MESON Chess Problem Database

Problem Display
PID: 10277 (n7/Q2P4/2k1N3/b1PqP3/P2p4/5R2/6R1/6KB w - - 0 1)

Mansfield, Comins

Comm., Magyar Sakkelet, 1963

n7/Q2P4/2k1N3/b1PqP3/P2p4/5R2/6R1/6KB

#2

10 + 5

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Sd8#
    • 1...Bd2
      • 2.Sd8#
    • 1...Bc3
      • 2.Sd8#
    • 1...Bb4
      • 2.Sd8#
    • 1...Bd8
      • 2.Sxd8#
    • 1...Sb6
      • 2.Qc7#
  • Tries
    • 1.Rf7?
      • threat
        • 2.Qxa8#
      • 1...Qxg2+
        • 2.Bxg2#
      • 1...Qxe6
        • 2.Rg6#
      • 1...Qxc5
        • 2.Rc2#
      • 1...Qxd7
        • 2.Qxd7#
      • 1...Sb6
        • 2.Qc7#
      • 1...Sc7
        • 2.Sd8#
      • 1...Qb3!
  • Keys
    • 1.Rg7!
      • threat
        • 2.Qxa8#
      • 1...Qxe6
        • 2.Rf6#
      • 1...Qxc5
        • 2.Rc3#
      • 1...Qxd7
        • 2.Qxd7#
      • 1...Qb3
        • 2.Rxb3#
      • 1...Sb6
        • 2.Qc7#
      • 1...Sc7
        • 2.Sd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD::S(H)
    • B(b);N_GUARD::S(H),XB(b)
    • S(e);N_GUARD,S_CUTB(b)::QAR1(I)
  • Tries
    • Try
      • R(D);
      • Threat
        • QAB(I),XS(e)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XR(C)::B(B),XQ(c)
        • Q(c);OGATEB,XS(H)::B(B)+R(C)
        • Q(c);OGATEB,XP(F)::B(B)+R(C)
        • Q(c);OGATE,XP(J)::QAB1(I),XQ(c)
        • S(e);N_GUARD,S_CUTB(b)::QAR1(I)
        • S(e);S_CUTB(b)::S(H)
      • Refutation
        • Q(c);
  • Actual
    • R(C);
    • Threat
      • QAB(I),XS(e)
    • Vars
      • Q(c);OGATEB,XS(H)::B(B)+R(D)
      • Q(c);OGATEB,XP(F)::B(B)+R(D)
      • Q(c);OGATE,XP(J)::QAB1(I),XQ(c)
      • Q(c);OGATEB::B(B)+R(D),XQ(c)
      • S(e);N_GUARD,S_CUTB(b)::QAR1(I)
      • S(e);S_CUTB(b)::S(H)
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