MESON Chess Problem Database

Problem Display
PID: 6986 (4R1BB/2P4K/8/1pbrnN2/2k1n2R/P4p2/2P1q3/1N3Q2 w - - 0 1)

Mansfield, Comins

La Settimana Enigmistica, 1935

4R1BB/2P4K/8/1pbrnN2/2k1n2R/P4p2/2P1q3/1N3Q2

#2

11 + 8

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Sd2#
    • 1...Sg6
      • 2.Sd2#
    • 1...Sd7
      • 2.Sd2#
  • Tries
    • 1.Qxe2+?
      • 1...Sd3
        • 2.Sd2#
        • 2.Qxd3#
      • 1...fxe2!
    • 1.c8R?
      • threat
        • 2.Rxe4#
      • 1...Sd3
        • 2.Sd6#
      • 1...Sg4
        • 2.Rxe4#
      • 1...Sc6
        • 2.Sd2#
      • 1...Sf7
        • 2.Se3#
      • 1...b4!
  • Keys
    • 1.c8Q!
      • threat
        • 2.Rxe4#
      • 1...b4
        • 2.Qa6#
      • 1...Sd3
        • 2.Sd6#
      • 1...Sg4
        • 2.Rxe4#
      • 1...Sc6
        • 2.Sd2#
      • 1...Sf7
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(h);::S(A)
  • Tries
    • Try
      • Q(B);CHECK,XQ(a)
      • Refutation
        • P(b);XQ(B)
    • Try
      • P(G);P_PINB(f)
      • Threat
        • R(E),XS(d)
      • Vars
        • S(h);N_SPINQ(a)::S(F)
        • S(h);N_SPINS(d),OGATE::R(I),XS(d)
        • S(h);N_SPINB(f)::S(A)
        • S(h);N_SPINR(g)::S(F)
      • Refutation
        • P(e);
  • Actual
    • P(G);P_PINB(f)
    • Threat
      • R(E),XS(d)
    • Vars
      • P(e);OGATEB::QAB(G)
      • S(h);N_SPINQ(a)::S(F)
      • S(h);N_SPINS(d),OGATE::R(I),XS(d)
      • S(h);N_SPINB(f)::S(A)
      • S(h);N_SPINR(g)::S(F)
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