MESON Chess Problem Database

Problem Display
PID: 149167 (8/4KR2/4PN2/2pPk1p1/7r/4P2B/8/1b3Q2 w - - 0 1)

Agostini, Valerio

Best Problems, 2010

8/4KR2/4PN2/2pPk1p1/7r/4P2B/8/1b3Q2

#2

8 + 5

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qf5#
    • 1...Ba2
      • 2.Qf5#
    • 1...Be4
      • 2.Qa1#
    • 1...Bf5
      • 2.Qxf5#
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Qxb1?
      • threat
        • 2.Qf5#
        • 2.Qb8#
      • 1...Rxh3
        • 2.Qe4#
      • 1...Rb4
        • 2.Qf5#
      • 1...Re4
        • 2.Qxe4#
        • 2.Qb8#
      • 1...Rf4
        • 2.Qb8#
      • 1...Rh8
        • 2.Qe4#
        • 2.Qf5#
        • 2.Qa1#
        • 2.Qb2#
      • 1...g4
        • 2.Qe4#
      • 1...Rg4!
    • 1.Qh1?
      • threat
        • 2.Sd7#
      • 1...Be4
        • 2.Qa1#
      • 1...Re4!
    • 1.Qf3?
      • threat
        • 2.Sd7#
      • 1...Re4
        • 2.Qf5#
      • 1...Be4!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Sd7#
      • 1...Re4
        • 2.Qxg5#
      • 1...Be4
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(b);S_CUTB(a)::QAR1(A)
    • B(a);N_GUARD::QAR1(A)
    • B(a);OGATE::QAB(A)
    • B(a);N_GUARD::QAR1(A),XB(a)
    • P(e);N_GUARD,S_CUTR(b)::QAB1(A)
  • Tries
    • Try
      • Q(A);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);N_GUARD,XB(C)::QAR1(A)
        • R(b);::QAR1(A)
        • R(b);::QAB(A)
        • P(e);S_CUTR(b)::QAR1(A)
      • Refutation
        • R(b);
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • B(a);OGATE::QAB(A)
      • Refutation
        • R(b);
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • R(b);S_CUTB(a)::QAR1(A)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Threat
      • S(F)
    • Vars
      • R(b);S_CUTB(a)::QAR2(A),XP(e)
      • B(a);S_CUTR(b)::QAB(A)
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