MESON Chess Problem Database

Problem Display
PID: 18237 (5qb1/3r3B/2n1R1Rp/3p2pK/2ppN1p1/1P1kB3/3P4/n1Q3N1 w - - 0 1)

Mansfield, Comins

5th HM., Probleemblad, 1954

5qb1/3r3B/2n1R1Rp/3p2pK/2ppN1p1/1P1kB3/3P4/n1Q3N1

#2

10 + 12

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Sf2#
    • 1...Qb4
      • 2.Sf2#
    • 1...Qc5
      • 2.Sf2#
      • 2.Sxc5#
    • 1...Qd6
      • 2.Sf2#
    • 1...Qe7
      • 2.Sf2#
    • 1...Qg7
      • 2.Sf2#
      • 2.Sc5#
    • 1...Qf1
      • 2.Sc5#
    • 1...Qf2
      • 2.Sxf2#
      • 2.Sc5#
    • 1...Qf3
      • 2.Sc5#
    • 1...Qf4
      • 2.Sc5#
    • 1...Qf5
      • 2.Sc5#
    • 1...Qf6
      • 2.Sc5#
    • 1...Qf7
      • 2.Sc5#
    • 1...Qa8
      • 2.Sf2#
      • 2.Sc5#
    • 1...Qb8
      • 2.Sf2#
      • 2.Sc5#
    • 1...Qc8
      • 2.Sf2#
      • 2.Sc5#
    • 1...Qd8
      • 2.Sf2#
      • 2.Sc5#
    • 1...Qe8
      • 2.Sf2#
      • 2.Sc5#
    • 1...Rd6
      • 2.Sc5#
    • 1...Re7
      • 2.Sc5#
    • 1...Bf7
      • 2.Sf2#
    • 1...Sxb3
      • 2.Qb1#
    • 1...Se7
      • 2.Sc5#
    • 1...dxe3
      • 2.Qc3#
    • 1...dxe4
      • 2.Qxc4#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Sf2#
      • 1...Qxf4
        • 2.Sc5#
      • 1...dxe4
        • 2.Qxc4#
      • 1...g3!
    • 1.Re7?
      • threat
        • 2.Sc5#
      • 1...Qxe7
        • 2.Sf2#
      • 1...Sxb3
        • 2.Qb1#
      • 1...dxe3
        • 2.Qc3#
      • 1...dxe4!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Sc5#
      • 1...Kxe4
        • 2.Rge6#
      • 1...Qxd6
        • 2.Sf2#
      • 1...Sxb3
        • 2.Qb1#
      • 1...dxe3
        • 2.Qxc4#
      • 1...dxe4
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(k);N_GUARD::S(F)
    • Q(k);N_GUARD,P_PINR(I)::S(F)
    • R(j);S_CUTQ(k)::S(F)
    • B(l);P_PINR(I),S_CUTQ(k)::S(F)
    • S(a);N_GUARD,XP(D)::QAB(A)
    • S(h);S_CUTQ(k)::S(F)
    • P(d);N_GUARD,XB(E)::QAR1(A)
    • P(f);N_GUARD,XS(F)::QAB1(A),XP(c)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(F)
      • Vars
        • Q(k);N_GUARD,XB(E)::S(F)
        • P(f);N_GUARD,XS(F)::QAB1(A),XP(c)
      • Refutation
        • P(e);
    • Try
      • R(H);
      • Threat
        • S(F)
      • Vars
        • Q(k);N_GUARD,XR(H)::S(F)
        • S(a);N_GUARD,XP(D)::QAB(A)
        • P(d);N_GUARD,XB(E)::QAR1(A)
      • Refutation
        • P(f);XS(F)
  • Actual
    • R(H);
    • Threat
      • S(F)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(F)::B(J)+R(I),DCHECK
      • Q(k);N_GUARD,XR(H)::S(F)
      • S(a);N_GUARD,XP(D)::QAB(A)
      • P(d);P_SPINP(f),XB(E)::QAB1(A),XP(c)
      • P(f);P_SPINP(d),SBLOCK,XS(F)::QAR1(A)
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