MESON Chess Problem Database

Problem Display
PID: 159579 (8/2n5/2Kp1Q2/2p5/2k5/P2Np3/b3N3/b2B4 w - - 0 1)

Tomson, Brian

Chess in Australia, 1970

8/2n5/2Kp1Q2/2p5/2k5/P2Np3/b3N3/b2B4

#2

6 + 7

15561 Fifty Chess Problems (Brian Tomson) 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Sxb2#
    • 1...Bc3
      • 2.Qxc3#
  • Tries
    • 1.Qxa1?
      • threat
        • 2.Sb2#
        • 2.Qc3#
      • 1...Sb5
        • 2.Sb2#
      • 1...Sd5
        • 2.Sb2#
      • 1...Kxd3!
    • 1.Qh4+?
      • 1...Bd4
        • 2.Sb2#
      • 1...Kxd3!
    • 1.Qf4+?
      • 1...Bd4
        • 2.Sb2#
      • 1...Kxd3!
  • Keys
    • 1.Qb2!
      • 1...Kxd3
        • 2.Qc2#
      • 1...Bxb2
        • 2.Sxb2#
      • 1...Bb1
        • 2.Qb3#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sd5
        • 2.Qb5#
      • 1...Sa6
        • 2.Qb5#
      • 1...Se6
        • 2.Qb5#
      • 1...Sa8
        • 2.Qb5#
      • 1...Se8
        • 2.Qb5#
      • 1...d5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(D),XB(a)
    • B(a);N_GUARD::QAR1(F),XB(a)
  • Tries
    • Try
      • Q(F);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(g);::S(D)
      • Refutation
        • K(d);S_FLIGHT,XS(D)
    • Try
      • Q(F);CHECK
      • Vars
        • B(a);P_SPINB(a)::S(D)
      • Refutation
        • K(d);S_FLIGHT,XS(D)
    • Try
      • Q(F);CHECK
      • Vars
        • B(a);P_SPINB(a)::S(D)
      • Refutation
        • K(d);S_FLIGHT,XS(D)
  • Actual
    • Q(F);
    • Vars
      • K(d);S_FLIGHT,XS(D)::QAB1(F)
      • B(a);XQ(F)::S(D),XB(a)
      • B(b);N_GUARD::QAB1(F)
      • B(b);N_GUARD::QAB1(F),XB(b)
      • S(g);N_GUARD::QAB1(F),XS(g)
      • S(g);N_GUARD::QAB1(F)
      • P(f);N_GUARD::S(D)
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Developed and maintained by Brian Stephenson.
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