MESON Chess Problem Database

Problem Display
PID: 5998 (7k/R6B/5N2/3K4/5p2/4pQ2/4P1n1/B6q w - - 0 1)

Stubbs, Arthur Goodwin

Chess Amateur (The), 1926

7k/R6B/5N2/3K4/5p2/4pQ2/4P1n1/B6q

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Se4#
      • 2.Sg4#
      • 2.Sh5#
      • 2.Se8#
      • 2.Sg8#
    • 1...Qh3
      • 2.Se4#
      • 2.Sg4#
      • 2.Sh5#
      • 2.Se8#
      • 2.Sg8#
    • 1...Qh5+
      • 2.Sxh5#
    • 1...Qxh7
      • 2.Rxh7#
    • 1...Se1
      • 2.Se4#
      • 2.Sg4#
      • 2.Sh5#
      • 2.Se8#
      • 2.Sg8#
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qe8#
      • 1...Qd1+
        • 2.Bd3#
      • 1...Qxh5+
        • 2.Sxh5#
      • 1...Se1+
        • 2.Se4#
      • 1...Sh4+
        • 2.Be4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(a);CHECK,N_GUARD::B(A)+S(E),XQ(a)
    • Q(a);OGATE,XB(G)::R1(F),XQ(a)
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • Q(a);CHECK,N_GUARD::QAR(C)+B(G)
      • Q(a);CHECK,XQ(C)::B(A)+S(E),XQ(a)
      • S(b);CHECK,S_CUTQ(a)::B(A)+S(E)
      • S(b);CHECK,S_CUTQ(a)::QAR(C)+B(G)
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