MESON Chess Problem Database

Problem Display
PID: 152024 (8/7p/2p1N2Q/n1Ppk3/1K2p3/6Nn/4P2B/8 w - - 0 1)

Berry, Charles Vincent E

Hampstead and Highgate Express, 1897

(First published on Sat Nov 13 1897)

8/7p/2p1N2Q/n1Ppk3/1K2p3/6Nn/4P2B/8

#2

7 + 7

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sf1+?
      • 1...Kf5
        • 2.Se3#
      • 1...Sf4!
    • 1.Sh5+?
      • 1...Sf4
        • 2.Qf6#
      • 1...Kf5!
    • 1.Qxh3?
      • threat
        • 2.Sh5#
        • 2.Qf5#
      • 1...d4
        • 2.Qf5#
      • 1...e3
        • 2.Qf5#
      • 1...h5
        • 2.Sxh5#
        • 2.Qf5#
      • 1...Kf6!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Sf5#
      • 1...Sg5
        • 2.Sgf5#
      • 1...Sg1
        • 2.Sgf5#
      • 1...Sf2
        • 2.Sgf5#
      • 1...Sf4
        • 2.Qg7#
      • 1...Sb3
        • 2.Sxc6#
      • 1...Sc4
        • 2.Sxc6#
      • 1...Sb7
        • 2.Sxc6#
      • 1...e3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT::S(C)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(C);CHECK
      • Vars
        • S(a);P_SPINS(a)::QAB1(G)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(G);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::QAR1(G)
        • P(b);::QAR1(G)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(F);
    • Vars
      • K(e);S_FLIGHT,XS(F)::S(C)
      • S(a);N_GUARD::B(B)+S(C)
      • S(a);SBLOCK::QAB(G)
      • S(c);N_GUARD::S(F),XP(f)
      • P(b);N_GUARD::S(F)
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