MESON Chess Problem Database

Problem Display
PID: 161547 (8/K7/p3p3/7R/2nNk3/r1r5/B3PQn1/2BN2bb w - - 0 1)

Albrecht, Hermann

South African Chess Magazine, 1948

8/K7/p3p3/7R/2nNk3/r1r5/B3PQn1/2BN2bb

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa2
      • 2.Sxc3#
    • 1...Ra4
      • 2.Sxc3#
    • 1...Ra5
      • 2.Sxc3#
    • 1...Se1
      • 2.Qh4#
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qxh4#
      • 2.Qf4#
  • Tries
    • 1.Qh4+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sxh4!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Sc5#
      • 1...Bxf2+
        • 2.Sxf2#
      • 1...Ra5
        • 2.Sxc3#
      • 1...Re3
        • 2.Qf5#
      • 1...Sge3
        • 2.Qf4#
      • 1...Sb2
        • 2.Bd5#
      • 1...Sd2
        • 2.Bd5#
      • 1...Sce3
        • 2.Qf3#
      • 1...Sa5
        • 2.Bd5#
      • 1...Se5
        • 2.Sg5#
      • 1...Sb6
        • 2.Qf5#
      • 1...Sd6
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 3
  • Sets
    • R(d);N_GUARD,XB(C)::S(B),XR(e)
    • R(d);N_GUARD::S(B),XR(e)
    • S(c);N_GUARD::QAR1(E),XS(c)
  • Tries
    • Try
      • Q(E);CHECK,P_SPINS(F)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR1(E),XS(c)
      • Refutation
        • S(c);XQ(E)
  • Actual
    • S(F);P_SPINQ(E),XP(i)
    • Threat
      • S(F)
    • Vars
      • B(a);CHECK,XQ(E)::S(B),XB(a)
      • R(d);N_GUARD::S(B),XR(e)
      • R(e);N_PINQ(E)::QAB1(E)
      • S(c);N_PINQ(E)::QAR1(E)
      • S(f);OGATE::B(C)
      • S(f);N_PINQ(E)::QAB1(E)
      • S(f);SBLOCK::S(F)
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