MESON Chess Problem Database

Problem Display
PID: 70006 (q3r3/2npNr2/2Rp1kNQ/2p5/3Pp3/3pK1RB/8/B7 w - - 0 1)

Marble, Murray

4th HM.=, Hampshire Telegraph and Post, 1915/I

q3r3/2npNr2/2Rp1kNQ/2p5/3Pp3/3pK1RB/8/B7

#2

9 + 10

56 The Problemist 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6
      • 2.dxc5#
      • 2.d5#
    • 1...Qc8
      • 2.dxc5#
      • 2.d5#
    • 1...Qd8
      • 2.dxc5#
      • 2.d5#
    • 1...Rfxe7
      • 2.Se5#
      • 2.Sh8#
    • 1...Rg7
      • 2.Qf4#
    • 1...Rexe7
      • 2.Sf4#
      • 2.Sh4#
      • 2.Se5#
      • 2.Sf8#
      • 2.Sh8#
    • 1...Sb5
      • 2.Sd5#
    • 1...Sd5+
      • 2.Sxd5#
    • 1...Sa6
      • 2.Sd5#
      • 2.Rxd6#
      • 2.dxc5#
      • 2.d5#
    • 1...Se6
      • 2.Sd5#
    • 1...cxd4+
      • 2.Bxd4#
  • Tries
    • 1.Rg2?
      • threat
        • 2.Rf2#
      • 1...Sd5+
        • 2.Sxd5#
      • 1...cxd4+
        • 2.Bxd4#
      • 1...Se6
        • 2.Sd5#
      • 1...Qa2!
  • Keys
    • 1.Kxe4!
      • threat
        • 2.Rf3#
      • 1...Qxc6+
        • 2.d5#
      • 1...Rfxe7+
        • 2.Se5#
      • 1...Rexe7+
        • 2.Se5#
      • 1...Sd5
        • 2.Rxd6#
      • 1...Se6
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(h);SBLOCK::QAR2(H)
    • S(f);N_GUARD::S(I)
    • S(f);CHECK,N_GUARD::S(I),XS(f)
    • S(f);N_GUARD,N_SPINP(d)::S(I)
    • P(c);CHECK,N_SPINP(d),OGATE,P_SPINP(c),XP(E)::B(A),XP(c)
  • Tries
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • S(f);CHECK,N_GUARD::S(I),XS(f)
        • P(c);CHECK,N_SPINP(d),OGATE,P_SPINP(c),XP(E)::B(A),XP(c)
        • S(f);N_GUARD,N_SPINP(d)::S(I)
      • Refutation
        • Q(i);
  • Actual
    • K(B);P-FLIGHT,P_SPINR(F),P_SPINS(I),XP(b)
    • Threat
      • R(C)
    • Vars
      • Q(i);CHECK,N_GUARD,N_SPINP(d),XR(F)::B(A)+P(E)
      • R(h);CHECK,SBLOCK,XS(I)::QAR(H)+S(G)
      • R(j);CHECK,SBLOCK,XS(I)::QAR(H)+S(G)
      • S(f);N_PINR(F)::R(F),XP(d)
      • S(f);N_PINS(I),N_SPINP(d)::S(I)
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