MESON Chess Problem Database

Problem Display
PID: 5051 (2K2n2/1p1B1N2/1p1R4/2p2pr1/4k3/4p2N/1n2Q3/4b1Rb w - - 0 1)

Blake, Percy Francis

Hampstead and Highgate Express, 1898

(First published on Sat Mar 12 1898)

2K2n2/1p1B1N2/1p1R4/2p2pr1/4k3/4p2N/1n2Q3/4b1Rb

#2

7 + 11

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Shxg5#
  • Tries
    • 1.Kxb7?
      • threat
        • 2.Bc6#
      • 1...f4
        • 2.Shxg5#
      • 1...Sxd7!
    • 1.Qd3+?
      • 1...Kf3
        • 2.Se5#
        • 2.Sfxg5#
      • 1...Sxd3!
    • 1.Qc4+?
      • 1...Kf3
        • 2.Se5#
        • 2.Sfxg5#
      • 1...Sxc4!
    • 1.Qc2+?
      • 1...Kf3
        • 2.Se5#
        • 2.Sfxg5#
      • 1...Sd3!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qxb7#
      • 1...Kf3
        • 2.Sfxg5#
      • 1...bxa6
        • 2.Bc6#
      • 1...e2
        • 2.Qxe2#
      • 1...f4
        • 2.Shxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(g);SBLOCK::S(C),XR(h)
  • Tries
    • Try
      • K(G);S_FLIGHT,XP(j)
      • Threat
        • B(E)
      • Vars
        • P(g);SBLOCK::S(C),XR(h)
      • Refutation
        • S(k);XB(E)
    • Try
      • Q(B);CHECK,N_PINP(d)
      • Refutation
        • S(c);XQ(B)
    • Try
      • Q(B);CHECK,N_PINP(d)
      • Refutation
        • S(c);XQ(B)
    • Try
      • Q(B);CHECK,N_PINP(d)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • Q(B);N_PINP(d)
    • Threat
      • QAB(B),XP(j)
    • Vars
      • K(e);S_FLIGHT::S(F),XR(h)
      • P(j);N_GUARD,XQ(B)::B(E)
      • P(d);OGATEB::QAR2(B),XP(d)
      • P(g);SBLOCK::S(C),XR(h)
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