MESON Chess Problem Database

Problem Display
PID: 271979 (8/b3p2K/pp6/6R1/k1B1NR2/4p3/2nQp3/nbBN4 w - - 0 1)

Caine, Walter Edmund

The Problemist, 1957

8/b3p2K/pp6/6R1/k1B1NR2/4p3/2nQp3/nbBN4

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Sb2#
    • 1...Sb4
      • 2.Sc3#
  • Tries
    • 1.Bb3+?
      • 1...Sxb3
        • 2.Sec3#
      • 1...Kxb3!
    • 1.Bb5+?
      • 1...axb5
        • 2.Sc5#
      • 1...Kb3!
    • 1.Qb4+?
      • 1...Sxb4
        • 2.Sc3#
      • 1...Kxb4!
  • Keys
    • 1.Be6!
      • threat
        • 2.Sec3#
      • 1...Se1
        • 2.Qd4#
      • 1...Sa3
        • 2.Sb2#
      • 1...Sb4
        • 2.Sc3#
      • 1...Sd4
        • 2.Qxd4#
      • 1...b5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);P_PINS(E),SBLOCK::S(B)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • S(a);SBLOCK,XB(D)::R(F)+S(E),DCHECK
      • Refutation
        • K(f);S_FLIGHT,XB(D)
    • Try
      • B(D);CHECK
      • Vars
        • P(g);SBLOCK,XB(D)::R(F)+S(E),DCHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • S(c);P_PINS(E),SBLOCK,XQ(C)::S(B)
      • Refutation
        • K(f);P-FLIGHT,XQ(C)
  • Actual
    • B(D);
    • Threat
      • R(F)+S(E),DCHECK
    • Vars
      • S(c);N_GUARD,P_PINS(E)::QAR(C)
      • S(c);P_PINS(E),SBLOCK::S(B)
      • S(c);N_GUARD,P_PINS(E)::QAR(C),XS(c)
      • P(h);SBLOCK::R(F)+S(E),DCHECK
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Developed and maintained by Brian Stephenson.
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