MESON Chess Problem Database

Problem Display
PID: 113494 (8/4pN2/3pnB2/3n4/4pkp1/4N3/5PK1/2Q5 w - - 0 1)

Shinkman, William Anthony

St. John Globe, 1888

8/4pN2/3pnB2/3n4/4pkp1/4N3/5PK1/2Q5

#2

6 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Bg5#
    • 1...Sc5
      • 2.Bg5#
    • 1...Sg5
      • 2.Bxg5#
    • 1...Sc7
      • 2.Bg5#
    • 1...Sg7
      • 2.Bg5#
    • 1...Sd8
      • 2.Bg5#
    • 1...Sf8
      • 2.Bg5#
    • 1...g3
      • 2.fxg3#
  • Tries
    • 1.Bh4?
      • threat
        • 2.Bg3#
      • 1...g3
        • 2.Bxg3#
        • 2.fxg3#
      • 1...Sxe3+!
  • Keys
    • 1.Qc5!
      • 1...Sxe3+
        • 2.fxe3#
      • 1...Sxf6
        • 2.Qf5#
      • 1...Sxc5
        • 2.Bg5#
      • 1...dxc5
        • 2.Be5#
      • 1...exf6
        • 2.Qxd6#
      • 1...Sc3
        • 2.Qf5#
      • 1...Sb4
        • 2.Qf5#
      • 1...Sb6
        • 2.Qf5#
      • 1...Sdc7
        • 2.Qf5#
      • 1...Sd4
        • 2.Bg5#
      • 1...Sg5
        • 2.Bxg5#
      • 1...Sec7
        • 2.Bg5#
      • 1...Sg7
        • 2.Bg5#
      • 1...Sd8
        • 2.Bg5#
      • 1...Sf8
        • 2.Bg5#
      • 1...g3
        • 2.fxg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::B(E)
    • S(f);N_GUARD::B(E),XS(f)
    • P(c);OGATE::P(B),XP(c)
  • Tries
    • Try
      • B(E);
      • Threat
        • B(E)
      • Refutation
        • S(d);CHECK,P_SPINS(d),XS(D)
  • Actual
    • Q(A);
    • Vars
      • S(d);CHECK,OGATE,XS(D)::P(B),XS(d)
      • S(d);OGATE,XB(E)::QAR1(A)
      • S(f);N_GUARD,XQ(A)::B(E)
      • P(e);N_GUARD,XQ(A)::B(E)
      • P(g);N_GUARD,XB(E)::QAB(A),XP(e)
      • S(d);OGATE::QAR1(A)
      • S(f);N_GUARD::B(E)
      • S(f);N_GUARD::B(E),XS(f)
      • P(c);OGATE::P(B),XP(c)
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