MESON Chess Problem Database

Problem Display
PID: 226830 (B7/8/p1N5/Kp3Q1q/1pkrr2R/1p3N2/1P2n3/3R4 w - - 0 1)

Braithwaite, Kenneth Holmes

US Problem Bulletin, 1982

B7/8/p1N5/Kp3Q1q/1pkrr2R/1p3N2/1P2n3/3R4

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sd2#
    • 1...Re6
      • 2.Sd2#
    • 1...Re7
      • 2.Sd2#
    • 1...Re8
      • 2.Sd2#
  • Tries
    • 1.Rxd4+?
      • 1...Rxd4
        • 2.Sd2#
      • 1...Sxd4!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Sa5#
      • 1...Rxd1
        • 2.Sce5#
      • 1...Rd2
        • 2.Sce5#
      • 1...Qg6
        • 2.Qc5#
      • 1...Qh6
        • 2.Qc5#
      • 1...Rd6
        • 2.Se5#
      • 1...Re6
        • 2.Sd2#
      • 1...a5
        • 2.Sxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • R(f);P_SPINR(e)::S(C)
  • Tries
    • Try
      • R(A);CHECK,XR(e)
      • Vars
        • R(f);P_SPINR(f),XR(A)::S(C)
      • Refutation
        • S(a);XR(A)
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • S(G)
    • Vars
      • R(e);P_SPINR(f),XR(A)::S(G)
      • R(e);P_SPINR(f)::S(G)
      • Q(h);N_GUARD,P_PINS(G)::QAR1(F)
      • R(e);P_PINS(G),P_SPINR(f)::S(C)
      • R(f);P_PINS(G),P_SPINR(e)::S(C)
      • P(i);::S(G),XP(i)
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