MESON Chess Problem Database

Problem Display
PID: 54179 (8/2bB4/Q4B2/3bp1N1/2pr1kP1/4nppK/5R2/4N3 w - - 0 1)

Kun, Joseph

Chess Life, 1956

8/2bB4/Q4B2/3bp1N1/2pr1kP1/4nppK/5R2/4N3

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Rxf3#
    • 1...Be4
      • 2.Se6#
    • 1...Be6
      • 2.Rxf3#
    • 1...Bf7
      • 2.Rxf3#
    • 1...Bg8
      • 2.Rxf3#
    • 1...Sd1
      • 2.Sg2#
    • 1...Sf1
      • 2.Sg2#
    • 1...Sc2
      • 2.Sg2#
    • 1...Sg2
      • 2.Sxg2#
    • 1...Sxg4
      • 2.Sg2#
    • 1...Sf5
      • 2.Sg2#
  • Keys
    • 1.Qxc4!
      • threat
        • 2.Sd3#
      • 1...Bxc4
        • 2.Rxf3#
      • 1...Sxc4
        • 2.Sg2#
      • 1...Sxg4
        • 2.Sg2#
      • 1...Sd1
        • 2.Sg2#
      • 1...Sf1
        • 2.Sg2#
      • 1...Sc2
        • 2.Sg2#
      • 1...Sg2
        • 2.Sxg2#
      • 1...Sf5
        • 2.Sg2#
      • 1...Be4
        • 2.Se6#
      • 1...e4
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(e);S_CUTB(g)::R1(B),XP(b)
    • B(g);N_GUARD,SBLOCK::S(E)
    • B(g);N_GUARD,P_PINP(D)::R1(B),XP(b)
    • B(g);N_GUARD::R1(B),XP(b)
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(a);N_GUARD,XP(D)::S(A)
  • Actual
    • Q(F);P_PINR(e),XP(d)
    • Threat
      • S(A)
    • Vars
      • B(g);N_GUARD,N_SPINR(e),XQ(F)::R1(B),XP(b)
      • S(a);N_GUARD,N_SPINR(e),XQ(F)::S(A)
      • S(a);N_GUARD,XP(D)::S(A)
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(a)
      • B(g);N_GUARD,N_SPINR(e),SBLOCK::S(E)
      • P(h);N_SPINR(e),OGATEB::QAB(F),XB(i)
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Developed and maintained by Brian Stephenson.
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