MESON Chess Problem Database

Problem Display
PID: 78413 (8/1p1N1b2/1K6/3p1R2/1Bpk4/6n1/2PNnP2/8 w - - 0 1)

Shire, David J

Australian Chess, 2005

8/1p1N1b2/1K6/3p1R2/1Bpk4/6n1/2PNnP2/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Bc5#
    • 1...Se4
      • 2.Sf3#
    • 1...c3
      • 2.Bc5#
  • Tries
    • 1.Se5?
      • threat
        • 2.Sef3#
      • 1...Sg1
        • 2.c3#
      • 1...Bh5!
    • 1.Sf6?
      • threat
        • 2.Sf3#
      • 1...Bh5
        • 2.Rxd5#
      • 1...c3
        • 2.Bc5#
      • 1...Sg1!
    • 1.Rf4+?
      • 1...Se4
        • 2.Sf3#
      • 1...Sxf4!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sf3#
      • 1...Bh5
        • 2.Se6#
      • 1...Sg1
        • 2.c3#
      • 1...c3
        • 2.Scb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(a);SBLOCK::B(D)
    • S(b);SBLOCK::S(B)
    • P(c);SBLOCK::B(D)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • S(a);N_GUARD::P(A)
      • Refutation
        • B(g);
    • Try
      • S(G);
      • Threat
        • S(B)
      • Vars
        • B(g);N_GUARD::R1(E),XP(e)
        • P(c);SBLOCK::B(D)
      • Refutation
        • S(a);
    • Try
      • R(E);CHECK
      • Vars
        • S(b);P_SPINS(b)::S(B)
      • Refutation
        • S(a);XR(E)
  • Actual
    • S(G);
    • Threat
      • S(B)
    • Vars
      • B(g);N_GUARD::S(G)
      • S(a);N_GUARD::P(A)
      • P(c);N_GUARD::S(G)
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