MESON Chess Problem Database

Problem Display
PID: 30940 (4Q3/8/8/8/6k1/7N/6NK/8 w - - 0 1)

Servais, Albert

Bulletin de l'AJEC, 1937

4Q3/8/8/8/6k1/7N/6NK/8

#2

4 + 1

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1947
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Se3+?
      • 1...Kh4
        • 2.Qh8#
      • 1...Kf3!
    • 1.Shf4?
      • threat
        • 2.Qh5#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kg5
        • 2.Qg6#
      • 1...Kf5!
    • 1.Qe3?
      • 1...Kh5
        • 2.Qg5#
      • 1...Kf5!
    • 1.Qe6+?
      • 1...Kf3
        • 2.Se1#
        • 2.Sh4#
      • 1...Kh5!
  • Keys
    • 1.Sgf4!
      • threat
        • 2.Qh5#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kh4
        • 2.Qh5#
      • 1...Kf5
        • 2.Qe6#

Anticipated by 222908(1926)

This anticipates 214872(1975), 227343(1984), 137118(1992), 245851(2002)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAB1(D)
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);P-FLIGHT::QAR1(D)
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