MESON Chess Problem Database

Problem Display
PID: 180171 (Qb4K1/R1p2p2/4pkN1/5Pp1/6P1/2N5/8/7b w - - 0 1)

Cioflanca, Mihalu

Sachmatija, 2015

Qb4K1/R1p2p2/4pkN1/5Pp1/6P1/2N5/8/7b

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Sxe4#
    • 1...Bxa7
      • 2.Qd8#
    • 1...c5
      • 2.Rxf7#
    • 1...c6
      • 2.Rxf7#
  • Tries
    • 1.Sd5+?
      • 1...exd5
        • 2.Qc6#
      • 1...Bxd5!
    • 1.Qxh1?
      • threat
        • 2.Se4#
        • 2.Qh8#
      • 1...exf5
        • 2.Qc6#
      • 1...fxg6!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qe5#
      • 1...Bxe4
        • 2.Sxe4#
      • 1...exf5
        • 2.Qxf5#
      • 1...fxg6
        • 2.Qxe6#
      • 1...e5
        • 2.Sd5#
        • 2.Qxe5#
      • 1...c5
        • 2.Rxf7#
      • 1...c6
        • 2.Rxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(A),XB(a)
    • B(g);OGATE,XR(E)::QAB(F)
    • P(e);OGATE::R1(E),XP(f)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • P(c);S_CUTB(a),XS(A)::QAR(F)
      • Refutation
        • B(a);XS(A)
    • Try
      • Q(F);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB,XP(C)::QAR(F)
      • Refutation
        • P(f);XS(D)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • B(a);XQ(F)::S(A),XB(a)
      • P(c);OGATE,XP(C)::QAR1(F),XP(c)
      • P(f);N_GUARD,XS(D)::QAR1(F),XP(c)
      • P(e);OGATE::R1(E),XP(f)
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