MESON Chess Problem Database

Problem Display
PID: 147031 (8/p3Q3/1n1N2p1/2p1pp1R/1p1k4/2N1p3/4K2p/2R5 w - - 0 1)

Bicknell, Stephen

Australian Chess Problem Magazine, 1995

8/p3Q3/1n1N2p1/2p1pp1R/1p1k4/2N1p3/4K2p/2R5

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Sdb5#
    • 1...Sd5
      • 2.Scb5#
    • 1...bxc3
      • 2.Rd1#
    • 1...c4
      • 2.Sdb5#
    • 1...e4
      • 2.Qf6#
      • 2.Qg7#
    • 1...f4
      • 2.Qxe5#
  • Tries
    • 1.Rh4+?
      • 1...e4
        • 2.Qf6#
        • 2.Qg7#
      • 1...f4!
    • 1.Qh4+?
      • 1...e4
        • 2.Qf6#
      • 1...f4!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxe3#
      • 1...bxc3
        • 2.Rd1#
      • 1...e4
        • 2.Qf6#
      • 1...Sc4
        • 2.Sdb5#
      • 1...Sd5
        • 2.Scb5#
      • 1...f4
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(h);SBLOCK::S(E)
    • S(h);SBLOCK::S(C)
    • P(c);SBLOCK,XS(C)::R(A)
    • P(e);SBLOCK::S(E)
    • P(g);::QAB1(F),XP(f)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • P(g);P_SPINP(g)
    • Try
      • Q(F);CHECK
      • Vars
        • P(f);OGATEB,P_SPINP(f)::QAB(F)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F),XP(b)
    • Vars
      • P(c);SBLOCK,XS(C)::R(A)
      • P(f);OGATEB::QAB(F)
      • S(h);SBLOCK::S(E)
      • S(h);SBLOCK::S(C)
      • P(g);OGATE::QAB1(F),XP(f)
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