MESON Chess Problem Database

Problem Display
PID: 18822 (4n3/8/Q3P3/1Npk4/7R/bp1p1NK1/2qP2B1/8 w - - 0 1)

Mansfield, Comins

Radio Times, 1958

4n3/8/Q3P3/1Npk4/7R/bp1p1NK1/2qP2B1/8

#2

8 + 7

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sc3#
    • 1...Qd1
      • 2.Sc3#
    • 1...Qa2
      • 2.Sc3#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Sd6
      • 2.Sc7#
      • 2.Qxd6#
    • 1...Sf6
      • 2.Sc7#
      • 2.Qd6#
    • 1...Sc7
      • 2.Sxc7#
      • 2.Qd6#
    • 1...Sg7
      • 2.Sc7#
      • 2.Qd6#
  • Tries
    • 1.Sfd4+?
      • 1...Kc4
        • 2.Sxc2#
        • 2.Se2#
        • 2.Sf5#
        • 2.Sc6#
      • 1...Ke5!
    • 1.Bh3?
      • threat
        • 2.Qb7#
        • 2.Qa8#
      • 1...Sd6
        • 2.Sc7#
        • 2.Qxd6#
      • 1...Sc7
        • 2.Sxc7#
        • 2.Qb7#
        • 2.Qd6#
      • 1...c4!
    • 1.Rh5+?
      • 1...Ke4
        • 2.Se1#
        • 2.Sg1#
        • 2.Sh2#
        • 2.Sfd4#
        • 2.Sh4#
        • 2.Se5#
        • 2.Re5#
        • 2.Qb7#
        • 2.Qc6#
        • 2.Qa8#
      • 1...Kc4!
  • Keys
    • 1.Kf4!
      • threat
        • 2.Se5#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Qc4+
        • 2.Sfd4#
      • 1...Kc4
        • 2.Ke5#
      • 1...Sd6
        • 2.Sc7#
      • 1...Qd1
        • 2.Sc3#
      • 1...Sf6
        • 2.Sc7#
      • 1...c4
        • 2.Rh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD::S(F)
    • Q(a);N_GUARD::S(F),XQ(a)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);
    • Try
      • R(E);CHECK
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • B(B)+S(C)
    • Vars
      • Q(a);CHECK,XP(A)::B(B)+S(C),XQ(a)
      • Q(a);CHECK,SBLOCK::B(B)+S(C)
      • K(f);S_FLIGHT::R(E)+K(D)
      • S(g);N_GUARD::S(F)
      • Q(a);N_GUARD::S(F)
      • P(e);SBLOCK::R(E)
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