MESON Chess Problem Database

Problem Display
PID: 668 (Q3NBB1/5rr1/2NPqpn1/1P1k1p2/1P6/1K2pP2/8/8 w - - 0 1)

Mansfield, Comins

British Chess Magazine, 1924

Q3NBB1/5rr1/2NPqpn1/1P1k1p2/1P6/1K2pP2/8/8

#2

10 + 8

3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Sc7#
    • 1...Qe5
      • 2.Sc7#
    • 1...Ra7
      • 2.Sxf6#
    • 1...Rb7
      • 2.Sxf6#
    • 1...Rc7
      • 2.Sxf6#
    • 1...Rd7
      • 2.Sxf6#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Kb2#
        • 2.Kc2#
        • 2.Ka3#
        • 2.Kc3#
        • 2.Ka4#
      • 1...Qe4
        • 2.Sc7#
      • 1...Qe5
        • 2.Kc2#
        • 2.Ka3#
        • 2.Ka4#
        • 2.Sc7#
      • 1...Ra7
        • 2.Sxf6#
      • 1...Se5!
  • Keys
    • 1.Kc3!
      • threat
        • 2.Qa2#
      • 1...Qe5+
        • 2.Sd4#
      • 1...Qe4
        • 2.Sc7#
      • 1...Ra7
        • 2.Sxf6#
      • 1...Se5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(d);P_SPINR(g)::S(H)
    • R(g);N_GUARD,P_SPINQ(d)::S(H),XP(e)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(5)
      • Vars
        • Q(d);P_SPINR(g)::S(H)
        • R(g);N_GUARD,P_SPINQ(d)::S(H),XP(e)
      • Refutation
        • S(f);
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • QAB(G)
    • Vars
      • Q(d);CHECK,P_SPINR(g),SBLOCK::QAB(G)+S(E)
      • Q(d);P_SPINR(g)::S(H)
      • R(g);N_GUARD,P_SPINQ(d)::S(H),XP(e)
      • S(f);SBLOCK::QAB(G)+S(E),DCHECK
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