MESON Chess Problem Database

Problem Display
PID: 146940 (7R/3kN3/8/2Q5/2K5/8/8/8 w - - 0 1)

Nikitin, Vladimir V

StrateGems, 2012

7R/3kN3/8/2Q5/2K5/8/8/8

#2

4 + 1

5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Rh7?
      • 1...Kd8
        • 2.Qc8#
      • 1...Ke8
        • 2.Qc8#
      • 1...Ke6!
    • 1.Qd5+?
      • 1...Kc7
        • 2.Qc6#
      • 1...Kxe7!
  • Keys
    • 1.Sg8!
      • 1...Ke6
        • 2.Qd5#
      • 1...Kd8
        • 2.Sf6#
      • 1...Ke8
        • 2.Qe7#

Anticipated by 74150(1929), 11829(1972), 164209(1988), 154644(2006)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::R(D)+S(C)
      • K(a);S_FLIGHT::QAR1(B)
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