MESON Chess Problem Database

Problem Display
PID: 52294 (8/1Q6/2pKp3/4Np2/p1Nk4/2p5/5Pn1/7B w - - 0 1)

Dittrich, Stefan

3rd Prize, Het Belgisch Schaakbord (L'Echiquier Belge), 1984-1985

8/1Q6/2pKp3/4Np2/p1Nk4/2p5/5Pn1/7B

#2

6 + 7

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.fxe3#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qb4#
      • 1...c5
        • 2.Sdf3#
      • 1...Se3!
    • 1.Sa3?
      • threat
        • 2.Qb4#
      • 1...Ke4
        • 2.Qb4#
      • 1...c5
        • 2.Sc2#
        • 2.Sb5#
      • 1...Se3!
    • 1.Se3?
      • threat
        • 2.Qb4#
      • 1...Ke4
        • 2.Qb4#
      • 1...c5
        • 2.Sc2#
      • 1...Sxe3!
    • 1.Sa5?
      • threat
        • 2.Qb4#
      • 1...Ke4
        • 2.Qb4#
      • 1...Se3
        • 2.Saxc6#
      • 1...c5!
    • 1.Qb4?
      • threat
        • 2.Sb2#
        • 2.Sd2#
        • 2.Sa3#
        • 2.Se3#
        • 2.Sa5#
        • 2.Sb6#
      • 1...Ke4
        • 2.Sb2#
        • 2.Sd2#
        • 2.Sa3#
        • 2.Se3#
        • 2.Sa5#
        • 2.Sb6#
      • 1...Se3
        • 2.Sxe3#
        • 2.Qc5#
        • 2.fxe3#
      • 1...a3
        • 2.Sb2#
        • 2.Sd2#
        • 2.Sxa3#
        • 2.Se3#
        • 2.Sa5#
        • 2.Sb6#
      • 1...c5!
    • 1.Qb6+?
      • 1...Ke4
        • 2.Qe3#
      • 1...c5!
    • 1.Qa7+?
      • 1...Ke4
        • 2.Qe3#
      • 1...c5!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Qb4#
      • 1...Ke4
        • 2.Qb4#
      • 1...Se3
        • 2.Sxc6#
      • 1...c5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::P(B),XS(a)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR2(F)
      • Vars
        • P(f);::S(C)
      • Refutation
        • S(a);
    • Try
      • S(C);
      • Threat
        • QAR2(F)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(f),P_SPINS(a)::QAR(F)
      • Refutation
        • S(a);
    • Try
      • S(C);
      • Threat
        • QAR2(F)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(f),P_SPINS(a)::QAR(F)
        • P(f);::S(C)
      • Refutation
        • S(a);XS(C)
    • Try
      • S(C);
      • Threat
        • QAR2(F)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(f),P_SPINS(a)::QAR(F)
        • S(a);::S(C),XP(f)
      • Refutation
        • P(f);
    • Try
      • Q(F);
      • Threat
        • DUALS(6)
      • Refutation
        • P(f);
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT,P_SPINS(a)::QAR1(F)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT,P_SPINS(a)::QAR1(F)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • S(C);
    • Threat
      • QAR2(F)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(f),P_SPINS(a)::QAR(F)
      • S(a);::S(D),XP(f)
      • P(f);::S(D)
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