MESON Chess Problem Database

Problem Display
PID: 88802 (B6r/1N1pPp2/3P1p2/1P1kN3/3p1Q2/1P6/p1r5/Kb6 w - - 0 1)

Lukyanov, Valentin Volodimirovich

Nagnibida, Mykola Ivanovich

Problemista, 1972

B6r/1N1pPp2/3P1p2/1P1kN3/3p1Q2/1P6/p1r5/Kb6

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Ke6
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sc4#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Sg6#
      • 1...Kxe4!
    • 1.e8Q?
      • threat
        • 2.Qxf7#
        • 2.Qf3#
      • 1...fxe5
        • 2.Qfxe5#
        • 2.Qexf7#
        • 2.Qexe5#
      • 1...Rc1
        • 2.Qxf7#
      • 1...Rb2
        • 2.Qxf7#
      • 1...Rd2
        • 2.Qxf7#
      • 1...Re2
        • 2.Qxf7#
      • 1...Rf2
        • 2.Qxf7#
      • 1...Rg2
        • 2.Qxf7#
      • 1...Rch2
        • 2.Qxf7#
      • 1...Rc3
        • 2.Qxf7#
      • 1...Rc4
        • 2.Qxf7#
        • 2.bxc4#
      • 1...Rc5
        • 2.Qxf7#
      • 1...Rc6
        • 2.Qxf7#
      • 1...Rc7
        • 2.Qxf7#
      • 1...Rc8
        • 2.Qxf7#
      • 1...Rh3
        • 2.Qxf7#
      • 1...Rh4
        • 2.Qxf7#
      • 1...Rh7
        • 2.Qf3#
      • 1...Rf8
        • 2.Qf3#
      • 1...d3
        • 2.Qxf7#
      • 1...Rxe8!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qf5#
      • 1...Ke6
        • 2.Qe4#
      • 1...Re2
        • 2.Sd8#
      • 1...Rf2
        • 2.Sd8#
      • 1...Rh5
        • 2.Sbc5#
      • 1...f5
        • 2.Qe5#
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(e);S_FLIGHT,XQ(C)
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::QAB(H),XP(h)
        • R(i);::QAB(H),XP(h)
        • R(i);::QAB(C)
        • P(d);::QAB(H),XP(h)
      • Refutation
        • R(i);XQ(H)
  • Actual
    • S(E);
    • Threat
      • QAR2(C)
    • Vars
      • K(e);S_FLIGHT::QAR2(C)
      • R(c);N_GUARD::B(I)+S(G)
      • R(i);N_GUARD::B(I)+S(G)
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