MESON Chess Problem Database

Problem Display
PID: 160419 (8/p3Q2p/r3P3/2P1k1p1/1P1pPp2/p2p1p1P/K2NNn1r/b3R1Bb w - - 0 1)

Shire, David J

HM., British Chess Magazine, 2007-2009

8/p3Q2p/r3P3/2P1k1p1/1P1pPp2/p2p1p1P/K2NNn1r/b3R1Bb

#2

11 + 14

15 British Chess Magazine 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6
      • 2.Qxg5#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Sc4#
      • 1...Sxh3
        • 2.Sxd3#
      • 1...Sd1
        • 2.Sxd3#
      • 1...Sg4
        • 2.Sxd3#
      • 1...Sxe4!
    • 1.Sxf4?
      • threat
        • 2.Qxg5#
      • 1...Kxf4
        • 2.Bxh2#
      • 1...Sxh3
        • 2.Sxd3#
      • 1...gxf4
        • 2.Sc4#
      • 1...g4
        • 2.Qg5#
      • 1...h6
        • 2.Sg6#
      • 1...Rg2!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Qg7#
      • 1...Kxd4
        • 2.Qf6#
        • 2.Qg7#
      • 1...Rxe6
        • 2.Sc6#
      • 1...Bxd4
        • 2.Sc4#
      • 1...Sxe4
        • 2.Qxg5#
      • 1...Sg4
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(l);P_SPINR(l),SBLOCK,XP(J)::QAR2(K),XP(k)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(D)
      • Vars
        • S(c);N_GUARD,P_PINS(D),XP(F)::S(E),XP(f)
        • S(c);N_GUARD,P_PINS(D)::S(E),XP(f)
      • Refutation
        • S(c);P_PINS(D),P_SPINS(c),XP(H)
    • Try
      • S(E);XP(i)
      • Threat
        • QAR2(K),XP(k)
      • Vars
        • K(j);OGATEB,S_FLIGHT,XS(E)::B(B),XR(d)
        • S(c);N_GUARD,P_PINS(D),XP(F)::S(E),XP(f)
        • P(k);SBLOCK,XS(E)::S(D)
        • P(k);::QAR2(K)
        • P(n);N_GUARD::S(E)
      • Refutation
        • R(d);
  • Actual
    • S(E);XP(h)
    • Threat
      • QAB(K)
    • Vars
      • R(l);N_GUARD,P_SPINR(l),XP(J)::S(E)
      • B(a);SBLOCK,XS(E)::S(D)
      • S(c);P_PINS(D),P_SPINS(c),XP(H)::QAR2(K),XP(k)
      • S(c);P_PINS(D)::QAR2(K),XP(k)
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