MESON Chess Problem Database

Problem Display
PID: 231005 (8/4p3/2pP4/2p1k3/2PR3Q/7K/3P1N2/8 w - - 0 1)

Slater, George James

Preston Guardian, 1883

(First published on Wed May 16 1883)

8/4p3/2pP4/2p1k3/2PR3Q/7K/3P1N2/8

#2

7 + 4

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e6
      • 2.Qf4#
  • Tries
    • 1.Re4+?
      • 1...Kxd6
        • 2.Qxe7#
      • 1...Kf5!
    • 1.Rd5+?
      • 1...Ke6
        • 2.Qxe7#
      • 1...cxd5!
    • 1.Qg5+?
      • 1...Kxd4
        • 2.Qf4#
      • 1...Ke6!
    • 1.Qxe7+?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kf5!
  • Keys
    • 1.Kg4!
      • 1...Kxd4
        • 2.Kf5#
      • 1...Ke6
        • 2.Qxe7#
      • 1...cxd4
        • 2.Qxe7#
      • 1...exd6
        • 2.Re4#
      • 1...e6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAB1(F)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(G)::QAB1(F),XP(d)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(F),XP(d)
      • Refutation
        • P(c);XR(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(E)::QAR2(F)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(F);CHECK,XP(d)
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(E)::QAR1(F)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(C);S_FLIGHT
    • Vars
      • K(b);S_FLIGHT,XR(E)::QAR(F)+K(C)
      • K(b);P-FLIGHT::QAR1(F),XP(d)
      • P(a);SBLOCK,XR(E)::QAR2(F),XP(d)
      • P(d);SBLOCK,XP(G)::R1(E)
      • P(d);SBLOCK::QAB(F)
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