MESON Chess Problem Database

Problem Display
PID: 55327 (3N1B1n/1q3nQK/pPBP4/p1kN1Rp1/2p1p3/3R4/5b2/8 w - - 0 1)

Mansfield, Comins

2nd HM., Magyar Sakkelet, 1973

3N1B1n/1q3nQK/pPBP4/p1kN1Rp1/2p1p3/3R4/5b2/8

#2

10 + 10

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qd4#
    • 1...Bg3
      • 2.Qd4#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bh4
      • 2.Qd4#
    • 1...Se5
      • 2.d7#
    • 1...Sh6
      • 2.d7#
    • 1...cxd3
      • 2.Qc3#
    • 1...c3
      • 2.Rxc3#
      • 2.Qxc3#
    • 1...e3
      • 2.Qd4#
  • Tries
    • 1.Se3+?
      • 1...Kb4
        • 2.Sc2#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Kxb6
        • 2.Qd4#
      • 1...Se5!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qa3#
      • 1...Se5+
        • 2.d7#
      • 1...Sxd6+
        • 2.Sc7#
      • 1...Sh6+
        • 2.d7#
      • 1...Sxd8+
        • 2.Se7#
      • 1...Qxc6
        • 2.Se6#
      • 1...Qxb6
        • 2.Qxb6#
      • 1...cxd3
        • 2.Qc3#
      • 1...exd3
        • 2.Qxf2#
      • 1...c3
        • 2.Qxc3#
      • 1...Be1
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAB1(G)
    • B(a);N_GUARD::QAB1(G),XB(a)
    • S(i);N_GUARD,P_PINQ(G)::B(J)+P(F)
    • P(b);OGATEB,XR(A)::QAR2(G)
    • P(c);S_CUTB(a)::QAB1(G)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);S_FLIGHT,XP(D)::QAB(G)
      • Refutation
        • S(i);P_PINQ(G),P_SPINS(i)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • S(i);CHECK,N_GUARD::B(J)+P(F)
      • S(i);CHECK,N_GUARD,P_SPINS(i),XP(F)::R(C)+S(B)
      • S(i);CHECK,N_GUARD,XS(I)::R(C)+S(B)
      • Q(h);SBLOCK,XB(E)::S(I)
      • Q(h);OGATE,XP(D)::QAB1(G),XQ(h)
      • P(b);OGATEB,XR(A)::QAR2(G)
      • P(c);N_GUARD,XR(A)::QAB(G),XB(a)
      • P(b);OGATEB::QAR2(G),XP(b)
      • B(a);N_GUARD::QAB1(G)
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