MESON Chess Problem Database

Problem Display
PID: 139172 (N7/3p4/3p4/1k1rN2R/8/Q2p4/5p2/3K1B2 w - - 0 1)

Hoek, Willem

Probleemblad, 1974

N7/3p4/3p4/1k1rN2R/8/Q2p4/5p2/3K1B2

#2

6 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Qb4+?
      • 1...Ka6
        • 2.Qb6#
      • 1...Kxb4!
    • 1.Qb3+?
      • 1...Kc5
        • 2.Qc4#
        • 2.Qb6#
      • 1...Ka6
        • 2.Qb6#
      • 1...Ka5!
    • 1.Qa4+?
      • 1...Kc5
        • 2.Sxd3#
        • 2.Sxd7#
        • 2.Qc4#
      • 1...Kxa4!
  • Keys
    • 1.Sxd3!
      • 1...Kc4
        • 2.Qb4#
      • 1...Kc6
        • 2.Qa6#
      • 1...Rxh5
        • 2.Se5#
      • 1...Rc5
        • 2.Sb4#
      • 1...Re5
        • 2.Sxe5#
      • 1...Rf5
        • 2.Se5#
      • 1...Rg5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(c);N_SPINP(b),P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(c);N_SPINP(b),P-FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT,XQ(C)
  • Actual
    • S(D);P_PINR(d),P_SPINS(D),XP(b)
    • Vars
      • K(c);N_SPINR(d),S_FLIGHT::QAR1(C)
      • K(c);N_SPINR(d),S_FLIGHT::QAR2(C)
      • R(d);N_PINS(D),N_SPINR(d),XR(E)::B(B)+S(D)
      • R(d);N_PINS(D)::B(B)+S(D)
      • R(d);N_PINS(D)::B(B)+S(D),XR(d)
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