MESON Chess Problem Database

Problem Display
PID: 10263 (Q7/5p2/3p1n2/3P2R1/2N3P1/1p1B1kP1/2pp2R1/5nK1 w - - 0 1)

Mansfield, Comins

Evening News, 1963

Q7/5p2/3p1n2/3P2R1/2N3P1/1p1B1kP1/2pp2R1/5nK1

#2

9 + 8

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Sxd2#
    • 1...Sxg3
      • 2.Rf2#
    • 1...Se4
      • 2.Be2#
    • 1...Sxg4
      • 2.Rf5#
    • 1...Sxd5
      • 2.Qxd5#
  • Tries
    • 1.Se5+?
      • 1...Ke3
        • 2.Qa7#
      • 1...dxe5!
    • 1.Qa7?
      • threat
        • 2.Qf2#
      • 1...Sxg4
        • 2.Rf5#
      • 1...Se3
        • 2.Sxd2#
        • 2.Qxe3#
      • 1...Se4
        • 2.Be2#
      • 1...d1S!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qxf6#
        • 2.Qxf1#
      • 1...Sxg3
        • 2.Rf2#
      • 1...Sxg4
        • 2.Rf5#
      • 1...Sxd5
        • 2.Qxf1#
      • 1...c1Q
        • 2.Qxf6#
      • 1...c1S
        • 2.Qxf6#
      • 1...c1B
        • 2.Qxf6#
      • 1...c1R
        • 2.Qxf6#
      • 1...d1Q
        • 2.Qxf6#
      • 1...d1S
        • 2.Qxf6#
      • 1...d1B
        • 2.Qxf6#
      • 1...d1R
        • 2.Qxf6#
      • 1...Sh2
        • 2.Qxf6#
      • 1...Se3
        • 2.Sxd2#
      • 1...Se4
        • 2.Be2#
      • 1...Sh5
        • 2.Qxf1#
      • 1...Sd7
        • 2.Qxf1#
      • 1...Sh7
        • 2.Qxf1#
      • 1...Se8
        • 2.Qxf1#
      • 1...Sg8
        • 2.Qxf1#
      • 1...b2
        • 2.Qxf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::S(E),XP(c)
    • S(a);SBLOCK,XP(D)::R1(B)
    • S(g);SBLOCK::B(C)
    • S(g);SBLOCK,XP(F)::R(H)
    • S(g);OGATE,P_SPINS(g),XP(G)::QAB(I),XS(g)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB(I)
      • Refutation
        • P(f);XS(E)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • S(g);SBLOCK,XP(F)::R(H)
        • S(g);SBLOCK::B(C)
      • Refutation
        • P(c);
  • Actual
    • Q(I);
    • Threat
      • DUALS(2)
    • Vars
      • S(a);SBLOCK,XP(D)::R1(B)
      • S(g);SBLOCK,XP(F)::R(H)
      • S(g);XP(G)::QAR2(I),XS(a)
      • P(b);::QAR(I),XS(g)
      • P(c);::QAR(I),XS(g)
      • S(a);::QAR(I),XS(g)
      • S(a);N_GUARD,SBLOCK::S(E),XP(c)
      • S(g);SBLOCK::B(C)
      • S(g);::QAR2(I),XS(a)
      • P(d);::QAR2(I),XS(a)
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