MESON Chess Problem Database

Problem Display
PID: 232970 (8/7R/3K1p2/8/4p1k1/4Q3/8/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 1999

8/7R/3K1p2/8/4p1k1/4Q3/8/8

#2

3 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rh3?
      • 1...f5
        • 2.Qg3#
      • 1...Kf5!
    • 1.Qg3+?
      • 1...Kf5
        • 2.Rh5#
      • 1...Kxg3!
  • Keys
    • 1.Rg7+!
      • 1...Kh4
        • 2.Qh6#
      • 1...Kf5
        • 2.Qf2#
      • 1...Kh5
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • P(c);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::R(C)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
  • Actual
    • R(C);CHECK
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • K(b);S_FLIGHT::QAR(A)
      • K(b);S_FLIGHT::QAR2(A)
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