MESON Chess Problem Database

Problem Display
PID: 17201 (n7/1K1pp3/N4p2/2pkPQ2/8/1PPP4/8/8 w - - 0 1)

Mansfield, Comins

L'Alfiere di Re, 1925

n7/1K1pp3/N4p2/2pkPQ2/8/1PPP4/8/8

#2

7 + 6

3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...c4
      • 2.bxc4#
      • 2.dxc4#
    • 1...fxe5
      • 2.Qxd7#
    • 1...d6
      • 2.e6#
    • 1...e6
      • 2.Qe4#
  • Tries
    • 1.exf6+?
      • 1...e5
        • 2.Qxd7#
      • 1...Kd6!
  • Keys
    • 1.d4!
      • 1...cxd4
        • 2.c4#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Sb6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...c4
        • 2.Sb4#
      • 1...d6
        • 2.e6#
      • 1...e6
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::S(F)
    • S(f);N_GUARD::S(F),XS(f)
    • P(c);P_SPINP(c),SBLOCK,XP(D)::QAR2(E),XP(d)
    • P(d);SBLOCK::QAR(E)+P(D)
    • P(e);SBLOCK::QAB1(E)
  • Tries
    • Try
      • P(D);CHECK,XP(c)
      • Vars
        • P(e);P_SPINP(e),SBLOCK::QAR2(E),XP(d)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • P(C);
    • Vars
      • P(a);SBLOCK,XP(C)::P(B)
      • P(c);OGATE,P_SPINP(c),XP(D)::QAR1(E),XP(c)
      • S(f);N_GUARD::S(F)
      • S(f);N_GUARD::S(F),XS(f)
      • P(a);N_GUARD::S(F)
      • P(d);SBLOCK::QAR(E)+P(D)
      • P(e);SBLOCK::QAB(E)
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