MESON Chess Problem Database

Problem Display
PID: 18194 (8/3K3B/5p2/3k4/3n4/1P1N4/1Q5B/8 w - - 0 1)

Macleod, Norman Alasdair

HM., American Chess Bulletin, 1954

8/3K3B/5p2/3k4/3n4/1P1N4/1Q5B/8

#2

6 + 3

3174 The Two-move Chess Problem Tradition and Development 1966
4640 Chess Wizardry: The New ABC of Chess Problems 1996
6455 The Chessboard Adventures of Norman Macleod 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Qc3?
      • threat
        • 2.Sb4#
        • 2.Qc4#
        • 2.Qc5#
      • 1...Sxb3
        • 2.Sb4#
        • 2.Sf4#
      • 1...Sf5
        • 2.Qc4#
      • 1...Sc2
        • 2.Sf4#
        • 2.Qc4#
        • 2.Qc5#
      • 1...Sc6
        • 2.Sf4#
        • 2.Qc4#
        • 2.Qc5#
      • 1...Se6
        • 2.Sb4#
        • 2.Qc4#
      • 1...f5!
  • Keys
    • 1.Bg1!
      • threat
        • 2.Qxd4#
      • 1...Sxb3
        • 2.Qxb3#
      • 1...Sf5
        • 2.Qg2#
      • 1...Sc2
        • 2.Sf4#
      • 1...Se2
        • 2.Sb4#
      • 1...Sf3
        • 2.Sb4#
        • 2.Sf4#
      • 1...Sb5
        • 2.Sb4#
        • 2.Sf4#
        • 2.Qg2#
      • 1...Sc6
        • 2.Sf4#
        • 2.Qg2#
      • 1...Se6
        • 2.Sb4#
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);::QAB1(A)
      • Refutation
        • P(c);
  • Actual
    • B(B);
    • Threat
      • QAR1(A),XS(a)
    • Vars
      • S(a);OGATE,XP(C)::QAB(A),XS(a)
      • S(a);N_GUARD::QAB(A)
      • S(a);::S(D)
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