MESON Chess Problem Database

Problem Display
PID: 268280 (3R4/4p3/3ppPBq/R2N1n2/nKpk4/2p4b/4Q2b/B7 w - - 0 1)

Eland, R

Probleemblad, 1986

3R4/4p3/3ppPBq/R2N1n2/nKpk4/2p4b/4Q2b/B7

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qxc4#
    • 1...Sb6
      • 2.Bxc3#
    • 1...Sh4
      • 2.Qe4#
    • 1...Sg7
      • 2.Qe4#
    • 1...e5
      • 2.Qxc4#
  • Tries
    • 1.Sxe7?
      • threat
        • 2.Sc6#
      • 1...Sxe7
        • 2.Qe4#
      • 1...Qe3
        • 2.Qxc4#
      • 1...Sc5
        • 2.Bxc3#
      • 1...Bg2!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Sxe6#
      • 1...Qe3
        • 2.Qxc4#
      • 1...Sc5
        • 2.Bxc3#
      • 1...Se3
        • 2.Qd2#
      • 1...Sg3
        • 2.Qe5#
      • 1...Sh4
        • 2.Qe4#
      • 1...Sg7
        • 2.Qe4#
      • 1...e5
        • 2.Se6#
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(a);SBLOCK::QAR1(B),XP(e)
    • S(d);N_GUARD::B(A),XP(b)
    • S(g);::QAR1(B)
    • P(i);SBLOCK::QAR1(B),XP(e)
  • Tries
    • Try
      • S(E);XP(k)
      • Threat
        • S(E)
      • Vars
        • S(g);XS(E)::QAR1(B)
        • Q(j);SBLOCK::QAR1(B),XP(e)
        • S(d);N_GUARD::B(A),XP(b)
      • Refutation
        • B(c);
  • Actual
    • S(E);
    • Threat
      • S(E),XP(i)
    • Vars
      • Q(j);SBLOCK::QAR1(B),XP(e)
      • S(d);N_GUARD::B(A),XP(b)
      • S(g);S_CUTQ(j)::QAR2(B)
      • S(g);S_CUTB(a)::QAB1(B)
      • S(g);::QAR1(B)
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