MESON Chess Problem Database

Problem Display
PID: 199294 (3K2b1/1Rp3Qq/P1kPB3/5Np1/N2p4/4n3/2n5/1r6 w - - 0 1)

Pachl, Franz

The Problemist, 1982

3K2b1/1Rp3Qq/P1kPB3/5Np1/N2p4/4n3/2n5/1r6

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Qxc7#
      • 2.Qd7#
    • 1...Qg6
      • 2.Qxc7#
      • 2.Qd7#
    • 1...Qh1
      • 2.Qxc7#
      • 2.Qd7#
    • 1...Qh2
      • 2.Qxc7#
      • 2.Qd7#
    • 1...Qh3
      • 2.Qxc7#
      • 2.Qd7#
    • 1...Qh4
      • 2.Qxc7#
      • 2.Qd7#
    • 1...Qh5
      • 2.Qxc7#
      • 2.Qd7#
    • 1...Qh6
      • 2.Qxc7#
      • 2.Qd7#
    • 1...Qh8
      • 2.Qxc7#
      • 2.Qd7#
    • 1...Rb5
      • 2.Rxc7#
    • 1...Sd5
      • 2.Bd7#
    • 1...cxd6
      • 2.Se7#
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qc5#
      • 1...Qd7+
        • 2.Bxd7#
      • 1...Qe7+
        • 2.Sxe7#
      • 1...Qxf5
        • 2.Rxc7#
      • 1...cxd6
        • 2.Qxd6#
      • 1...Rb5
        • 2.Qxb5#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK::R1(F),XP(g)
    • S(c);SBLOCK::B(E)
    • P(g);SBLOCK,XP(D)::S(B)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • Q(h);CHECK,N_GUARD::B(E),XQ(h)
      • Q(h);CHECK,N_GUARD::S(B),XQ(h)
      • Q(h);N_GUARD,XS(B)::R1(F),XP(g)
      • P(g);OGATE,XP(D)::QAR1(G),XP(g)
      • R(a);N_GUARD::QAB1(G),XR(a)
      • S(c);N_GUARD::QAB1(G),XS(c)
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