N3/8

#2

8 + 4

6490 yacpdb 2019
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc3#
    • 1...Ke6
      • 2.Sf4#
  • Tries
    • 1.Ka4?
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6
        • 2.Sf4#
      • 1...Kc6!
    • 1.Kb4?
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6
        • 2.Sf4#
      • 1...Kc6!
    • 1.Ka6?
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6
        • 2.Bf3#
      • 1...Ke6
        • 2.Sf4#
      • 1...Kc4!
    • 1.Kb6?
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6
        • 2.Sf4#
      • 1...Kc4!
    • 1.Bh3?
      • 1...Ke6
        • 2.Sf4#
      • 1...Ke4!
    • 1.c3?
      • 1...Ke6
        • 2.Sf4#
      • 1...Ke4!
    • 1.c4+?
      • 1...Ke6
        • 2.Sf4#
      • 1...Ke4!
  • Keys
    • 1.Ka5!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6
        • 2.Bf3#
      • 1...Ke6
        • 2.Sf4#

This anticipates 17981(1952)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(B)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(B)
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(A);
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(A);CHECK
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(F);P-FLIGHT
    • Vars
      • K(a);S_FLIGHT::S(G)
      • K(a);S_FLIGHT::S(B)
      • K(a);S_FLIGHT::B(E)
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