MESON Chess Problem Database

Problem Display
PID: 250728 (4r3/p3n2Q/K4p2/R4Pqb/1pPNkpR1/4P3/1B1PPb2/7r w - - 0 1)

Beck, Friedrich

Deutsche Schachzeitung, 1984

4r3/p3n2Q/K4p2/R4Pqb/1pPNkpR1/4P3/1B1PPb2/7r

#2

11 + 11

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Rxf4#
    • 1...Qg6
      • 2.Rxf4#
    • 1...Qg7
      • 2.Rxf4#
    • 1...Qg8
      • 2.Rxf4#
    • 1...Ra8
      • 2.Qxe7#
    • 1...Rb8
      • 2.Qxe7#
    • 1...Rc8
      • 2.Qxe7#
    • 1...Rd8
      • 2.Qxe7#
    • 1...Rf8
      • 2.Qxe7#
    • 1...Rg8
      • 2.Qxe7#
    • 1...Rh8
      • 2.Qxe7#
    • 1...Bxe3
      • 2.d3#
    • 1...Bg6
      • 2.Qxh1#
    • 1...Bf7
      • 2.Qxh1#
    • 1...Sxf5
      • 2.Qb7#
    • 1...Sg6
      • 2.Qb7#
    • 1...Sc8
      • 2.Qb7#
    • 1...Sg8
      • 2.Qb7#
  • Tries
    • 1.Sc2?
      • threat
        • 2.d3#
      • 1...Rd8
        • 2.Qxe7#
      • 1...Rd1!
    • 1.Se6?
      • threat
        • 2.Sc5#
      • 1...Bxe3
        • 2.d3#
      • 1...Qg6
        • 2.Rxf4#
      • 1...Bg6
        • 2.Qxh1#
      • 1...Sg6
        • 2.Qb7#
      • 1...Rc8!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Sc5#
      • 1...Bxe3
        • 2.d3#
      • 1...Qg6
        • 2.Rxf4#
      • 1...Rc8
        • 2.Qxe7#
      • 1...Bg6
        • 2.Qxh1#
      • 1...Sg6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 13
  • Sets
    • Q(f);N_GUARD,P_SPINQ(f),XP(I)::R1(G),XP(e)
    • Q(f);N_GUARD::R1(G),XP(e)
    • R(k);N_GUARD::QAR(K),XS(j)
    • B(b);SBLOCK,XP(D)::P(B)
    • B(g);OGATE::QAB(K),XR(a)
    • S(j);OGATE,P_SPINS(j),XP(I)::QAB(K)
    • S(j);OGATE::QAB(K)
  • Tries
    • Try
      • S(F);
      • Threat
        • P(B)
      • Vars
        • R(k);N_GUARD::QAR(K),XS(j)
      • Refutation
        • R(a);
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(b);SBLOCK,XP(D)::P(B)
        • Q(f);N_GUARD::R1(G),XP(e)
        • B(g);OGATE::QAB(K),XR(a)
        • S(j);OGATE::QAB(K)
      • Refutation
        • R(k);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • B(b);SBLOCK,XP(D)::P(B)
      • Q(f);N_GUARD::R1(G),XP(e)
      • R(k);N_GUARD::QAR(K),XS(j)
      • B(g);OGATE::QAB(K),XR(a)
      • S(j);OGATE::QAB(K)
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