MESON Chess Problem Database

Problem Display
PID: 132884 (8/3Q2b1/3Bp2p/1r5p/4k3/R7/B1N1K3/8 w - - 0 1)

Willmott, Arthur

Problem Observer, 2009

8/3Q2b1/3Bp2p/1r5p/4k3/R7/B1N1K3/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Re3#
  • Tries
    • 1.Qxb5?
      • threat
        • 2.Re3#
        • 2.Qd3#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bc3
        • 2.Qd3#
      • 1...Bd4
        • 2.Qd3#
      • 1...e5!
    • 1.Qxe6+?
      • 1...Re5
        • 2.Ra4#
      • 1...Be5!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Rf4#
      • 1...Rb3
        • 2.Qc6#
      • 1...Re5
        • 2.Qa4#
      • 1...Rf5
        • 2.Re3#
      • 1...Be5
        • 2.Qh7#
      • 1...e5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK::R1(D)
  • Tries
    • Try
      • Q(F);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);N_GUARD::QAR1(F),XB(f)
        • B(f);::QAB1(F)
      • Refutation
        • P(d);
    • Try
      • Q(F);CHECK,XP(d)
      • Vars
        • R(b);P_SPINR(b)::R(D)
      • Refutation
        • B(f);P_SPINB(f)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • R(b);N_GUARD::QAB(F)
      • R(b);OGATE::QAR(F)
      • R(b);SBLOCK::R1(D)
      • B(f);OGATE::QAB(F)
      • P(d);OGATE::QAB1(F)
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