MESON Chess Problem Database

Problem Display
PID: 207445 (qn2B3/8/b2Q3b/r3pp2/3Nkp1R/6pK/3Pp3/B3N3 w - - 0 1)

Golubenko, Vladimir Aleksandrovich

The Problemist, 1984

qn2B3/8/b2Q3b/r3pp2/3Nkp1R/6pK/3Pp3/B3N3

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...exd4
      • 2.Qxd4#
  • Tries
    • 1.Sxe2?
      • threat
        • 2.Sc3#
        • 2.Sxg3#
      • 1...Qd5
        • 2.Sxg3#
      • 1...Qc6
        • 2.Sxg3#
      • 1...Ra3
        • 2.Qxe5#
      • 1...Rc5
        • 2.Sxg3#
      • 1...Rd5
        • 2.Sxg3#
      • 1...g2
        • 2.Sc3#
        • 2.Sg3#
      • 1...Bxe2!
    • 1.Sb5?
      • threat
        • 2.Sc3#
        • 2.Qxe5#
        • 2.Qd3#
      • 1...Rxa1
        • 2.Sc3#
        • 2.Qd3#
      • 1...Rxb5
        • 2.Qd3#
      • 1...Bxb5
        • 2.Qxe5#
      • 1...Qc6
        • 2.Qxe5#
        • 2.Qd3#
      • 1...Ra3
        • 2.Qxe5#
      • 1...Bg7
        • 2.Sc3#
        • 2.Qd3#
      • 1...Sc6
        • 2.Sc3#
        • 2.Qd3#
      • 1...Sd7
        • 2.Sc3#
        • 2.Qd3#
      • 1...Qd5!
    • 1.Bg6?
      • threat
        • 2.Bxf5#
      • 1...exd4
        • 2.Qxd4#
      • 1...Bc8!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Sxg3#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Ra3
        • 2.Qxe5#
      • 1...Bc8
        • 2.Qd3#
      • 1...g2
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(f);OGATE,XS(E)::QAR1(G),XP(f)
  • Tries
    • Try
      • S(E);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • Q(j);::S(E),XP(b)
        • R(e);N_GUARD::QAR1(G),XP(f)
        • R(e);::S(E),XP(b)
      • Refutation
        • B(h);XS(E)
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • R(e);XS(E)::QAB1(G)
        • B(h);XS(E)::QAR1(G),XP(f)
        • R(e);::QAR1(G),XP(f)
      • Refutation
        • Q(j);
    • Try
      • B(H);
      • Threat
        • B(H),XP(g)
      • Vars
        • P(f);OGATE,XS(E)::QAR1(G),XP(f)
      • Refutation
        • B(h);
  • Actual
    • S(E);XP(g)
    • Threat
      • S(E),XP(b)
    • Vars
      • K(c);N_SPINP(d),OGATEB,S_FLIGHT,XS(E)::QAB1(G)
      • R(e);N_GUARD::QAR1(G),XP(f)
      • B(h);N_GUARD,P_PINS(E)::QAB1(G)
      • P(b);::S(E)
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