MESON Chess Problem Database

Problem Display
PID: 66802 (1Kb5/8/p3pNR1/4kP2/6pr/3QPPp1/4n3/8 w - - 0 1)

Udartsev, Valentin Filipovich

1st Prize, Tuvinskaya Pravda, 1982

1Kb5/8/p3pNR1/4kP2/6pr/3QPPp1/4n3/8

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Sxg4#
    • 1...Rh2
      • 2.Sxg4#
    • 1...Rh3
      • 2.Sxg4#
    • 1...Rh5
      • 2.Sxg4#
    • 1...Rh6
      • 2.Sxg4#
    • 1...Rh7
      • 2.Sxg4#
    • 1...Rh8
      • 2.Sxg4#
    • 1...Bb7
      • 2.Sd7#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Sc1
      • 2.f4#
    • 1...Sg1
      • 2.f4#
    • 1...Sc3
      • 2.f4#
    • 1...exf5
      • 2.Qd5#
  • Tries
    • 1.Se8?
      • threat
        • 2.Qe4#
      • 1...exf5
        • 2.Qd6#
      • 1...Bb7
        • 2.Rxe6#
      • 1...Sc3
        • 2.f4#
      • 1...gxf3!
    • 1.Qd4+?
      • 1...Kxf5
        • 2.Qe4#
      • 1...Sxd4!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qc5#
      • 1...Kxf5
        • 2.Qe4#
      • 1...Kd6
        • 2.Qc7#
      • 1...exf5
        • 2.Qd5#
      • 1...Bb7
        • 2.Qxe6#
      • 1...Sc3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(d);N_GUARD::S(E),XP(c)
    • B(h);N_GUARD::S(E)
    • B(h);N_GUARD::S(E),XB(h)
    • S(a);N_GUARD::P(C)
    • P(g);N_GUARD,SBLOCK,XP(D)::QAR1(A)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(A)
      • Vars
        • P(g);SBLOCK,XP(D)::QAB1(A)
        • B(h);N_GUARD::R1(F),XP(g)
        • S(a);N_GUARD::P(C)
      • Refutation
        • P(c);XP(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(D)::QAB1(A)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(e);P-FLIGHT,XP(D)::QAB1(A)
      • K(e);S_FLIGHT::QAB1(A)
      • P(g);N_GUARD,SBLOCK,XP(D)::QAR1(A)
      • B(h);N_GUARD::QAR1(A),XP(g)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
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