MESON Chess Problem Database

Problem Display
PID: 247564 (7Q/8/8/8/8/4KRP1/6k1/8 w - - 0 1)

Chernikh, Vassily

Zadachi i Etyudi, 2003

7Q/8/8/8/8/4KRP1/6k1/8

#2

4 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Rf2+?
      • 1...Kg1
        • 2.Qa1#
        • 2.Qh2#
      • 1...Kxg3!
    • 1.Rf5?
      • 1...Kxg3
        • 2.Rg5#
      • 1...Kg1!
    • 1.Rf6?
      • 1...Kxg3
        • 2.Rg6#
      • 1...Kg1!
    • 1.Rf7?
      • 1...Kxg3
        • 2.Rg7#
      • 1...Kg1!
    • 1.Rf8?
      • 1...Kxg3
        • 2.Rg8#
      • 1...Kg1!
    • 1.Qh3+?
      • 1...Kg1
        • 2.Rf1#
      • 1...Kxh3!
  • Keys
    • 1.Rf1!
      • 1...Kxf1
        • 2.Qh1#
      • 1...Kxg3
        • 2.Rg1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • R(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(C)::R(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(C)::R(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(C)::R(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(C)::R(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::R1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • R(B);
    • Vars
      • K(a);S_FLIGHT,XR(B)::QAR2(D)
      • K(a);P-FLIGHT,XP(C)::R(B)
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