MESON Chess Problem Database

Problem Display
PID: 179779 (3N4/3Q4/1r1P2P1/1Rp1q3/3k2rp/1B1pR1bb/3P1N2/1K2n3 w - - 0 1)

Rudenko, Valentin Fedorovich

Probleemblad, 1979

3N4/3Q4/1r1P2P1/1Rp1q3/3k2rp/1B1pR1bb/3P1N2/1K2n3

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Se6#
    • 1...Qxd6
      • 2.Se6#
    • 1...Qg7
      • 2.Se6#
    • 1...Qh8
      • 2.Se6#
    • 1...Qg5
      • 2.Se6#
    • 1...Qh5
      • 2.Se6#
    • 1...Qe6
      • 2.Sxe6#
    • 1...Rxb5
      • 2.Sc6#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Rxd6
      • 2.Sc6#
    • 1...Rb7
      • 2.Sc6#
    • 1...Rb8
      • 2.Sc6#
    • 1...Sc2
      • 2.Rxd3#
    • 1...Sg2
      • 2.Rxd3#
    • 1...Sf3
      • 2.Rxd3#
  • Tries
    • 1.Qe6?
      • threat
        • 2.Qc4#
      • 1...Qxe3
        • 2.Qd5#
        • 2.Qxe3#
      • 1...Qxe6
        • 2.Sxe6#
      • 1...Qd5
        • 2.Qxd5#
      • 1...c4
        • 2.Qxc4#
      • 1...Qe4!
    • 1.Qf7?
      • threat
        • 2.Qc4#
      • 1...Qxe3
        • 2.Qd5#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Qe6
        • 2.Sxe6#
      • 1...c4
        • 2.Qxc4#
      • 1...Qe4!
    • 1.Qg7?
      • threat
        • 2.Se6#
      • 1...Rxg6
        • 2.Re4#
      • 1...Re4
        • 2.Rxe4#
      • 1...Rf4
        • 2.Qxe5#
      • 1...Rg5
        • 2.Re4#
      • 1...Rxd6!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qa1#
      • 1...Ra6
        • 2.Rb4#
      • 1...Sc2
        • 2.Rxd3#
      • 1...c4
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 14
  • Sets
    • Q(i);N_GUARD::S(J)
    • Q(i);N_GUARD,P_SPINQ(i),XP(G)::S(J)
    • Q(i);N_GUARD::S(J),XQ(i)
    • R(j);N_GUARD,P_PINB(D),XR(F)::S(J)
    • R(j);N_GUARD::S(J),XR(j)
    • R(j);N_GUARD,P_SPINR(j),XP(G)::S(J)
    • R(j);N_GUARD::S(J)
    • S(a);N_GUARD::R1(E),XP(b)
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • Q(i);XQ(I)::S(J),XQ(i)
        • Q(i);N_GUARD::QAR1(I),XQ(i)
        • P(h);::QAR1(I),XP(h)
      • Refutation
        • Q(i);
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • Q(i);N_GUARD,XR(E)::QAR1(I)
        • Q(i);N_GUARD::QAR1(I),XQ(i)
        • Q(i);N_GUARD::S(J),XQ(i)
        • P(h);::QAR1(I),XP(h)
      • Refutation
        • Q(i);
    • Try
      • Q(I);P_PINQ(i)
      • Threat
        • S(J)
      • Vars
        • R(f);N_GUARD,XP(H)::R1(E)
        • R(f);N_GUARD::R1(E),XR(f)
        • R(f);S_CUTB(c)::QAB1(I),XQ(i)
        • R(f);N_GUARD::R1(E)
      • Refutation
        • R(j);XP(G)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)
    • Vars
      • R(j);N_GUARD,P_SPINP(h)::R(F)
      • S(a);N_GUARD::R1(E),XP(b)
      • P(h);P_SPINR(j)::S(J)
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