MESON Chess Problem Database

Problem Display
PID: 202734 (K2B4/5p2/p1Qn4/1pp2p2/5Np1/2PNkqR1/3p1bb1/3rnB2 w - - 0 1)

Williams, Philip Hamilton

Western Daily Mercury, 1919

(First published on Fri Oct 24 1919)

K2B4/5p2/p1Qn4/1pp2p2/5Np1/2PNkqR1/3p1bb1/3rnB2

#2

8 + 14

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Sxg2#
    • 1...Sxd3
      • 2.Sxg2#
    • 1...Se4
      • 2.Sd5#
    • 1...Sb7
      • 2.Qe8#
    • 1...c4
      • 2.Bb6#
  • Tries
    • 1.Bg5?
      • threat
        • 2.Sxg2#
      • 1...Bh1
        • 2.Sg2#
      • 1...Bh3
        • 2.Sg2#
      • 1...Bxf1!
    • 1.Qe4+?
      • 1...Sxe4
        • 2.Sd5#
      • 1...fxe4
        • 2.Sd5#
      • 1...Kxe4!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Bxc5#
      • 1...Sxd3
        • 2.Sxg2#
      • 1...Sc2
        • 2.Sxg2#
      • 1...Se4
        • 2.Sd5#
      • 1...Sb7
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::S(E),XB(e)
    • S(b);N_GUARD,XS(C)::S(E),XB(e)
    • S(m);N_PINQ(F),SBLOCK::S(E)
    • S(m);N_PINQ(F)::QAR(F)
    • P(j);OGATEB::B(H)
  • Tries
    • Try
      • B(H);
      • Threat
        • B(H)+S(E),DCHECK,XB(e)
      • Vars
        • B(e);::B(H)+S(E),DCHECK
      • Refutation
        • B(e);XB(A)
    • Try
      • Q(F);CHECK
      • Vars
        • S(m);SBLOCK,XQ(F)::S(E)
        • P(k);SBLOCK,XQ(F)::S(E)
      • Refutation
        • K(f);N_SPINQ(g),P-FLIGHT,XQ(F)
  • Actual
    • B(H);P_PINP(j)
    • Threat
      • B(H),XP(j)
    • Vars
      • S(b);N_GUARD,XS(C)::S(E),XB(e)
      • S(b);N_GUARD::S(E),XB(e)
      • S(m);N_PINQ(F),SBLOCK::S(E)
      • S(m);N_PINQ(F)::QAR(F)
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