MESON Chess Problem Database

Problem Display
PID: 42051 (2rr4/8/4Q1n1/4np2/R1NNkP2/2q2pK1/2P2P2/b2R4 w - - 0 1)

Rudenko, Valentin Fedorovich

Presledovanie Temi, 1983

2rr4/8/4Q1n1/4np2/R1NNkP2/2q2pK1/2P2P2/b2R4

#2

9 + 9

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Sd2#
    • 1...Qd2
      • 2.Sxd2#
    • 1...Qxd4
      • 2.Sd2#
    • 1...Qa3
      • 2.Sd2#
    • 1...Qb3
      • 2.Sd2#
    • 1...Rxd4
      • 2.Sd6#
    • 1...Rd5
      • 2.Qxf5#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Re8
      • 2.Sd6#
    • 1...Rf8
      • 2.Sd6#
    • 1...Rg8
      • 2.Sd6#
    • 1...Rh8
      • 2.Sd6#
    • 1...Sxf4
      • 2.Qxe5#
    • 1...Sh4
      • 2.Qxe5#
    • 1...Se7
      • 2.Qxe5#
    • 1...Sf8
      • 2.Qxe5#
    • 1...Sh8
      • 2.Qxe5#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qxf5#
      • 1...Rf8
        • 2.Qd5#
      • 1...Sh4
        • 2.Qxe5#
      • 1...Se7
        • 2.Qxe5#
      • 1...Qxe3!
    • 1.Sb3?
      • threat
        • 2.Scd2#
        • 2.Sd6#
      • 1...Qxc2
        • 2.Sd6#
      • 1...Qxc4
        • 2.Re1#
      • 1...Rxc4
        • 2.Sc5#
      • 1...Qd2
        • 2.Scxd2#
        • 2.Sd6#
      • 1...Qd4
        • 2.Scd2#
      • 1...Rd2
        • 2.Scxd2#
        • 2.Sd6#
      • 1...Rd4
        • 2.Sd6#
      • 1...Rd6
        • 2.Scd2#
        • 2.Sxd6#
      • 1...Qb4!
    • 1.Sc6?
      • threat
        • 2.Sd2#
        • 2.Sd6#
      • 1...Qxc2
        • 2.Sd6#
      • 1...Qxc4
        • 2.Re1#
      • 1...Qd2
        • 2.Sxd2#
        • 2.Sd6#
      • 1...Qd4
        • 2.Sd2#
      • 1...Rd2
        • 2.Sxd2#
        • 2.Sd6#
      • 1...Rd4
        • 2.Sd6#
      • 1...Rd6
        • 2.Sd2#
        • 2.Sxd6#
      • 1...Qb4!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Qxf5#
      • 1...Qxd4
        • 2.Re1#
      • 1...Rxd4
        • 2.Qd5#
      • 1...Rf8
        • 2.Qd5#
      • 1...Sh4
        • 2.Qxe5#
      • 1...Se7
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 12
  • Sets
    • Q(b);N_GUARD::S(F)
    • Q(b);N_GUARD::S(F),XQ(b)
    • Q(b);N_GUARD,XS(G)::S(F)
    • R(i);N_GUARD,XS(G)::S(F)
    • R(i);SBLOCK::QAB1(I),XP(f)
    • R(i);N_GUARD::S(F),XR(i)
    • R(i);N_GUARD::S(F)
    • S(g);N_GUARD,XP(H)::QAR1(I),XS(e)
    • S(g);N_GUARD::QAR1(I),XS(e)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB1(I),XP(f)
      • Vars
        • R(i);N_GUARD::QAB1(I)
        • S(g);N_GUARD::QAR1(I),XS(e)
      • Refutation
        • Q(b);XS(F)
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XP(B)::R(E)+S(F),DCHECK
        • Q(b);N_GUARD,P_SPINQ(b),XS(F)::R(A)
        • R(h);N_GUARD,P_SPINR(h),XS(F)::S(G)
        • Q(b);::S(F)
        • R(i);::S(F)
      • Refutation
        • Q(b);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XP(B)::R(E)+S(F),DCHECK
        • Q(b);N_GUARD,P_SPINQ(b),XS(F)::R(A)
        • Q(b);::S(F)
        • R(i);::S(F)
      • Refutation
        • Q(b);
  • Actual
    • S(F);
    • Threat
      • QAB1(I),XP(f)
    • Vars
      • Q(b);N_GUARD,P_SPINQ(b),XS(G)::R(A)
      • R(i);N_GUARD,P_SPINR(i),XS(G)::QAB1(I)
      • R(i);N_GUARD::QAB1(I)
      • S(g);N_GUARD::QAR1(I),XS(e)
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