MESON Chess Problem Database

Problem Display
PID: 164001 (5r2/k7/1NB1R3/1R6/2K1Q3/8/8/8 w - - 0 1)

Uppstrom, Leif

Uppstrom, Rolf

Springaren, 2014

5r2/k7/1NB1R3/1R6/2K1Q3/8/8/8

#2

6 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sc8+?
      • 1...Ka6
        • 2.Bd5#
        • 2.Bb7#
        • 2.Bd7#
        • 2.Ba8#
        • 2.Be8#
      • 1...Rxc8!
    • 1.Ra5+?
      • 1...Kb8
        • 2.Qe5#
      • 1...Kxb6!
    • 1.Re7+?
      • 1...Kb8
        • 2.Rb7#
        • 2.Qe5#
      • 1...Ka6!
    • 1.Qh7+?
      • 1...Ka6
        • 2.Qb7#
      • 1...Kb8
        • 2.Qb7#
      • 1...Rf7!
  • Keys
    • 1.Ba8!
      • threat
        • 2.Qb7#
      • 1...Rc8+
        • 2.Sxc8#
      • 1...Ka6
        • 2.Sc8#
        • 2.Qb7#
      • 1...Kb8
        • 2.Qb7#
      • 1...Rxa8
        • 2.Qxa8#
      • 1...Rf4
        • 2.Sc8#
      • 1...Rf7
        • 2.Sc8#
      • 1...Rb8
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • R(b);P_PINB(E),XS(D)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • R(F);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • B(E);
    • Threat
      • QAR1(B)
    • Vars
      • R(b);CHECK,N_GUARD::S(D),XR(b)
      • K(a);S_FLIGHT::QAR1(B)
      • R(b);OGATE,XB(E)::QAR1(B),XR(b)
      • R(b);N_GUARD,P_PINQ(B)::S(D)
      • R(b);N_GUARD::S(D)
      • R(b);SBLOCK::R(C)
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