MESON Chess Problem Database

Problem Display
PID: 158212 (nQ1N4/8/p7/2k5/b3P3/bpB2K2/1N6/8 w - - 0 1)

Andrews, JT

British Chess Magazine 13. Ty., 1906-1907

nQ1N4/8/p7/2k5/b3P3/bpB2K2/1N6/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb2
      • 2.Qb4#
    • 1...Bb4
      • 2.Qxb4#
    • 1...Bc6
      • 2.Se6#
  • Tries
    • 1.Bb4+?
      • 1...Kd4
        • 2.Se6#
        • 2.Qd6#
      • 1...Bxb4!
    • 1.Qd6+?
      • 1...Kb5
        • 2.Qc6#
      • 1...Kxd6!
    • 1.Qc7+?
      • 1...Kb5
        • 2.Qa5#
        • 2.Qc6#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Sxc7!
  • Keys
    • 1.Ba5!
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Se6#
      • 1...Bxb2
        • 2.Qb4#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sc7
        • 2.Qb6#
      • 1...Bc6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD,XS(A)::QAB1(E)
    • B(a);N_GUARD::QAB1(E),XB(a)
    • B(c);P_PINP(D),SBLOCK::S(F)
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • B(a);XB(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAB1(E)
      • Refutation
        • K(d);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • B(c);N_GUARD,P_PINP(D),P_SPINB(c)::QAR1(E),XB(c)
      • Refutation
        • S(f);XQ(E)
  • Actual
    • B(B);
    • Threat
      • QAR2(E)
    • Vars
      • K(d);S_FLIGHT::S(F)
      • B(a);N_GUARD,XS(A)::QAB1(E)
      • S(f);N_GUARD::QAB1(E),XS(f)
      • S(f);N_GUARD::QAB1(E)
      • B(c);P_PINP(D),SBLOCK::S(F)
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Developed and maintained by Brian Stephenson.
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