MESON Chess Problem Database

Problem Display
PID: 10192 (q7/B1bP1NR1/4R3/p7/2B5/Q1P2kPP/6p1/K2b3n w - - 0 1)

Mansfield, Comins

1/2 Prize, The Sun-Herald, 1961

q7/B1bP1NR1/4R3/p7/2B5/Q1P2kPP/6p1/K2b3n

#2

11 + 7

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Bxd5#
    • 1...Qb8
      • 2.Bd5#
    • 1...Qc8
      • 2.Bd5#
    • 1...Qd8
      • 2.Bd5#
    • 1...Qe8
      • 2.Bd5#
    • 1...Qf8
      • 2.Bd5#
    • 1...Qg8
      • 2.Bd5#
    • 1...Qh8
      • 2.Bd5#
    • 1...Bc2
      • 2.Be2#
    • 1...Be2
      • 2.Bxe2#
    • 1...Bb3
      • 2.Be2#
    • 1...Ba4
      • 2.Be2#
    • 1...Sf2
      • 2.Re3#
  • Tries
    • 1.Rf6+?
      • 1...Bf4
        • 2.Rxf4#
      • 1...Ke4!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qxa8#
      • 1...Qxa7
        • 2.Sd6#
      • 1...Qxf8
        • 2.Bd5#
      • 1...Bxg3
        • 2.Sg5#
      • 1...Sxg3
        • 2.Sg5#
      • 1...Bb6
        • 2.Sd8#
      • 1...Qe4
        • 2.Se5#
      • 1...Qd5
        • 2.Bxd5#
      • 1...Qc6
        • 2.Sd6#
      • 1...Qb7
        • 2.Sd6#
      • 1...Qb8
        • 2.Bd5#
      • 1...Qc8
        • 2.Bd5#
      • 1...Qd8
        • 2.Bd5#
      • 1...Qe8
        • 2.Bd5#
      • 1...Bc2
        • 2.Be2#
      • 1...Ba4
        • 2.Be2#
      • 1...Bb8
        • 2.Sd6#
      • 1...Bd8
        • 2.Sxd8#
      • 1...Sf2
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • Q(g);N_GUARD::B(F),XQ(g)
    • Q(g);N_GUARD::B(F)
    • B(a);N_GUARD::B(F)
    • B(a);N_GUARD::B(F),XB(a)
    • S(b);SBLOCK::R1(G)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::R1(G),XB(f)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB(B),XQ(g)
    • Vars
      • Q(g);N_GUARD,XB(H)::QAR(B)+S(J)
      • Q(g);N_GUARD,XQ(B)::B(F)
      • B(f);SBLOCK,XP(D)::QAR(B)+S(J),DCHECK
      • S(b);SBLOCK,XP(D)::QAR(B)+S(J),DCHECK
      • B(f);N_GUARD::QAR(B)+S(J)
      • Q(g);SBLOCK::QAR(B)+S(J),DCHECK
      • Q(g);N_GUARD::B(F),XQ(g)
      • Q(g);N_GUARD::QAR(B)+S(J)
      • Q(g);N_GUARD::B(F)
      • B(a);N_GUARD::B(F)
      • B(f);S_CUTQ(g)::QAR(B)+S(J)
      • B(f);N_GUARD::QAR(B)+S(J),XB(f)
      • S(b);SBLOCK::R1(G)
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