MESON Chess Problem Database

Problem Display
PID: 244409 (BrR1n3/q2pQ2K/5pp1/5p2/1NPkNP2/1P3p2/3P4/4n3 w - - 0 1)

Dittrich, Stefan

Schach, 1986

BrR1n3/q2pQ2K/5pp1/5p2/1NPkNP2/1P3p2/3P4/4n3

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Qxc5#
    • 1...Qa1
      • 2.Qc5#
    • 1...Qa2
      • 2.Qc5#
    • 1...Qa3
      • 2.Qc5#
    • 1...Qa4
      • 2.Qc5#
    • 1...Qa6
      • 2.Qc5#
    • 1...Rb6
      • 2.Qc5#
    • 1...Sd3
      • 2.Sc2#
    • 1...Sd6
      • 2.Qxd6#
      • 2.Qxf6#
    • 1...Sc7
      • 2.Qxf6#
    • 1...Sg7
      • 2.Qd6#
      • 2.Qxf6#
    • 1...fxe4
      • 2.Qxe4#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Qe3#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sg2
        • 2.Sc2#
      • 1...d5
        • 2.Sc6#
      • 1...d6!
    • 1.Sg5?
      • threat
        • 2.Qe3#
      • 1...Sc2
        • 2.Sxf3#
      • 1...Sg2
        • 2.Sxf3#
      • 1...d6
        • 2.Se6#
      • 1...d5!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qe3#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sg2
        • 2.Sc2#
      • 1...d5
        • 2.Sc6#
      • 1...d6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(g);N_GUARD::QAB1(G),XQ(g)
    • Q(g);N_GUARD::QAB1(G)
    • R(i);S_CUTQ(g)::QAB1(G)
    • S(a);N_GUARD,SBLOCK::S(C)
    • S(j);N_GUARD::QAB(G),XP(e)
    • P(d);OGATE,XS(E)::QAR1(G),XP(d)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(G)
      • Vars
        • S(a);N_GUARD::S(C),XS(a)
        • S(a);N_GUARD::S(C)
        • P(h);N_GUARD,P_PINQ(G)::S(C)
      • Refutation
        • P(h);P_PINQ(G)
    • Try
      • S(E);
      • Threat
        • QAB1(G)
      • Vars
        • S(a);N_GUARD::S(E),XP(b)
        • P(h);N_GUARD,P_PINQ(G)::S(E)
      • Refutation
        • P(h);P_PINQ(G)
  • Actual
    • S(E);
    • Threat
      • QAB1(G)
    • Vars
      • S(a);N_GUARD::S(C),XS(a)
      • S(a);N_GUARD::S(C)
      • P(h);N_GUARD,P_PINQ(G)::S(C)
      • P(h);N_GUARD,P_PINQ(G)::S(E)
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