MESON Chess Problem Database

Problem Display
PID: 69551 (3Q4/2P1P3/pRP5/qrkN3K/rR3p2/N3p3/1PP5/6BB w - - 0 1)

Servais, Albert

Problem (Zagreb), 1955

3Q4/2P1P3/pRP5/qrkN3K/rR3p2/N3p3/1PP5/6BB

#2

13 + 7

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1957

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Bxe3#
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sd5#
        • 2.Qd4#
      • 1...Kxb4+
        • 2.Sd5#
      • 1...Kxb6+
        • 2.Sf5#
      • 1...Qxb4
        • 2.Sec4#
      • 1...Qxb6
        • 2.Qd4#
      • 1...Rxa3
        • 2.Qd4#
      • 1...Raxb4
        • 2.Sec4#
      • 1...Rbxb4
        • 2.Sec4#
      • 1...Rxb6
        • 2.Qd4#
      • 1...fxe3
        • 2.Qd4#
      • 1...f3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::B(A),XP(a)
  • Actual
    • S(G);XP(a)
    • Threat
      • DUALS(2)
    • Vars
      • K(f);CHECK,P_SPINR(e),S_FLIGHT,XR(F)::S(G)
      • K(f);CHECK,P_SPINR(e),S_FLIGHT,XR(I)::B(A)+S(G)
      • Q(d);SBLOCK,XR(F)::B(A)+S(G)
      • Q(d);SBLOCK,XR(I)::QAB1(M)
      • R(b);XS(E)::QAB1(M)
      • R(b);SBLOCK,XR(F)::B(A)+S(G)
      • R(e);XR(F)::B(A)+S(G)
      • R(e);XR(I)::QAB1(M)
      • P(c);P_SPINP(c),XS(G)::QAB1(M)
      • P(c);::QAB1(M)
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