MESON Chess Problem Database

Problem Display
PID: 151034 (8/8/qP3K2/B4B2/8/2P1k2N/3N4/3Q4 w - - 0 1)

Challenger, Alfred Clement

Hampstead and Highgate Express, 1896

(First published on Sat Jul 25 1896)

8/8/qP3K2/B4B2/8/2P1k2N/3N4/3Q4

#2

8 + 2

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Sxf1#
    • 1...Qc4
      • 2.Sxc4#
    • 1...Qb7
      • 2.Sf1#
      • 2.Sc4#
      • 2.Qe1#
    • 1...Qc8
      • 2.Sf1#
      • 2.Qe1#
    • 1...Qxa5
      • 2.Sf1#
      • 2.Sc4#
      • 2.Qe1#
    • 1...Qxb6+
      • 2.Bxb6#
    • 1...Qa7
      • 2.Sf1#
      • 2.Sc4#
      • 2.Qe1#
    • 1...Qa8
      • 2.Sf1#
      • 2.Sc4#
      • 2.Qe1#
  • Keys
    • 1.c4!
      • threat
        • 2.Sf1#
      • 1...Qxb6+
        • 2.Bxb6#
      • 1...Kd4
        • 2.Qg1#
      • 1...Qxc4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_GUARD,N_PINP(G),P_PINB(F)::S(B),XQ(b)
    • Q(b);N_GUARD,N_PINP(G)::S(B),XQ(b)
    • Q(b);CHECK,OGATE,XP(G)::B(E),XQ(b)
  • Actual
    • P(C);
    • Threat
      • S(B)
    • Vars
      • Q(b);CHECK,OGATE,XP(G)::B(E),XQ(b)
      • K(a);S_FLIGHT::QAB(A)
      • Q(b);N_PINP(G),XP(C)::S(B),XQ(b)
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