MESON Chess Problem Database

Problem Display
PID: 117 (5R2/5N1K/3P3p/3P1k1B/4Nr1n/2P2q2/6PB/1Qb2R2 w - - 0 1)

Mansfield, Comins

The Observer, 1930

(First published on Sun Jul 6 1930)

5R2/5N1K/3P3p/3P1k1B/4Nr1n/2P2q2/6PB/1Qb2R2

#2

12 + 6

3202 Complete Mansfield/I 1996
15239 Valois Notebooks 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc3
      • 2.g4#
    • 1...Qe3
      • 2.g4#
    • 1...Rg4
      • 2.Se5#
      • 2.Sfg5#
      • 2.Sxh6#
      • 2.Sd8#
      • 2.Sh8#
  • Tries
    • 1.Bg6+?
      • 1...Kg4
        • 2.Se5#
        • 2.Sxh6#
      • 1...Sxg6!
    • 1.g4+?
      • 1...Rxg4
        • 2.Se5#
        • 2.Sfg5#
        • 2.Sxh6#
        • 2.Sd8#
        • 2.Sh8#
      • 1...Qxg4!
  • Keys
    • 1.Kg7!
      • threat
        • 2.Sg3#
      • 1...Qg4+
        • 2.Seg5#
      • 1...Qxc3+
        • 2.Sxc3#
      • 1...Qg3+
        • 2.Sxg3#
      • 1...Rg4+
        • 2.Sfg5#
      • 1...Qxe4
        • 2.g4#
      • 1...Qxh5
        • 2.Sf6#
      • 1...Rxe4
        • 2.g4#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_GUARD,P_SPINR(c),XP(E)::P(C)
    • Q(b);N_GUARD,P_SPINR(c)::P(C)
  • Tries
    • Try
      • B(H);CHECK
      • Refutation
        • S(d);XB(H)
    • Try
      • P(C);CHECK
      • Refutation
        • Q(b);P_SPINR(c),XP(C)
  • Actual
    • K(K);P-FLIGHT
    • Threat
      • QAB(A)+S(F),DCHECK
    • Vars
      • Q(b);CHECK,N_GUARD,P_SPINR(c)::QAB(A)+S(F)
      • Q(b);CHECK,P_SPINR(c),XP(E)::QAB(A)+S(F),XQ(b)
      • Q(b);CHECK,P_SPINR(c)::QAB(A)+S(F),DCHECK,XQ(b)
      • R(c);CHECK,P_SPINQ(b)::R(L)+S(J)
      • Q(b);N_GUARD,P_SPINQ(b),P_SPINR(c),XS(F)::P(C)
      • Q(b);N_GUARD,P_SPINR(c),XB(H)::QAB(A)+S(F)
      • R(c);N_GUARD,P_SPINQ(b),P_SPINR(c),XS(F)::P(C)
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