MESON Chess Problem Database

Problem Display
PID: 216242 (Q2K4/5p2/4pRp1/2p1k1p1/2P3P1/3Pp3/P3B3/8 w - - 0 1)

Ryall, Louise Brett Georgina

Toronto Globe, 1881

Q2K4/5p2/4pRp1/2p1k1p1/2P3P1/3Pp3/P3B3/8

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qd5#
  • Tries
    • 1.Kd7?
      • 1...Kxf6
        • 2.Qh8#
      • 1...Kd4!
    • 1.Qf3?
      • 1...Kd6
        • 2.Qd5#
      • 1...Kd4!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Qd5#
      • 1...Kxf6!
    • 1.Qb7?
      • 1...Kd4
        • 2.Qb2#
      • 1...Kd6
        • 2.Qd5#
        • 2.Qc7#
      • 1...Kxf6!
    • 1.Qb8+?
      • 1...Kd4
        • 2.Qb2#
      • 1...Kxf6!
  • Keys
    • 1.Qh1!
      • 1...Kd4
        • 2.Qa1#
      • 1...Kd6
        • 2.Qd5#
      • 1...Kxf6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(e),S_FLIGHT::QAR1(G)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Vars
        • K(c);OGATEB,S_FLIGHT,XR(F)::QAB(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT::QAR1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT::QAR1(G)
      • Refutation
        • K(c);S_FLIGHT,XR(F)
    • Try
      • Q(G);
      • Vars
        • K(c);S_FLIGHT::QAB(G)
      • Refutation
        • K(c);S_FLIGHT,XR(F)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(G)
      • Refutation
        • K(c);S_FLIGHT,XR(F)
  • Actual
    • Q(G);
    • Vars
      • K(c);S_FLIGHT::QAB(G)
      • K(c);P_SPINP(e),S_FLIGHT::QAR1(G)
      • K(c);OGATEB,S_FLIGHT,XR(F)::QAB(G)
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