MESON Chess Problem Database

Problem Display
PID: 18222 (7K/1ppp4/2kp4/4R2Q/P1NrP3/8/8/b1R3BB w - - 0 1)

Mansfield, Comins

L'Italia Scacchistica, 1954

7K/1ppp4/2kp4/4R2Q/P1NrP3/8/8/b1R3BB

#2

9 + 7

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sa5#
    • 1...Rd2
      • 2.Sa5#
    • 1...Rd3
      • 2.Sa5#
    • 1...Rxc4
      • 2.Rxc4#
    • 1...Rxe4
      • 2.Sb2#
      • 2.Sa5#
    • 1...Rd5
      • 2.Sa5#
      • 2.exd5#
    • 1...b6
      • 2.Sa5#
  • Tries
    • 1.Sb2+?
      • 1...Rc4
        • 2.Rxc4#
      • 1...Kb6!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qb5#
      • 1...Rd1+
        • 2.Se5#
      • 1...Rd2+
        • 2.Se5#
      • 1...Rd3+
        • 2.Se5#
      • 1...Rxc4+
        • 2.e5#
      • 1...Rxe4+
        • 2.Sb2#
      • 1...Rd5+
        • 2.Se5#
      • 1...b5
        • 2.Qxb5#
      • 1...b6
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);P_PINR(G)::R(A)+S(E),DCHECK
    • R(b);OGATE,P_PINR(G),P_SPINR(b),XS(E)::R(A),XR(b)
    • P(e);SBLOCK::R(A)+S(E),DCHECK
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::R(A),XR(b)
      • Refutation
        • K(c);P-FLIGHT,P_SPINR(b)
  • Actual
    • R(G);P_PINP(d)
    • Threat
      • QAB1(H)
    • Vars
      • R(b);CHECK::R(A)+S(E),DCHECK
      • R(b);CHECK,N_GUARD,P_SPINR(b),XS(E)::B(C)+P(F)
      • R(b);CHECK,N_GUARD,P_SPINR(b),XP(F)::R(A)+S(E)
      • P(e);::QAB1(H),XP(e)
      • P(e);SBLOCK::R(A)+S(E),DCHECK
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