MESON Chess Problem Database

Problem Display
PID: 55446 (3Q3b/K3p3/Np4b1/8/B1p1R1r1/2k5/ppN1R2r/1n3q2 w - - 0 1)

Mansfield, Comins

4th HM., 64 Shakhmatnoe obozrenie, 1974

3Q3b/K3p3/Np4b1/8/B1p1R1r1/2k5/ppN1R2r/1n3q2

#2

7 + 12

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.R2e3#
    • 1...Qh1
      • 2.R2e3#
    • 1...Qf5
      • 2.R2e3#
    • 1...Qf6
      • 2.R2e3#
    • 1...Qf7
      • 2.R2e3#
    • 1...Qf8
      • 2.R2e3#
    • 1...Bh5
      • 2.R4e3#
    • 1...Bf7
      • 2.R4e3#
    • 1...Be8
      • 2.R4e3#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Sd2
      • 2.Qxd2#
    • 1...Sa3
      • 2.Qd2#
  • Tries
    • 1.Qd3+?
      • 1...Kxd3
        • 2.R4e3#
      • 1...cxd3!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Sb5#
      • 1...Sxa3
        • 2.Qd2#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Qf5
        • 2.R2e3#
      • 1...Rh5
        • 2.Rc2#
      • 1...Rg5
        • 2.Rxc4#
      • 1...Be8
        • 2.R4e3#
      • 1...b5
        • 2.Sxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::R(B)
    • B(j);N_GUARD::R(D)
    • B(l);N_GUARD::QAB1(G),XB(l)
    • S(a);N_GUARD::QAB1(G),XS(a)
    • S(a);N_GUARD::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);P-FLIGHT,XQ(G)::R1(D)
      • Refutation
        • P(g);XQ(G)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • S(a);N_GUARD,XS(A)::QAB1(G)
      • B(l);N_GUARD::QAB1(G),XB(l)
      • Q(b);N_GUARD::R(B)
      • R(e);N_GUARD::R1(B)
      • R(h);N_GUARD::R1(D),XP(g)
      • B(j);N_GUARD::R(D)
      • P(i);::S(A),XP(i)
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