MESON Chess Problem Database

Problem Display
PID: 18835 (7B/5n1b/1QP4p/1nP4N/4kNB1/4P3/4R2K/4b3 w - - 0 1)

Mansfield, Comins

9th Prize, South African Chess Magazine, 1958

7B/5n1b/1QP4p/1nP4N/4kNB1/4P3/4R2K/4b3

#2

10 + 6

3976 FIDE Album (1956-1958) 1961
3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Sg3#
    • 1...Bc3
      • 2.Sg3#
    • 1...Bg3+
      • 2.Sxg3#
    • 1...Bb4
      • 2.Sg3#
    • 1...Ba5
      • 2.Sg3#
    • 1...Sc3
      • 2.Qb4#
    • 1...Sd4
      • 2.exd4#
    • 1...Sbd6
      • 2.Qb1#
    • 1...Sa7
      • 2.Qb1#
    • 1...Sc7
      • 2.Qb1#
    • 1...Se5
      • 2.Sf6#
  • Tries
    • 1.Qxb5?
      • threat
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qb1#
      • 1...Bg3+
        • 2.Sxg3#
      • 1...Bc3
        • 2.Sg3#
        • 2.Qd3#
        • 2.Qb1#
      • 1...Bb4
        • 2.Sg3#
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qxb4#
      • 1...Se5
        • 2.Sf6#
      • 1...Sd6
        • 2.Qd3#
        • 2.Qb1#
      • 1...Sxh8!
    • 1.c7?
      • threat
        • 2.Qc6#
        • 2.Qb7#
      • 1...Bg3+
        • 2.Sxg3#
      • 1...Sxc7
        • 2.Qb1#
      • 1...Sxh8
        • 2.Qe6#
      • 1...Sc3
        • 2.Qb4#
      • 1...Sd4
        • 2.exd4#
      • 1...Sbd6
        • 2.Qb1#
        • 2.Qc6#
      • 1...Sa7
        • 2.Qb1#
      • 1...Se5
        • 2.Sf6#
      • 1...Sfd6
        • 2.Qc6#
      • 1...Sd8!
  • Keys
    • 1.Qb7!
      • threat
        • 2.c7#
      • 1...Bg3+
        • 2.Sxg3#
      • 1...Sxh8
        • 2.Qe7#
      • 1...Sc3
        • 2.Qb4#
      • 1...Sd4
        • 2.exd4#
      • 1...Sbd6
        • 2.Qb1#
      • 1...Sa7
        • 2.Qb1#
      • 1...Sc7
        • 2.Qb1#
      • 1...Se5
        • 2.Sf6#
      • 1...Sfd6
        • 2.Qe7#
      • 1...Sd8
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::S(G)
    • B(a);CHECK,N_GUARD::S(G),XB(a)
    • S(c);OGATE::QAR(H)
    • S(c);OGATE::R(A)+P(C),XS(c)
    • S(c);OGATE::QAB(H)
    • S(e);SBLOCK::S(G)
  • Tries
    • Try
      • Q(H);XS(c)
      • Threat
        • DUALS(3)
      • Vars
        • B(a);CHECK,N_GUARD::S(G),XB(a)
        • S(e);SBLOCK::S(G)
      • Refutation
        • S(e);XB(J)
    • Try
      • P(I);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);CHECK,N_GUARD::S(G),XB(a)
        • S(c);OGATE,XP(I)::QAB(H)
        • S(e);N_GUARD,XB(J)::QAR2(H)
        • S(c);OGATE::QAR(H)
        • S(c);OGATE::R(A)+P(C),XS(c)
        • S(c);OGATE::QAB(H)
        • S(e);SBLOCK::S(G)
        • S(e);::QAB(H)
      • Refutation
        • S(e);
  • Actual
    • Q(H);
    • Threat
      • QAB(H)+P(I)
    • Vars
      • B(a);CHECK,N_GUARD::S(G),XB(a)
      • S(e);N_GUARD,XB(J)::QAR(H)
      • S(c);OGATE::QAR(H)
      • S(c);OGATE::R(A)+P(C),XS(c)
      • S(c);OGATE::QAB(H)
      • S(e);SBLOCK::S(G)
      • S(e);N_GUARD::QAR(H)
      • S(e);OGATE::QAB(H),XB(f)
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