MESON Chess Problem Database

Problem Display
PID: 18903 (4k3/3RPR1K/B5p1/3P4/8/4BP2/4Q3/8 w - - 0 1)

Lipton, Michael

2nd HM., Die Schwalbe, 1959

4k3/3RPR1K/B5p1/3P4/8/4BP2/4Q3/8

#2

9 + 2

3174 The Two-move Chess Problem Tradition and Development 1966
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bc5?
      • 1...Kxd7
        • 2.e8Q#
        • 2.e8R#
      • 1...Kxf7
        • 2.e8S#
      • 1...g5!
    • 1.Qc2?
      • 1...Kxd7
        • 2.Qc6#
      • 1...Kxf7
        • 2.Qxg6#
      • 1...g5!
  • Keys
    • 1.Bg5!
      • 1...Kxd7
        • 2.e8S#
      • 1...Kxf7
        • 2.e8Q#
        • 2.e8R#

This anticipates 53570(2004)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(F)::P=Q
        • K(b);OGATE,S_FLIGHT,XR(H)::P=S
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(F)::QAB1(A)
        • K(b);OGATEB,S_FLIGHT,XR(H)::QAB1(A),XP(a)
      • Refutation
        • P(a);
  • Actual
    • B(B);
    • Vars
      • K(b);OGATE,S_FLIGHT,XR(F)::P=S
      • K(b);OGATE,S_FLIGHT,XR(H)::P=Q
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