MESON Chess Problem Database

Problem Display
PID: 18750 (q4n2/1p6/1p5K/8/4R3/3PNk1p/8/6Qn w - - 0 1)

Mansfield, Comins

1st Prize, BCPS Ring Ty., 1958

q4n2/1p6/1p5K/8/4R3/3PNk1p/8/6Qn

#2

5 + 7

1184 Correspondence Chess 1958
3976 FIDE Album (1956-1958) 1961
3550 Complete Mansfield/II 1997
133 The Problemist Supplement 2003
145 StrateGems 2004
23 Die Schwalbe 2012
133 The Problemist Supplement 2015

SOLUTION

  • SOUND
  • Sets
    • 1...h2
      • 2.Qg2#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Qg4#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...Qc8!
    • 1.Sf1?
      • threat
        • 2.Sd2#
        • 2.Sh2#
      • 1...Qa5
        • 2.Sh2#
      • 1...Qb8
        • 2.Sd2#
      • 1...h2
        • 2.Sd2#
        • 2.Sxh2#
      • 1...Qa2!
    • 1.Sc2?
      • threat
        • 2.Se1#
        • 2.Sd4#
      • 1...Qa4
        • 2.Se1#
      • 1...Qa5
        • 2.Sd4#
      • 1...Qd8
        • 2.Se1#
      • 1...Se6
        • 2.Se1#
      • 1...Qa1!
    • 1.Sc4?
      • threat
        • 2.Sd2#
        • 2.Se5#
      • 1...Qa1
        • 2.Sd2#
      • 1...Qa2
        • 2.Se5#
      • 1...Qb8
        • 2.Sd2#
      • 1...Qe8
        • 2.Sd2#
      • 1...Sg6
        • 2.Sd2#
      • 1...Sd7
        • 2.Sd2#
      • 1...Qa5!
    • 1.Sg4?
      • threat
        • 2.Sh2#
        • 2.Se5#
      • 1...Qa1
        • 2.Sh2#
      • 1...Qa2
        • 2.Se5#
      • 1...Qa5
        • 2.Sh2#
      • 1...Qe8
        • 2.Sh2#
      • 1...Sg6
        • 2.Sh2#
      • 1...Sd7
        • 2.Sh2#
      • 1...h2
        • 2.Sxh2#
        • 2.Se5#
      • 1...Qb8!
    • 1.Sf5?
      • threat
        • 2.Sd4#
        • 2.Sh4#
      • 1...Qa1
        • 2.Sh4#
      • 1...Qa4
        • 2.Sh4#
      • 1...Se6
        • 2.Sh4#
      • 1...Sg6
        • 2.Sd4#
      • 1...Qd8!
    • 1.Qf1+?
      • 1...Kg3
        • 2.Qf4#
      • 1...Sf2!
  • Keys
    • 1.Sg2!
      • threat
        • 2.Se1#
        • 2.Sh4#
      • 1...Kg3
        • 2.Se1#
        • 2.Sh4#
      • 1...hxg2
        • 2.Qe3#
      • 1...Qa1
        • 2.Sh4#
      • 1...Qa5
        • 2.Sh4#
      • 1...Qd8
        • 2.Se1#
      • 1...Sg6
        • 2.Se1#

There are these versions: 75610

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(A)
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • Q(f);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);::S(C)
      • Refutation
        • Q(f);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);::S(C)
        • S(g);::S(C)
      • Refutation
        • Q(f);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);::S(C)
        • S(g);::S(C)
      • Refutation
        • Q(f);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);::S(C)
        • S(g);::S(C)
      • Refutation
        • Q(f);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);::S(C)
        • S(g);::S(C)
      • Refutation
        • Q(f);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • P(c);SBLOCK,XS(C)::QAR1(A)
      • Q(f);::S(C)
      • S(g);::S(C)
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