MESON Chess Problem Database

Problem Display
PID: 230233 (2B5/3pkpQ1/8/4P3/2P1N1K1/8/8/8 w - - 0 1)

Taylor, Jesse Paul

English Mechanic and World of Science, 1879

(First published on Tue May 6 1879)

2B5/3pkpQ1/8/4P3/2P1N1K1/8/8/8

#2

6 + 3

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qf6#
  • Tries
    • 1.Sd6?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kd8!
    • 1.Qf8+?
      • 1...Ke6
        • 2.Qd6#
        • 2.Qe8#
      • 1...Kxf8!
    • 1.Qxf7+?
      • 1...Kd8
        • 2.Qxd7#
      • 1...Kxf7!
  • Keys
    • 1.Qg8!
      • 1...f5+
        • 2.exf5 ep#
      • 1...Ke6
        • 2.Qe8#
      • 1...d5
        • 2.exd5 ep#
      • 1...d6
        • 2.exd6#
      • 1...f6
        • 2.exf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(c),P-FLIGHT,P_SPINP(a)::QAR1(E)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT,P_SPINP(a)::QAR1(E)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • Q(E);CHECK,N_PINP(c)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK,XP(c)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
  • Actual
    • Q(E);N_PINP(c)
    • Vars
      • P(c);CHECK,OGATE::P(D),XP(c),EP
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(E)
      • P(a);OGATE::P(D),XP(a),EP
      • P(a);OGATE::P(D),XP(a)
      • P(c);OGATE::P(D),XP(c)
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