MESON Chess Problem Database

Problem Display
PID: 139993 (b2B1nq1/8/3p1R2/4k3/2pr1p2/2PpN3/K2N4/4QR2 w - - 0 1)

Daniel, Arthur William

4th HM., BCPS 034. Ty., 1938

b2B1nq1/8/3p1R2/4k3/2pr1p2/2PpN3/K2N4/4QR2

#2

8 + 9

56 The Problemist 1938

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Sexc4#
      • 2.Sg4#
    • 1...Re4
      • 2.Sf3#
    • 1...Rd5
      • 2.Sd1#
      • 2.Sc2#
      • 2.Sg2#
      • 2.Sexc4#
      • 2.Sg4#
      • 2.Sf5#
    • 1...Bd5
      • 2.Sexc4#
      • 2.Sg4#
    • 1...Se6
      • 2.Rf5#
    • 1...fxe3
      • 2.R1f5#
    • 1...d5
      • 2.Sexc4#
      • 2.Sg4#
  • Tries
    • 1.Sd5+?
      • 1...Re4
        • 2.Qxe4#
      • 1...Kxd5!
  • Keys
    • 1.Qa1!
      • threat
        • 2.cxd4#
      • 1...fxe3
        • 2.R1f5#
      • 1...Qd5
        • 2.Sg4#
      • 1...Re4
        • 2.Sf3#
      • 1...Rd5
        • 2.Sexc4#
      • 1...Se6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK,S_CUTB(g)::S(D)
    • S(h);SBLOCK::R1(G)
    • P(d);OGATE,P_SPINP(d),XS(F)::R1(B)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(A),XR(c)
      • Refutation
        • K(e);P-FLIGHT,XS(F)
  • Actual
    • Q(A);
    • Threat
      • P(E),XR(c)
    • Vars
      • P(d);OGATE,XS(F)::R1(B)
      • Q(i);N_GUARD,SBLOCK::S(F)
      • R(c);SBLOCK,S_CUTB(g)::S(D)
      • R(c);N_GUARD,SBLOCK,S_CUTQ(i)::S(F),XP(b)
      • S(h);SBLOCK::R1(G)
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