MESON Chess Problem Database

Problem Display
PID: 187903 (4b1K1/N4p2/5P2/p6Q/p1k5/PN6/1p1P4/1B1nb3 w - - 0 1)

Wynne, Frank Wilson

Reading Observer, 1910

4b1K1/N4p2/5P2/p6Q/p1k5/PN6/1p1P4/1B1nb3

#2

8 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bb5
      • 2.Qxf7#
      • 2.Qxb5#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Sxa5#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...axb3
        • 2.d3#
      • 1...Kxb3!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sxa5#
      • 1...Kxb3
        • 2.Qd5#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...Bxb5
        • 2.Qxf7#
      • 1...axb3
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • S(D),XP(f)
      • Vars
        • B(b);XP(B)::S(D),XB(b)
        • P(d);SBLOCK,XS(D)::P(B)
      • Refutation
        • K(e);S_FLIGHT,XS(D)
  • Actual
    • S(G);
    • Threat
      • S(D),XP(f)
    • Vars
      • K(e);S_FLIGHT,XS(D)::QAB(E)
      • B(b);XP(B)::S(D),XB(b)
      • B(h);N_GUARD,SBLOCK,XS(G)::QAB(E),XP(g)
      • P(d);SBLOCK,XS(D)::P(B)
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