MESON Chess Problem Database

Problem Display
PID: 273222 (3R1K2/8/4p3/1pN1k3/5RP1/3p2P1/3p4/1q6 w - - 0 1)

Haring, Jacobus

diagrammes, 1978

3R1K2/8/4p3/1pN1k3/5RP1/3p2P1/3p4/1q6

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Sxd3#
    • 1...Qa1
      • 2.Sxd3#
    • 1...Qc1
      • 2.Sxd3#
    • 1...Qd1
      • 2.Sxd3#
    • 1...Qe1
      • 2.Sxd3#
    • 1...Qg1
      • 2.Sxd3#
    • 1...Qh1
      • 2.Sxd3#
    • 1...Qb2
      • 2.Sxd3#
  • Tries
    • 1.Ke7?
      • threat
        • 2.Re4#
      • 1...Qe1
        • 2.Sxd3#
      • 1...Qh1
        • 2.Sxd3#
      • 1...Qb4!
    • 1.Kf7?
      • threat
        • 2.Re4#
      • 1...Qe1
        • 2.Sxd3#
      • 1...Qh1
        • 2.Sxd3#
      • 1...Qb4
        • 2.Sxd3#
      • 1...Qf1!
  • Keys
    • 1.Kg7!
      • threat
        • 2.Re4#
      • 1...Qe1
        • 2.Sxd3#
      • 1...Qh1
        • 2.Sxd3#
      • 1...Qb4
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::S(D),XP(c)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • R1(B)
      • Vars
        • Q(a);N_GUARD::S(D),XP(c)
      • Refutation
        • Q(a);P_PINS(D)
    • Try
      • K(F);P-FLIGHT
      • Threat
        • R1(B)
      • Vars
        • Q(a);N_GUARD::S(D),XP(c)
      • Refutation
        • Q(a);P_PINR(B)
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • R1(B)
    • Vars
      • Q(a);N_GUARD::S(D),XP(c)
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