MESON Chess Problem Database

Problem Display
PID: 182240 (8/8/KQpk1BPN/8/8/8/8/8 w - - 0 1)

Spencer, George Burt

St. Paul's Dispatch, 1906

8/8/KQpk1BPN/8/8/8/8/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qxc6#
  • Tries
    • 1.Qd4+?
      • 1...Kc7
        • 2.Qd8#
      • 1...Ke6!
    • 1.Qd8+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke6!
  • Keys
    • 1.Kb7!
      • threat
        • 2.Qxc6#
      • 1...Kd5
        • 2.Qxc6#
      • 1...Ke6
        • 2.Qxc6#
      • 1...Kd7
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(B),XP(a)
  • Tries
    • Try
      • Q(B);CHECK,N_PINP(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK,N_PINP(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR1(B),XP(a)
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT::QAB1(B),XP(a)
      • K(b);P-FLIGHT::QAR2(B),XP(a)
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