MESON Chess Problem Database

Problem Display
PID: 101584 (7b/2K5/2n5/2RNk3/3N4/8/1n6/1b5Q w - - 0 1)

White, Alain Campbell

Good Companions, 1924

7b/2K5/2n5/2RNk3/3N4/8/1n6/1b5Q

#2

5 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxh8#
  • Tries
    • 1.Qe1+?
      • 1...Kxd4
        • 2.Qe3#
      • 1...Be4!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qf4#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Sxd4
        • 2.Sc3#
      • 1...Be4
        • 2.Qxh8#
      • 1...Sd3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB(A),XB(e)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(B)::QAB1(A)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);S_FLIGHT,XS(B)::QAB1(A)
      • K(c);P-FLIGHT::QAR1(A)
      • S(d);SBLOCK,XS(B)::R(C)+S(D)
      • B(a);SBLOCK::QAB(A),XB(e)
      • S(b);S_CUTB(a)::QAR2(A)
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