MESON Chess Problem Database

Problem Display
PID: 56142 (3N1Q1b/8/K1BR1rNp/pp3k1P/q1n4P/r5R1/p7/8 w - - 0 1)

Mansfield, Comins

Complete Mansfield/III, 1999

3N1Q1b/8/K1BR1rNp/pp3k1P/q1n4P/r5R1/p7/8

#2

9 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Rd5+?
      • 1...Se5
        • 2.Rxe5#
      • 1...Ke4!
    • 1.Qxh6?
      • threat
        • 2.Rg5#
        • 2.Qf4#
        • 2.Qg5#
      • 1...Rxg3
        • 2.Qf4#
      • 1...Rxd6
        • 2.Qf4#
        • 2.Qg5#
      • 1...Sxd6
        • 2.Rg5#
        • 2.Qg5#
      • 1...Re6
        • 2.Qf4#
        • 2.Qg5#
      • 1...Rf3
        • 2.Rg5#
        • 2.Qg5#
      • 1...Sb2
        • 2.Rg5#
        • 2.Qg5#
      • 1...Sd2
        • 2.Rg5#
        • 2.Qg5#
      • 1...Se3
        • 2.Rg5#
        • 2.Qg5#
      • 1...Se5
        • 2.Se7#
        • 2.Rg5#
        • 2.Qg5#
      • 1...Sb6
        • 2.Rg5#
        • 2.Qg5#
      • 1...Rxg6!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Rf4#
      • 1...Rf3
        • 2.Rxf3#
      • 1...Sb2
        • 2.Qc5#
      • 1...Sd2
        • 2.Qc5#
      • 1...Se3
        • 2.Rf3#
      • 1...Se5
        • 2.Se7#
      • 1...Sb6
        • 2.Be4#
      • 1...Sd6
        • 2.Bd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK,P_SPINB(E)
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::R1(F),XS(d)
      • Refutation
        • K(g);N_SPINR(h),S_FLIGHT
    • Try
      • Q(I);N_PINR(h),XP(i)
      • Threat
        • DUALS(3)
      • Vars
        • R(b);XR(A)::QAR1(I)
      • Refutation
        • R(h);XS(G)
  • Actual
    • R(F);P_SPINB(E)
    • Threat
      • R1(F)
    • Vars
      • R(b);N_GUARD::R(A),XR(b)
      • S(d);N_GUARD::QAR(I)
      • S(d);S_CUTR(b)::R(A)
      • S(d);SBLOCK::S(G)
      • S(d);N_PINB(E)::B(E)
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