MESON Chess Problem Database

Problem Display
PID: 15933 (2rr3b/1nnp4/1N2N1p1/4k1P1/4P3/Q1P4b/BB1RR3/4K3 w - - 0 1)

Hoffmann, Fritz

Sachsische Zeitung, 1989

2rr3b/1nnp4/1N2N1p1/4k1P1/4P3/Q1P4b/BB1RR3/4K3

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re8
      • 2.Sxd7#
    • 1...Rf8
      • 2.Sxd7#
    • 1...Rg8
      • 2.Sxd7#
    • 1...Sa5
      • 2.Qd6#
    • 1...Sd6
      • 2.Qxd6#
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qf4#
      • 1...Rxf8
        • 2.Sxd7#
      • 1...Bxe6
        • 2.c4#
      • 1...Sxe6
        • 2.Rd5#
      • 1...dxe6
        • 2.Sc4#
      • 1...Sd5
        • 2.exd5#
      • 1...d5
        • 2.exd5#
      • 1...Bf5
        • 2.exf5#
      • 1...Bf6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • R(h);N_GUARD::S(J),XP(f)
    • S(d);N_GUARD::QAB1(F)
    • S(d);N_GUARD::QAB1(F),XS(d)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • R(h);N_GUARD,XQ(F)::S(J),XP(f)
      • B(a);SBLOCK,XS(K)::B(C)+P(G)
      • S(e);N_GUARD,SBLOCK,XS(K)::R1(D)
      • P(f);SBLOCK,XS(K)::S(J)
      • S(e);OGATE::R(E)+P(H),XS(e)
      • P(f);OGATE::R(E)+P(H),XP(f)
      • B(a);OGATE::R(E)+P(H),XB(a)
      • B(i);N_GUARD::QAB1(F),XB(i)
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