MESON Chess Problem Database

Problem Display
PID: 10344 (5nQ1/3N4/3n1b2/3P3p/3k4/1pR1Rp2/2P1P3/B6K w - - 0 1)

Mansfield, Comins

Sunday Times, 1963

5nQ1/3N4/3n1b2/3P3p/3k4/1pR1Rp2/2P1P3/B6K

#2

9 + 7

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Rcd3#
    • 1...Se4
      • 2.Red3#
  • Tries
    • 1.Re4+?
      • 1...Sxe4
        • 2.e3#
      • 1...Kxe4!
    • 1.Qe6?
      • threat
        • 2.Red3#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sxe6!
    • 1.Qg4+?
      • 1...Kxd5
        • 2.Sb6#
        • 2.Sxf6#
        • 2.Rc5#
      • 1...Se4
        • 2.Red3#
        • 2.Qxe4#
      • 1...hxg4!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qd1#
      • 1...Kxd5
        • 2.Rc5#
      • 1...bxc2
        • 2.Rc5#
      • 1...fxe2
        • 2.Re5#
      • 1...Sc4
        • 2.Rcd3#
      • 1...Se4
        • 2.Red3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK::B(A)+R(E),DCHECK
    • S(e);SBLOCK::R1(F)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • S(e);SBLOCK,XR(F)::P(D)
      • Refutation
        • K(c);P-FLIGHT,XR(F)
    • Try
      • Q(I);
      • Threat
        • R1(F)
      • Vars
        • B(f);N_GUARD::QAB1(I),XB(f)
      • Refutation
        • S(g);XQ(I)
    • Try
      • Q(I);CHECK
      • Refutation
        • P(d);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)
    • Vars
      • K(c);P-FLIGHT,XP(G)::R1(E)
      • P(a);N_GUARD,XP(C)::B(A)+R(E)
      • P(b);N_GUARD,XP(D)::QAB(I)+R(F)
      • S(e);SBLOCK::B(A)+R(E),DCHECK
      • S(e);SBLOCK::QAB(I)+R(F),DCHECK
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