MESON Chess Problem Database

Problem Display
PID: 158352 (2N5/p4p2/5b2/2pNk1p1/K1Q3B1/2Pp4/n2Br3/8 w - - 0 1)

Shire, David J

British Chess Magazine, 2001

2N5/p4p2/5b2/2pNk1p1/K1Q3B1/2Pp4/n2Br3/8

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc3+
      • 2.Bxc3#
  • Tries
    • 1.Sdb6?
      • threat
        • 2.Sd7#
        • 2.Qd5#
      • 1...Sxc3+
        • 2.Bxc3#
      • 1...Rxd2
        • 2.Sd7#
      • 1...Be7
        • 2.Sd7#
      • 1...Bg7
        • 2.Sd7#
      • 1...Bd8
        • 2.Sd7#
      • 1...Bh8
        • 2.Sd7#
      • 1...Re3
        • 2.Sd7#
      • 1...Re4
        • 2.Sd7#
      • 1...Sb4
        • 2.Sd7#
      • 1...axb6!
    • 1.Sxf6?
      • threat
        • 2.Sd7#
      • 1...Sxc3+
        • 2.Bxc3#
        • 2.Qxc3#
      • 1...Kxf6!
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Qd4#
      • 1...Re4+
        • 2.Sb4#
      • 1...Sxc3+
        • 2.Sxc3#
      • 1...Ke4
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);CHECK,OGATE,XP(B)::B(A),XS(a)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);CHECK,OGATE,XP(B)::B(A),XS(a)
        • R(b);XB(A)::S(F)
        • B(g);::S(F)
        • R(b);::S(F)
        • R(b);P_PINQ(D)::S(F)
        • S(a);::S(F)
      • Refutation
        • P(h);XS(F)
    • Try
      • S(F);XB(g)
      • Threat
        • S(F)
      • Refutation
        • K(e);S_FLIGHT,XS(F)
  • Actual
    • Q(D);XP(d)
    • Threat
      • QAB1(D)
    • Vars
      • R(b);CHECK,SBLOCK::QAR(D)+S(F)
      • S(a);CHECK,XP(B)::QAR(D)+S(F),XS(a)
      • K(e);P-FLIGHT::S(F),XB(g)
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