MESON Chess Problem Database

Problem Display
PID: 103309 (8/3p4/N2p2N1/3k1P2/8/2Kn4/2Q5/7b w - - 0 1)

Gamage, Frederick

Checkmate, 1901

8/3p4/N2p2N1/3k1P2/8/2Kn4/2Q5/7b

#2

5 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxd3#
    • 1...Bg2
      • 2.Qxg2#
    • 1...Sc5
      • 2.Sb4#
    • 1...Se5
      • 2.Se7#
  • Tries
    • 1.Qb3+?
      • 1...Kc6
        • 2.Se7#
      • 1...Ke4!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qxh1#
        • 2.Qb7#
      • 1...Ke4
        • 2.Qxd3#
      • 1...Kc6
        • 2.Se7#
      • 1...Bg2
        • 2.Qb7#
      • 1...Bf3
        • 2.Qb7#
      • 1...Be4
        • 2.Qb7#
      • 1...Sc1
        • 2.Qb7#
      • 1...Se1
        • 2.Qb7#
      • 1...Sb2
        • 2.Qxh1#
      • 1...Sf2
        • 2.Qb7#
      • 1...Sb4
        • 2.Qxh1#
      • 1...Sf4
        • 2.Qb7#
      • 1...Sc5
        • 2.Sb4#
      • 1...Se5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINS(b),S_FLIGHT::QAB1(A),XS(b)
    • B(a);N_GUARD::QAB(A),XB(a)
    • S(b);N_GUARD,SBLOCK::S(D)
    • S(b);SBLOCK::S(E)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::S(E)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::QAB1(A),XS(b)
      • K(c);S_FLIGHT::S(E)
      • B(a);::QAB(A)
      • B(a);SBLOCK::QAB(A)
      • S(b);::QAB(A)
      • S(b);::QAB(A),XB(a)
      • S(b);N_GUARD,SBLOCK::S(D)
      • S(b);SBLOCK::S(E)
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Developed and maintained by Brian Stephenson.
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