MESON Chess Problem Database

Problem Display
PID: 122245 (8/8/2K2p2/3Pk3/4p3/8/1N4N1/4Q3 w - - 0 1)

Wheeler, Charles Henry

Checkmate, 1904

8/8/2K2p2/3Pk3/4p3/8/1N4N1/4Q3

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qc3#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Sc4#
      • 1...e3
        • 2.Qf4#
      • 1...f5!
    • 1.Qg3+?
      • 1...Kf5
        • 2.Se3#
        • 2.Sh4#
      • 1...Kd4!
    • 1.Qb4?
      • 1...e3
        • 2.Qf4#
      • 1...f5
        • 2.Qc3#
      • 1...Kf5!
    • 1.Qf1?
      • 1...Kd4
        • 2.Qxf6#
      • 1...e3
        • 2.Qf4#
      • 1...f5!
    • 1.Qe3?
      • 1...f5
        • 2.Qc3#
      • 1...Kf5!
  • Keys
    • 1.Qh4!
      • 1...Kd4
        • 2.Qxf6#
      • 1...Kf5
        • 2.Qh5#
      • 1...e3
        • 2.Qf4#
      • 1...f5
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • S(B)
      • Vars
        • P(a);::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);OGATE::QAB1(A)
        • P(c);SBLOCK::QAB(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB(A),XP(c)
        • P(a);::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • P(c);SBLOCK::QAB(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB(A),XP(c)
      • K(b);P-FLIGHT::QAR2(A)
      • P(a);::QAB1(A)
      • P(c);OGATEB,SBLOCK::QAB(A)
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